./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label40.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/eca-rers2012/Problem03_label40.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 50a84ef689ee1e06fdacd72e7701ff2c38527734cebc573231d698f970fe37fd --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 00:02:47,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 00:02:47,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 00:02:47,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 00:02:47,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 00:02:47,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 00:02:47,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 00:02:47,249 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 00:02:47,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 00:02:47,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 00:02:47,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 00:02:47,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 00:02:47,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 00:02:47,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 00:02:47,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 00:02:47,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 00:02:47,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 00:02:47,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 00:02:47,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 00:02:47,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 00:02:47,276 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 00:02:47,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 00:02:47,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 00:02:47,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 00:02:47,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 00:02:47,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 00:02:47,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 00:02:47,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 00:02:47,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 00:02:47,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 00:02:47,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 00:02:47,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 00:02:47,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 00:02:47,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 00:02:47,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 00:02:47,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 00:02:47,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 00:02:47,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 00:02:47,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 00:02:47,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 00:02:47,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 00:02:47,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 00:02:47,305 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 00:02:47,339 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 00:02:47,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 00:02:47,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 00:02:47,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 00:02:47,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 00:02:47,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 00:02:47,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 00:02:47,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 00:02:47,342 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 00:02:47,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 00:02:47,342 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 00:02:47,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 00:02:47,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 00:02:47,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 00:02:47,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 00:02:47,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 00:02:47,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 00:02:47,344 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 00:02:47,344 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 00:02:47,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 00:02:47,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 00:02:47,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 00:02:47,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 00:02:47,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 00:02:47,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 00:02:47,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 00:02:47,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 00:02:47,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 00:02:47,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 00:02:47,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 00:02:47,347 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 00:02:47,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 00:02:47,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 00:02:47,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50a84ef689ee1e06fdacd72e7701ff2c38527734cebc573231d698f970fe37fd [2022-07-12 00:02:47,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 00:02:47,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 00:02:47,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 00:02:47,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 00:02:47,632 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 00:02:47,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label40.c [2022-07-12 00:02:47,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58d97504e/33d2f49f179a4ccfb290b1c9185342f8/FLAGc2261f808 [2022-07-12 00:02:48,312 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 00:02:48,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label40.c [2022-07-12 00:02:48,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58d97504e/33d2f49f179a4ccfb290b1c9185342f8/FLAGc2261f808 [2022-07-12 00:02:48,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/58d97504e/33d2f49f179a4ccfb290b1c9185342f8 [2022-07-12 00:02:48,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 00:02:48,689 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 00:02:48,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 00:02:48,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 00:02:48,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 00:02:48,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:02:48" (1/1) ... [2022-07-12 00:02:48,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf528b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:48, skipping insertion in model container [2022-07-12 00:02:48,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:02:48" (1/1) ... [2022-07-12 00:02:48,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 00:02:48,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 00:02:49,218 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/eca-rers2012/Problem03_label40.c[59070,59083] [2022-07-12 00:02:49,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 00:02:49,253 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 00:02:49,461 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/eca-rers2012/Problem03_label40.c[59070,59083] [2022-07-12 00:02:49,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 00:02:49,488 INFO L208 MainTranslator]: Completed translation [2022-07-12 00:02:49,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49 WrapperNode [2022-07-12 00:02:49,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 00:02:49,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 00:02:49,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 00:02:49,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 00:02:49,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49" (1/1) ... [2022-07-12 00:02:49,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49" (1/1) ... [2022-07-12 00:02:49,603 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-07-12 00:02:49,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 00:02:49,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 00:02:49,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 00:02:49,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 00:02:49,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49" (1/1) ... [2022-07-12 00:02:49,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49" (1/1) ... [2022-07-12 00:02:49,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49" (1/1) ... [2022-07-12 00:02:49,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49" (1/1) ... [2022-07-12 00:02:49,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49" (1/1) ... [2022-07-12 00:02:49,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49" (1/1) ... [2022-07-12 00:02:49,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49" (1/1) ... [2022-07-12 00:02:49,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 00:02:49,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 00:02:49,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 00:02:49,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 00:02:49,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49" (1/1) ... [2022-07-12 00:02:49,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 00:02:49,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:02:49,736 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 00:02:49,755 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 00:02:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 00:02:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 00:02:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 00:02:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 00:02:49,879 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 00:02:49,896 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 00:02:51,094 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 00:02:51,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 00:02:51,107 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 00:02:51,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:02:51 BoogieIcfgContainer [2022-07-12 00:02:51,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 00:02:51,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 00:02:51,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 00:02:51,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 00:02:51,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:02:48" (1/3) ... [2022-07-12 00:02:51,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ced6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:02:51, skipping insertion in model container [2022-07-12 00:02:51,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:02:49" (2/3) ... [2022-07-12 00:02:51,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ced6b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:02:51, skipping insertion in model container [2022-07-12 00:02:51,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:02:51" (3/3) ... [2022-07-12 00:02:51,117 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label40.c [2022-07-12 00:02:51,128 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 00:02:51,128 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 00:02:51,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 00:02:51,186 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@10b261b3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@74c0ad6c [2022-07-12 00:02:51,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 00:02:51,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 00:02:51,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-12 00:02:51,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:02:51,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:02:51,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:02:51,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:02:51,214 INFO L85 PathProgramCache]: Analyzing trace with hash 359811874, now seen corresponding path program 1 times [2022-07-12 