./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_label05.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 9eb211dff2d7d24fbef4856e0a2f1ba2134136f04d84e12518dc8b67ba1dd611 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:45:50,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:45:50,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:45:50,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:45:50,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:45:50,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:45:50,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:45:50,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:45:50,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:45:50,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:45:50,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:45:50,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:45:50,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:45:50,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:45:50,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:45:50,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:45:50,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:45:50,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:45:50,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:45:50,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:45:50,410 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:45:50,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:45:50,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:45:50,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:45:50,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:45:50,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:45:50,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:45:50,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:45:50,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:45:50,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:45:50,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:45:50,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:45:50,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:45:50,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:45:50,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:45:50,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:45:50,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:45:50,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:45:50,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:45:50,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:45:50,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:45:50,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:45:50,420 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:45:50,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:45:50,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:45:50,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:45:50,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:45:50,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:45:50,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:45:50,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:45:50,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:45:50,436 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:45:50,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:45:50,437 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:45:50,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:45:50,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:45:50,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:45:50,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:45:50,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:45:50,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:45:50,438 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:45:50,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:45:50,438 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:45:50,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:45:50,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:45:50,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:45:50,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:45:50,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:45:50,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:45:50,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:45:50,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:45:50,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:45:50,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:45:50,440 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:45:50,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:45:50,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:45:50,440 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb211dff2d7d24fbef4856e0a2f1ba2134136f04d84e12518dc8b67ba1dd611 [2022-07-13 11:45:50,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:45:50,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:45:50,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:45:50,635 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:45:50,635 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:45:50,636 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label05.c [2022-07-13 11:45:50,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763b8654e/751f99ac840a4d9ca453020a0a648730/FLAG1a8158112 [2022-07-13 11:45:51,157 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:45:51,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label05.c [2022-07-13 11:45:51,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763b8654e/751f99ac840a4d9ca453020a0a648730/FLAG1a8158112 [2022-07-13 11:45:51,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/763b8654e/751f99ac840a4d9ca453020a0a648730 [2022-07-13 11:45:51,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:45:51,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:45:51,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:45:51,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:45:51,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:45:51,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:51,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588d2e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51, skipping insertion in model container [2022-07-13 11:45:51,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:51,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:45:51,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:45:51,637 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_label05.c[55544,55557] [2022-07-13 11:45:51,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:45:51,672 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:45:51,870 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_label05.c[55544,55557] [2022-07-13 11:45:51,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:45:51,892 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:45:51,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51 WrapperNode [2022-07-13 11:45:51,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:45:51,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:45:51,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:45:51,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:45:51,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:51,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:51,993 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-07-13 11:45:51,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:45:51,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:45:51,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:45:51,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:45:52,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:52,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:52,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:52,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:52,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:52,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:52,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:52,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:45:52,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:45:52,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:45:52,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:45:52,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51" (1/1) ... [2022-07-13 11:45:52,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:45:52,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:45:52,106 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) [2022-07-13 11:45:52,112 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 [2022-07-13 11:45:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:45:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:45:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:45:52,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:45:52,197 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:45:52,199 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:45:53,241 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:45:53,253 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:45:53,253 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 11:45:53,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:45:53 BoogieIcfgContainer [2022-07-13 11:45:53,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:45:53,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:45:53,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:45:53,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:45:53,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:45:51" (1/3) ... [2022-07-13 11:45:53,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c5a569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:45:53, skipping insertion in model container [2022-07-13 11:45:53,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:45:51" (2/3) ... [2022-07-13 11:45:53,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c5a569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:45:53, skipping insertion in model container [2022-07-13 11:45:53,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:45:53" (3/3) ... [2022-07-13 11:45:53,263 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label05.c [2022-07-13 11:45:53,273 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:45:53,273 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:45:53,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:45:53,330 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@c84e96c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@23201a18 [2022-07-13 11:45:53,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:45:53,335 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) [2022-07-13 11:45:53,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-13 11:45:53,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:45:53,348 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] [2022-07-13 11:45:53,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:45:53,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:45:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash -684231142, now seen corresponding path program 1 times [2022-07-13 11:45:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:45:53,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665553537] [2022-07-13 11:45:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:45:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:45:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:45:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:45:53,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:45:53,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665553537] [2022-07-13 11:45:53,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665553537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:45:53,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:45:53,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:45:53,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415778630] [2022-07-13 11:45:53,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:45:53,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:45:53,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:45:53,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:45:53,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:45:53,759 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 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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) [2022-07-13 11:45:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:45:54,595 INFO L93 Difference]: Finished difference Result 829 states and 1478 transitions. [2022-07-13 11:45:54,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:45:54,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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 158 [2022-07-13 11:45:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:45:54,613 INFO L225 Difference]: With dead ends: 829 [2022-07-13 11:45:54,614 INFO L226 Difference]: Without dead ends: 463 [2022-07-13 11:45:54,619 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 [2022-07-13 11:45:54,621 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:45:54,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 127 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:45:54,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-13 11:45:54,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2022-07-13 11:45:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.6183035714285714) internal successors, (725), 448 states have internal predecessors, (725), 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) [2022-07-13 11:45:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 725 transitions. [2022-07-13 11:45:54,683 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 725 transitions. Word has length 158 [2022-07-13 11:45:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:45:54,685 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 725 transitions. [2022-07-13 11