00:02:51,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:02:51,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187622746] [2022-07-12 00:02:51,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:02:51,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:02:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:02:51,753 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 00:02:51,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:02:51,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187622746] [2022-07-12 00:02:51,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187622746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:02:51,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:02:51,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:02:51,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937011066] [2022-07-12 00:02:51,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:02:51,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:02:51,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:02:51,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:02:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:02:51,787 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 00:02:52,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:02:52,618 INFO L93 Difference]: Finished difference Result 855 states and 1496 transitions. [2022-07-12 00:02:52,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:02:52,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 184 [2022-07-12 00:02:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:02:52,644 INFO L225 Difference]: With dead ends: 855 [2022-07-12 00:02:52,644 INFO L226 Difference]: Without dead ends: 460 [2022-07-12 00:02:52,648 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 00:02:52,650 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 112 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 00:02:52,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 176 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 00:02:52,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-12 00:02:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 459. [2022-07-12 00:02:52,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 458 states have (on average 1.5502183406113537) internal successors, (710), 458 states have internal predecessors, (710), 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 00:02:52,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 710 transitions. [2022-07-12 00:02:52,717 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 710 transitions. Word has length 184 [2022-07-12 00:02:52,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:02:52,718 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 710 transitions. [2022-07-12 00:02:52,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 00:02:52,719 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 710 transitions. [2022-07-12 00:02:52,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-12 00:02:52,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:02:52,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:02:52,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 00:02:52,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:02:52,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:02:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash -116317198, now seen corresponding path program 1 times [2022-07-12 00:02:52,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:02:52,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139220944] [2022-07-12 00:02:52,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:02:52,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:02:52,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:02:52,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 00:02:52,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:02:52,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139220944] [2022-07-12 00:02:52,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139220944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:02:52,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:02:52,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:02:52,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824026915] [2022-07-12 00:02:52,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:02:52,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:02:52,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:02:52,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:02:52,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:02:52,838 INFO L87 Difference]: Start difference. First operand 459 states and 710 transitions. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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 00:02:53,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:02:53,518 INFO L93 Difference]: Finished difference Result 1342 states and 2082 transitions. [2022-07-12 00:02:53,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:02:53,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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 189 [2022-07-12 00:02:53,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:02:53,525 INFO L225 Difference]: With dead ends: 1342 [2022-07-12 00:02:53,525 INFO L226 Difference]: Without dead ends: 885 [2022-07-12 00:02:53,527 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 00:02:53,528 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 00:02:53,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 181 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 00:02:53,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-07-12 00:02:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 880. [2022-07-12 00:02:53,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 879 states have (on average 1.4687144482366326) internal successors, (1291), 879 states have internal predecessors, (1291), 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 00:02:53,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1291 transitions. [2022-07-12 00:02:53,564 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1291 transitions. Word has length 189 [2022-07-12 00:02:53,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:02:53,564 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1291 transitions. [2022-07-12 00:02:53,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 2 states have internal predecessors, (189), 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 00:02:53,565 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1291 transitions. [2022-07-12 00:02:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-12 00:02:53,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:02:53,570 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:02:53,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 00:02:53,570 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:02:53,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:02:53,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1976846399, now seen corresponding path program 1 times [2022-07-12 00:02:53,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:02:53,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450509400] [2022-07-12 00:02:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:02:53,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:02:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:02:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 00:02:53,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:02:53,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450509400] [2022-07-12 00:02:53,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450509400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:02:53,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:02:53,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:02:53,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796449621] [2022-07-12 00:02:53,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:02:53,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:02:53,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:02:53,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:02:53,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:02:53,657 INFO L87 Difference]: Start difference. First operand 880 states and 1291 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 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 00:02:54,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:02:54,205 INFO L93 Difference]: Finished difference Result 2594 states and 3822 transitions. [2022-07-12 00:02:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:02:54,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 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 192 [2022-07-12 00:02:54,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:02:54,211 INFO L225 Difference]: With dead ends: 2594 [2022-07-12 00:02:54,211 INFO L226 Difference]: Without dead ends: 1716 [2022-07-12 00:02:54,212 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 00:02:54,213 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:02:54,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:02:54,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-07-12 00:02:54,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1696. [2022-07-12 00:02:54,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1695 states have (on average 1.4395280235988202) internal successors, (2440), 1695 states have internal predecessors, (2440), 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 00:02:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2440 transitions. [2022-07-12 00:02:54,241 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2440 transitions. Word has length 192 [2022-07-12 00:02:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:02:54,242 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2440 transitions. [2022-07-12 00:02:54,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 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 00:02:54,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2440 transitions. [2022-07-12 00:02:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-12 00:02:54,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:02:54,246 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:02:54,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 00:02:54,246 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:02:54,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:02:54,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2013935212, now seen corresponding path program 1 times [2022-07-12 00:02:54,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:02:54,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610216021] [2022-07-12 00:02:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:02:54,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:02:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:02:54,428 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 00:02:54,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:02:54,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610216021] [2022-07-12 00:02:54,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610216021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:02:54,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:02:54,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 00:02:54,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429757627] [2022-07-12 00:02:54,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:02:54,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 00:02:54,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:02:54,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 00:02:54,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:02:54,431 INFO L87 Difference]: Start difference. First operand 1696 states and 2440 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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 00:02:55,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:02:55,063 INFO L93 Difference]: Finished difference Result 3531 states and 5130 transitions. [2022-07-12 00:02:55,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 00:02:55,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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 199 [2022-07-12 00:02:55,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:02:55,069 INFO L225 Difference]: With dead ends: 3531 [2022-07-12 00:02:55,069 INFO L226 Difference]: Without dead ends: 1663 [2022-07-12 00:02:55,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:02:55,072 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 300 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 00:02:55,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 47 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 00:02:55,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2022-07-12 00:02:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1663. [2022-07-12 00:02:55,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1662 states have (on average 1.325511432009627) internal successors, (2203), 1662 states have internal predecessors, (2203), 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 00:02:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2203 transitions. [2022-07-12 00:02:55,095 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2203 transitions. Word has length 199 [2022-07-12 00:02:55,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:02:55,095 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 2203 transitions. [2022-07-12 00:02:55,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 3 states have internal predecessors, (194), 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 00:02:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2203 transitions. [2022-07-12 00:02:55,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-12 00:02:55,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:02:55,099 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:02:55,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 00:02:55,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:02:55,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:02:55,100 INFO L85 PathProgramCache]: Analyzing trace with hash -611089167, now seen corresponding path program 1 times [2022-07-12 00:02:55,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:02:55,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391722575] [2022-07-12 00:02:55,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:02:55,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:02:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:02:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 00:02:55,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:02:55,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391722575] [2022-07-12 00:02:55,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391722575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:02:55,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:02:55,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 00:02:55,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551619861] [2022-07-12 00:02:55,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:02:55,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 00:02:55,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:02:55,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 00:02:55,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:02:55,351 INFO L87 Difference]: Start difference. First operand 1663 states and 2203 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 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 00:02:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:02:56,152 INFO L93 Difference]: Finished difference Result 4323 states and 5743 transitions. [2022-07-12 00:02:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 00:02:56,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 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 215 [2022-07-12 00:02:56,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:02:56,160 INFO L225 Difference]: With dead ends: 4323 [2022-07-12 00:02:56,160 INFO L226 Difference]: Without dead ends: 2488 [2022-07-12 00:02:56,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:02:56,164 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 195 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 00:02:56,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 94 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 00:02:56,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2022-07-12 00:02:56,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2487. [2022-07-12 00:02:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2487 states, 2486 states have (on average 1.3085277554304102) internal successors, (3253), 2486 states have internal predecessors, (3253), 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 00:02:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2487 states to 2487 states and 3253 transitions. [2022-07-12 00:02:56,203 INFO L78 Accepts]: Start accepts. Automaton has 2487 states and 3253 transitions. Word has length 215 [2022-07-12 00:02:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:02:56,204 INFO L495 AbstractCegarLoop]: Abstraction has 2487 states and 3253 transitions. [2022-07-12 00:02:56,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 3 states have internal predecessors, (215), 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 00:02:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2487 states and 3253 transitions. [2022-07-12 00:02:56,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-07-12 00:02:56,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:02:56,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:02:56,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 00:02:56,209 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:02:56,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:02:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1625909836, now seen corresponding path program 1 times [2022-07-12 00:02:56,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:02:56,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633384457] [2022-07-12 00:02:56,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:02:56,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:02:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:02:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 00:02:56,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:02:56,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633384457] [2022-07-12 00:02:56,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633384457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:02:56,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:02:56,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:02:56,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129046230] [2022-07-12 00:02:56,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:02:56,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:02:56,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:02:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:02:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:02:56,269 INFO L87 Difference]: Start difference. First operand 2487 states and 3253 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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 00:02:56,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:02:56,813 INFO L93 Difference]: Finished difference Result 7431 states and 9726 transitions. [2022-07-12 00:02:56,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:02:56,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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 217 [2022-07-12 00:02:56,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:02:56,831 INFO L225 Difference]: With dead ends: 7431 [2022-07-12 00:02:56,832 INFO L226 Difference]: Without dead ends: 4946 [2022-07-12 00:02:56,836 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 00:02:56,839 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 204 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:02:56,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 63 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:02:56,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2022-07-12 00:02:56,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4937. [2022-07-12 00:02:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4937 states, 4936 states have (on average 1.2872771474878444) internal successors, (6354), 4936 states have internal predecessors, (6354), 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 00:02:56,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4937 states to 4937 states and 6354 transitions. [2022-07-12 00:02:56,943 INFO L78 Accepts]: Start accepts. Automaton has 4937 states and 6354 transitions. Word has length 217 [2022-07-12 00:02:56,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:02:56,944 INFO L495 AbstractCegarLoop]: Abstraction has 4937 states and 6354 transitions. [2022-07-12 00:02:56,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 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 00:02:56,944 INFO L276 IsEmpty]: Start isEmpty. Operand 4937 states and 6354 transitions. [2022-07-12 00:02:56,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-07-12 00:02:56,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:02:56,954 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:02:56,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 00:02:56,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:02:56,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:02:56,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1282255010, now seen corresponding path program 1 times [2022-07-12 00:02:56,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:02:56,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793012083] [2022-07-12 00:02:56,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:02:56,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:02:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:02:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 00:02:57,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:02:57,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793012083] [2022-07-12 00:02:57,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793012083] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:02:57,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196513514] [2022-07-12 00:02:57,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:02:57,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:02:57,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:02:57,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 00:02:57,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 00:02:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:02:57,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 00:02:57,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:02:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-12 00:02:57,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:02:57,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196513514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:02:57,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:02:57,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-12 00:02:57,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771116797] [2022-07-12 00:02:57,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:02:57,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:02:57,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:02:57,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:02:57,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:02:57,351 INFO L87 Difference]: Start difference. First operand 4937 states and 6354 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 00:02:57,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:02:57,531 INFO L93 Difference]: Finished difference Result 14805 states and 19056 transitions. [2022-07-12 00:02:57,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:02:57,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 233 [2022-07-12 00:02:57,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:02:57,562 INFO L225 Difference]: With dead ends: 14805 [2022-07-12 00:02:57,562 INFO L226 Difference]: Without dead ends: 9870 [2022-07-12 00:02:57,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:02:57,596 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 268 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 00:02:57,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 507 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 00:02:57,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9870 states. [2022-07-12 00:02:57,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9870 to 9868. [2022-07-12 00:02:57,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9868 states, 9867 states have (on average 1.2839768926725448) internal successors, (12669), 9867 states have internal predecessors, (12669), 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 00:02:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9868 states to 9868 states and 12669 transitions. [2022-07-12 00:02:57,723 INFO L78 Accepts]: Start accepts. Automaton has 9868 states and 12669 transitions. Word has length 233 [2022-07-12 00:02:57,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:02:57,723 INFO L495 AbstractCegarLoop]: Abstraction has 9868 states and 12669 transitions. [2022-07-12 00:02:57,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 2 states have internal predecessors, (221), 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 00:02:57,724 INFO L276 IsEmpty]: Start isEmpty. Operand 9868 states and 12669 transitions. [2022-07-12 00:02:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-12 00:02:57,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:02:57,737 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:02:57,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 00:02:57,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:02:57,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:02:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:02:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1372364853, now seen corresponding path program 1 times [2022-07-12 00:02:57,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:02:57,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566696935] [2022-07-12 00:02:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:02:57,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:02:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:02:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 62 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 00:02:58,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:02:58,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566696935] [2022-07-12 00:02:58,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566696935] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:02:58,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794111366] [2022-07-12 00:02:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:02:58,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:02:58,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:02:58,048 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 00:02:58,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 00:02:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:02:58,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 00:02:58,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:02:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 00:02:58,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:02:58,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794111366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:02:58,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:02:58,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-12 00:02:58,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543083453] [2022-07-12 00:02:58,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:02:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:02:58,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:02:58,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:02:58,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:02:58,394 INFO L87 Difference]: Start difference. First operand 9868 states and 12669 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 00:02:59,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:02:59,027 INFO L93 Difference]: Finished difference Result 24679 states and 31789 transitions. [2022-07-12 00:02:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:02:59,028 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 241 [2022-07-12 00:02:59,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:02:59,064 INFO L225 Difference]: With dead ends: 24679 [2022-07-12 00:02:59,065 INFO L226 Difference]: Without dead ends: 14813 [2022-07-12 00:02:59,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:02:59,080 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 74 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:02:59,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 106 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:02:59,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14813 states. [2022-07-12 00:02:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14813 to 14801. [2022-07-12 00:02:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14801 states, 14800 states have (on average 1.262027027027027) internal successors, (18678), 14800 states have internal predecessors, (18678), 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 00:02:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14801 states to 14801 states and 18678 transitions. [2022-07-12 00:02:59,312 INFO L78 Accepts]: Start accepts. Automaton has 14801 states and 18678 transitions. Word has length 241 [2022-07-12 00:02:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:02:59,313 INFO L495 AbstractCegarLoop]: Abstraction has 14801 states and 18678 transitions. [2022-07-12 00:02:59,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 00:02:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 14801 states and 18678 transitions. [2022-07-12 00:02:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2022-07-12 00:02:59,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:02:59,339 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:02:59,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 00:02:59,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-12 00:02:59,548 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:02:59,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:02:59,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1700715822, now seen corresponding path program 1 times [2022-07-12 00:02:59,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:02:59,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635429072] [2022-07-12 00:02:59,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:02:59,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:02:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:02:59,666 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 00:02:59,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:02:59,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635429072] [2022-07-12 00:02:59,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635429072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:02:59,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:02:59,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:02:59,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313997208] [2022-07-12 00:02:59,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:02:59,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:02:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:02:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:02:59,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:02:59,669 INFO L87 Difference]: Start difference. First operand 14801 states and 18678 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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 00:03:00,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:00,237 INFO L93 Difference]: Finished difference Result 44216 states and 55778 transitions. [2022-07-12 00:03:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:00,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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 244 [2022-07-12 00:03:00,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:00,282 INFO L225 Difference]: With dead ends: 44216 [2022-07-12 00:03:00,282 INFO L226 Difference]: Without dead ends: 29417 [2022-07-12 00:03:00,301 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 00:03:00,304 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 204 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:00,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 127 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 00:03:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29417 states. [2022-07-12 00:03:00,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29417 to 29417. [2022-07-12 00:03:00,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29417 states, 29416 states have (on average 1.1694316018493336) internal successors, (34400), 29416 states have internal predecessors, (34400), 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 00:03:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29417 states to 29417 states and 34400 transitions. [2022-07-12 00:03:00,655 INFO L78 Accepts]: Start accepts. Automaton has 29417 states and 34400 transitions. Word has length 244 [2022-07-12 00:03:00,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:00,655 INFO L495 AbstractCegarLoop]: Abstraction has 29417 states and 34400 transitions. [2022-07-12 00:03:00,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 2 states have internal predecessors, (198), 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 00:03:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 29417 states and 34400 transitions. [2022-07-12 00:03:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-07-12 00:03:00,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:00,682 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:00,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 00:03:00,682 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:00,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:00,682 INFO L85 PathProgramCache]: Analyzing trace with hash 216253889, now seen corresponding path program 1 times [2022-07-12 00:03:00,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:00,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835849726] [2022-07-12 00:03:00,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:00,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 66 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 00:03:00,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:00,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835849726] [2022-07-12 00:03:00,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835849726] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:03:00,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802204528] [2022-07-12 00:03:00,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:00,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:00,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:03:00,748 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 00:03:00,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 00:03:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:00,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 00:03:00,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:03:00,922 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 00:03:00,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:03:00,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802204528] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:00,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:03:00,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-12 00:03:00,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697167744] [2022-07-12 00:03:00,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:00,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:00,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:00,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:00,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:00,924 INFO L87 Difference]: Start difference. First operand 29417 states and 34400 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 00:03:01,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:01,595 INFO L93 Difference]: Finished difference Result 55819 states and 65588 transitions. [2022-07-12 00:03:01,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:01,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 245 [2022-07-12 00:03:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:01,642 INFO L225 Difference]: With dead ends: 55819 [2022-07-12 00:03:01,643 INFO L226 Difference]: Without dead ends: 26404 [2022-07-12 00:03:01,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:01,668 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 191 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:01,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 287 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:03:01,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26404 states. [2022-07-12 00:03:02,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26404 to 26372. [2022-07-12 00:03:02,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26372 states, 26371 states have (on average 1.1672670736794206) internal successors, (30782), 26371 states have internal predecessors, (30782), 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 00:03:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26372 states to 26372 states and 30782 transitions. [2022-07-12 00:03:02,074 INFO L78 Accepts]: Start accepts. Automaton has 26372 states and 30782 transitions. Word has length 245 [2022-07-12 00:03:02,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:02,074 INFO L495 AbstractCegarLoop]: Abstraction has 26372 states and 30782 transitions. [2022-07-12 00:03:02,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 00:03:02,074 INFO L276 IsEmpty]: Start isEmpty. Operand 26372 states and 30782 transitions. [2022-07-12 00:03:02,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-12 00:03:02,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:02,101 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:02,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 00:03:02,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:02,320 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:02,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:02,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1597815934, now seen corresponding path program 1 times [2022-07-12 00:03:02,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:02,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146890908] [2022-07-12 00:03:02,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:02,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 00:03:02,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:02,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146890908] [2022-07-12 00:03:02,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146890908] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:03:02,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478707631] [2022-07-12 00:03:02,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:02,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:02,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:03:02,518 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 00:03:02,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 00:03:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:02,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 00:03:02,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:03:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 00:03:02,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:03:02,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478707631] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:02,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:03:02,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-12 00:03:02,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531985541] [2022-07-12 00:03:02,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:02,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:02,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:02,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:02,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:02,691 INFO L87 Difference]: Start difference. First operand 26372 states and 30782 transitions. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 00:03:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:03,518 INFO L93 Difference]: Finished difference Result 63712 states and 75538 transitions. [2022-07-12 00:03:03,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:03,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 254 [2022-07-12 00:03:03,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:03,584 INFO L225 Difference]: With dead ends: 63712 [2022-07-12 00:03:03,584 INFO L226 Difference]: Without dead ends: 37342 [2022-07-12 00:03:03,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:03,710 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 185 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:03,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 333 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:03:03,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37342 states. [2022-07-12 00:03:04,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37342 to 37334. [2022-07-12 00:03:04,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37334 states, 37333 states have (on average 1.1299922320735007) internal successors, (42186), 37333 states have internal predecessors, (42186), 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 00:03:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37334 states to 37334 states and 42186 transitions. [2022-07-12 00:03:04,249 INFO L78 Accepts]: Start accepts. Automaton has 37334 states and 42186 transitions. Word has length 254 [2022-07-12 00:03:04,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:04,249 INFO L495 AbstractCegarLoop]: Abstraction has 37334 states and 42186 transitions. [2022-07-12 00:03:04,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 00:03:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 37334 states and 42186 transitions. [2022-07-12 00:03:04,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-07-12 00:03:04,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:04,283 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:04,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 00:03:04,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:04,502 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:04,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:04,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1093536924, now seen corresponding path program 1 times [2022-07-12 00:03:04,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:04,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103733533] [2022-07-12 00:03:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:04,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:04,601 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 00:03:04,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:04,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103733533] [2022-07-12 00:03:04,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103733533] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:03:04,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72995450] [2022-07-12 00:03:04,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:04,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:04,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:03:04,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 00:03:04,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 00:03:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:04,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 00:03:04,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:03:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 00:03:04,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:03:04,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72995450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:04,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:03:04,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-12 00:03:04,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860538636] [2022-07-12 00:03:04,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:04,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:04,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:04,839 INFO L87 Difference]: Start difference. First operand 37334 states and 42186 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 00:03:05,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:05,657 INFO L93 Difference]: Finished difference Result 73212 states and 82800 transitions. [2022-07-12 00:03:05,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:05,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 297 [2022-07-12 00:03:05,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:05,719 INFO L225 Difference]: With dead ends: 73212 [2022-07-12 00:03:05,719 INFO L226 Difference]: Without dead ends: 36286 [2022-07-12 00:03:05,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:05,751 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 208 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:05,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 312 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 00:03:05,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36286 states. [2022-07-12 00:03:06,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36286 to 36274. [2022-07-12 00:03:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36274 states, 36273 states have (on average 1.1095029360681499) internal successors, (40245), 36273 states have internal predecessors, (40245), 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 00:03:06,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36274 states to 36274 states and 40245 transitions. [2022-07-12 00:03:06,245 INFO L78 Accepts]: Start accepts. Automaton has 36274 states and 40245 transitions. Word has length 297 [2022-07-12 00:03:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:06,245 INFO L495 AbstractCegarLoop]: Abstraction has 36274 states and 40245 transitions. [2022-07-12 00:03:06,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 00:03:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 36274 states and 40245 transitions. [2022-07-12 00:03:06,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-12 00:03:06,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:06,279 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 00:03:06,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 00:03:06,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 00:03:06,480 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:06,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:06,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1039532014, now seen corresponding path program 1 times [2022-07-12 00:03:06,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:06,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864164351] [2022-07-12 00:03:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:06,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 121 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 00:03:06,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:06,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864164351] [2022-07-12 00:03:06,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864164351] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:03:06,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790494075] [2022-07-12 00:03:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:06,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:06,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:03:06,718 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 00:03:06,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 00:03:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:06,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 00:03:06,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:03:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 00:03:07,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:03:07,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790494075] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:07,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:03:07,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-12 00:03:07,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413894444] [2022-07-12 00:03:07,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:07,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:07,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 00:03:07,033 INFO L87 Difference]: Start difference. First operand 36274 states and 40245 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 00:03:07,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:07,840 INFO L93 Difference]: Finished difference Result 77020 states and 85888 transitions. [2022-07-12 00:03:07,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:07,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 314 [2022-07-12 00:03:07,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:07,899 INFO L225 Difference]: With dead ends: 77020 [2022-07-12 00:03:07,899 INFO L226 Difference]: Without dead ends: 41154 [2022-07-12 00:03:07,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 00:03:07,920 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 79 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:07,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 282 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 00:03:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41154 states. [2022-07-12 00:03:08,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41154 to 41146. [2022-07-12 00:03:08,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41146 states, 41145 states have (on average 1.1140600315955766) internal successors, (45838), 41145 states have internal predecessors, (45838), 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 00:03:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41146 states to 41146 states and 45838 transitions. [2022-07-12 00:03:08,396 INFO L78 Accepts]: Start accepts. Automaton has 41146 states and 45838 transitions. Word has length 314 [2022-07-12 00:03:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:08,396 INFO L495 AbstractCegarLoop]: Abstraction has 41146 states and 45838 transitions. [2022-07-12 00:03:08,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 00:03:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 41146 states and 45838 transitions. [2022-07-12 00:03:08,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-07-12 00:03:08,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:08,433 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 00:03:08,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 00:03:08,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:08,651 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:08,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1562967734, now seen corresponding path program 1 times [2022-07-12 00:03:08,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:08,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831805839] [2022-07-12 00:03:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:08,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2022-07-12 00:03:08,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:08,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831805839] [2022-07-12 00:03:08,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831805839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:08,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:08,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 00:03:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208408668] [2022-07-12 00:03:08,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:08,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:08,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:08,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 00:03:08,825 INFO L87 Difference]: Start difference. First operand 41146 states and 45838 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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 00:03:09,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:09,711 INFO L93 Difference]: Finished difference Result 94721 states and 105590 transitions. [2022-07-12 00:03:09,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:09,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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 384 [2022-07-12 00:03:09,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:09,788 INFO L225 Difference]: With dead ends: 94721 [2022-07-12 00:03:09,788 INFO L226 Difference]: Without dead ends: 53983 [2022-07-12 00:03:09,826 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 00:03:09,827 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 155 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:09,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 126 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 00:03:09,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53983 states. [2022-07-12 00:03:10,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53983 to 49475. [2022-07-12 00:03:10,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49475 states, 49474 states have (on average 1.1135545943323766) internal successors, (55092), 49474 states have internal predecessors, (55092), 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 00:03:10,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49475 states to 49475 states and 55092 transitions. [2022-07-12 00:03:10,729 INFO L78 Accepts]: Start accepts. Automaton has 49475 states and 55092 transitions. Word has length 384 [2022-07-12 00:03:10,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:10,729 INFO L495 AbstractCegarLoop]: Abstraction has 49475 states and 55092 transitions. [2022-07-12 00:03:10,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 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 00:03:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 49475 states and 55092 transitions. [2022-07-12 00:03:10,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-07-12 00:03:10,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:10,766 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 00:03:10,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 00:03:10,766 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:10,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:10,766 INFO L85 PathProgramCache]: Analyzing trace with hash -493270935, now seen corresponding path program 1 times [2022-07-12 00:03:10,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:10,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995443324] [2022-07-12 00:03:10,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:10,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:10,871 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 204 proven. 6 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2022-07-12 00:03:10,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:10,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995443324] [2022-07-12 00:03:10,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995443324] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:03:10,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481022131] [2022-07-12 00:03:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:10,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:10,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:03:10,873 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 00:03:10,874 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 00:03:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:11,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 00:03:11,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:03:11,349 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2022-07-12 00:03:11,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:03:11,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481022131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:11,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:03:11,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-12 00:03:11,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107529559] [2022-07-12 00:03:11,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:11,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:11,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:11,361 INFO L87 Difference]: Start difference. First operand 49475 states and 55092 transitions. Second operand has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 00:03:11,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:11,916 INFO L93 Difference]: Finished difference Result 137642 states and 153225 transitions. [2022-07-12 00:03:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:11,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 414 [2022-07-12 00:03:11,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:12,027 INFO L225 Difference]: With dead ends: 137642 [2022-07-12 00:03:12,027 INFO L226 Difference]: Without dead ends: 88981 [2022-07-12 00:03:12,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:12,072 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 228 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:12,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 497 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 00:03:12,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88981 states. [2022-07-12 00:03:13,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88981 to 88976. [2022-07-12 00:03:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88976 states, 88975 states have (on average 1.111851643720146) internal successors, (98927), 88975 states have internal predecessors, (98927), 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 00:03:13,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88976 states to 88976 states and 98927 transitions. [2022-07-12 00:03:13,441 INFO L78 Accepts]: Start accepts. Automaton has 88976 states and 98927 transitions. Word has length 414 [2022-07-12 00:03:13,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:13,442 INFO L495 AbstractCegarLoop]: Abstraction has 88976 states and 98927 transitions. [2022-07-12 00:03:13,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 00:03:13,442 INFO L276 IsEmpty]: Start isEmpty. Operand 88976 states and 98927 transitions. [2022-07-12 00:03:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-07-12 00:03:13,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:13,509 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:03:13,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 00:03:13,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:13,710 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:13,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1425788597, now seen corresponding path program 1 times [2022-07-12 00:03:13,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:13,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536901855] [2022-07-12 00:03:13,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:13,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 190 proven. 6 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2022-07-12 00:03:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:13,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536901855] [2022-07-12 00:03:13,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536901855] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:03:13,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547267670] [2022-07-12 00:03:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:13,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:13,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:03:13,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 00:03:13,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 00:03:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:14,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 00:03:14,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:03:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-12 00:03:14,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:03:14,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547267670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:14,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:03:14,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-12 00:03:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018350933] [2022-07-12 00:03:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:14,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:14,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:14,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:14,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:14,101 INFO L87 Difference]: Start difference. First operand 88976 states and 98927 transitions. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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 00:03:15,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:15,343 INFO L93 Difference]: Finished difference Result 177153 states and 197026 transitions. [2022-07-12 00:03:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:15,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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 420 [2022-07-12 00:03:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:15,473 INFO L225 Difference]: With dead ends: 177153 [2022-07-12 00:03:15,473 INFO L226 Difference]: Without dead ends: 88991 [2022-07-12 00:03:15,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:15,506 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 159 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:15,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 113 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 00:03:15,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88991 states. [2022-07-12 00:03:16,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88991 to 88976. [2022-07-12 00:03:16,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88976 states, 88975 states have (on average 1.0987693172239392) internal successors, (97763), 88975 states have internal predecessors, (97763), 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 00:03:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88976 states to 88976 states and 97763 transitions. [2022-07-12 00:03:16,643 INFO L78 Accepts]: Start accepts. Automaton has 88976 states and 97763 transitions. Word has length 420 [2022-07-12 00:03:16,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:16,644 INFO L495 AbstractCegarLoop]: Abstraction has 88976 states and 97763 transitions. [2022-07-12 00:03:16,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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 00:03:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 88976 states and 97763 transitions. [2022-07-12 00:03:16,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2022-07-12 00:03:16,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:16,716 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 00:03:16,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-12 00:03:16,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 00:03:16,917 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:16,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:16,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1785867775, now seen corresponding path program 1 times [2022-07-12 00:03:16,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:16,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217503881] [2022-07-12 00:03:16,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:16,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:17,517 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 269 proven. 95 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 00:03:17,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:17,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217503881] [2022-07-12 00:03:17,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217503881] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:03:17,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154584683] [2022-07-12 00:03:17,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:17,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:17,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:03:17,520 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 00:03:17,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 00:03:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:17,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 00:03:17,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:03:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 00:03:17,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:03:17,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154584683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:17,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:03:17,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-12 00:03:17,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267925365] [2022-07-12 00:03:17,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:17,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:17,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:17,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:17,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 00:03:17,785 INFO L87 Difference]: Start difference. First operand 88976 states and 97763 transitions. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 00:03:18,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:18,765 INFO L93 Difference]: Finished difference Result 167122 states and 183334 transitions. [2022-07-12 00:03:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:18,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 423 [2022-07-12 00:03:18,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:18,859 INFO L225 Difference]: With dead ends: 167122 [2022-07-12 00:03:18,860 INFO L226 Difference]: Without dead ends: 78960 [2022-07-12 00:03:18,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 00:03:18,898 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 132 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:18,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 303 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 00:03:18,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78960 states. [2022-07-12 00:03:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78960 to 75911. [2022-07-12 00:03:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75911 states, 75910 states have (on average 1.0786325912264523) internal successors, (81879), 75910 states have internal predecessors, (81879), 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 00:03:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75911 states to 75911 states and 81879 transitions. [2022-07-12 00:03:19,925 INFO L78 Accepts]: Start accepts. Automaton has 75911 states and 81879 transitions. Word has length 423 [2022-07-12 00:03:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:19,926 INFO L495 AbstractCegarLoop]: Abstraction has 75911 states and 81879 transitions. [2022-07-12 00:03:19,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 00:03:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 75911 states and 81879 transitions. [2022-07-12 00:03:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-07-12 00:03:19,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:19,995 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 00:03:20,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 00:03:20,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 00:03:20,196 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:20,197 INFO L85 PathProgramCache]: Analyzing trace with hash 787184307, now seen corresponding path program 1 times [2022-07-12 00:03:20,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:20,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976601860] [2022-07-12 00:03:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:20,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:20,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:20,322 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-12 00:03:20,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:20,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976601860] [2022-07-12 00:03:20,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976601860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:20,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:20,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 00:03:20,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76206170] [2022-07-12 00:03:20,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:20,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 00:03:20,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:20,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 00:03:20,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:03:20,325 INFO L87 Difference]: Start difference. First operand 75911 states and 81879 transitions. Second operand has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 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 00:03:21,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:21,749 INFO L93 Difference]: Finished difference Result 158997 states and 171829 transitions. [2022-07-12 00:03:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 00:03:21,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 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 429 [2022-07-12 00:03:21,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:21,852 INFO L225 Difference]: With dead ends: 158997 [2022-07-12 00:03:21,853 INFO L226 Difference]: Without dead ends: 84103 [2022-07-12 00:03:21,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:03:21,898 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 341 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:21,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 110 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 00:03:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84103 states. [2022-07-12 00:03:22,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84103 to 84063. [2022-07-12 00:03:22,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84063 states, 84062 states have (on average 1.0770859603625895) internal successors, (90542), 84062 states have internal predecessors, (90542), 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 00:03:23,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84063 states to 84063 states and 90542 transitions. [2022-07-12 00:03:23,102 INFO L78 Accepts]: Start accepts. Automaton has 84063 states and 90542 transitions. Word has length 429 [2022-07-12 00:03:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:23,102 INFO L495 AbstractCegarLoop]: Abstraction has 84063 states and 90542 transitions. [2022-07-12 00:03:23,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.0) internal successors, (288), 3 states have internal predecessors, (288), 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 00:03:23,102 INFO L276 IsEmpty]: Start isEmpty. Operand 84063 states and 90542 transitions. [2022-07-12 00:03:23,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-07-12 00:03:23,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:23,168 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 00:03:23,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 00:03:23,168 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:23,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:23,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1288204574, now seen corresponding path program 1 times [2022-07-12 00:03:23,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:23,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983446214] [2022-07-12 00:03:23,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:23,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 311 proven. 29 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-12 00:03:23,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:23,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983446214] [2022-07-12 00:03:23,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983446214] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 00:03:23,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034200576] [2022-07-12 00:03:23,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:23,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:23,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 00:03:23,289 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 00:03:23,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 00:03:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:23,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 00:03:23,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 00:03:23,486 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-12 00:03:23,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 00:03:23,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034200576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:23,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 00:03:23,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-12 00:03:23,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482703621] [2022-07-12 00:03:23,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:23,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 00:03:23,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:23,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 00:03:23,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:23,488 INFO L87 Difference]: Start difference. First operand 84063 states and 90542 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 00:03:24,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:24,465 INFO L93 Difference]: Finished difference Result 159995 states and 172351 transitions. [2022-07-12 00:03:24,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 00:03:24,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 453 [2022-07-12 00:03:24,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:24,555 INFO L225 Difference]: With dead ends: 159995 [2022-07-12 00:03:24,555 INFO L226 Difference]: Without dead ends: 76949 [2022-07-12 00:03:24,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 00:03:24,586 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 209 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:24,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 295 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 00:03:24,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76949 states. [2022-07-12 00:03:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76949 to 70843. [2022-07-12 00:03:25,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70843 states, 70842 states have (on average 1.0643403630614607) internal successors, (75400), 70842 states have internal predecessors, (75400), 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 00:03:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70843 states to 70843 states and 75400 transitions. [2022-07-12 00:03:25,640 INFO L78 Accepts]: Start accepts. Automaton has 70843 states and 75400 transitions. Word has length 453 [2022-07-12 00:03:25,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:25,641 INFO L495 AbstractCegarLoop]: Abstraction has 70843 states and 75400 transitions. [2022-07-12 00:03:25,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 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 00:03:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 70843 states and 75400 transitions. [2022-07-12 00:03:25,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2022-07-12 00:03:25,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:25,703 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 00:03:25,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 00:03:25,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 00:03:25,909 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:25,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:25,909 INFO L85 PathProgramCache]: Analyzing trace with hash 236642471, now seen corresponding path program 1 times [2022-07-12 00:03:25,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:25,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108712434] [2022-07-12 00:03:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:25,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-12 00:03:26,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:26,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108712434] [2022-07-12 00:03:26,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108712434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:26,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:26,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 00:03:26,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975331937] [2022-07-12 00:03:26,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:26,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 00:03:26,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 00:03:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:03:26,088 INFO L87 Difference]: Start difference. First operand 70843 states and 75400 transitions. Second operand has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 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 00:03:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:27,486 INFO L93 Difference]: Finished difference Result 198448 states and 211001 transitions. [2022-07-12 00:03:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 00:03:27,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 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 473 [2022-07-12 00:03:27,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:27,625 INFO L225 Difference]: With dead ends: 198448 [2022-07-12 00:03:27,626 INFO L226 Difference]: Without dead ends: 128622 [2022-07-12 00:03:27,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:03:27,652 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 313 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:27,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 431 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 00:03:27,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128622 states. [2022-07-12 00:03:28,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128622 to 122108. [2022-07-12 00:03:29,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122108 states, 122107 states have (on average 1.0633051340218005) internal successors, (129837), 122107 states have internal predecessors, (129837), 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 00:03:29,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122108 states to 122108 states and 129837 transitions. [2022-07-12 00:03:29,456 INFO L78 Accepts]: Start accepts. Automaton has 122108 states and 129837 transitions. Word has length 473 [2022-07-12 00:03:29,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:29,456 INFO L495 AbstractCegarLoop]: Abstraction has 122108 states and 129837 transitions. [2022-07-12 00:03:29,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.25) internal successors, (413), 3 states have internal predecessors, (413), 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 00:03:29,457 INFO L276 IsEmpty]: Start isEmpty. Operand 122108 states and 129837 transitions. [2022-07-12 00:03:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-07-12 00:03:29,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 00:03:29,533 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 00:03:29,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 00:03:29,534 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 00:03:29,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 00:03:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash 65683284, now seen corresponding path program 1 times [2022-07-12 00:03:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 00:03:29,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749335285] [2022-07-12 00:03:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 00:03:29,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 00:03:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 00:03:29,775 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 570 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-12 00:03:29,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 00:03:29,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749335285] [2022-07-12 00:03:29,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749335285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 00:03:29,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 00:03:29,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 00:03:29,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154158743] [2022-07-12 00:03:29,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 00:03:29,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 00:03:29,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 00:03:29,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 00:03:29,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:03:29,777 INFO L87 Difference]: Start difference. First operand 122108 states and 129837 transitions. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 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 00:03:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 00:03:31,591 INFO L93 Difference]: Finished difference Result 273746 states and 291742 transitions. [2022-07-12 00:03:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 00:03:31,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 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 505 [2022-07-12 00:03:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 00:03:31,593 INFO L225 Difference]: With dead ends: 273746 [2022-07-12 00:03:31,593 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 00:03:31,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-12 00:03:31,646 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 302 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 00:03:31,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 100 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 00:03:31,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 00:03:31,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 00:03:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 00:03:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 00:03:31,647 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 505 [2022-07-12 00:03:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 00:03:31,647 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 00:03:31,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 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 00:03:31,647 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 00:03:31,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 00:03:31,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 00:03:31,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 00:03:31,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.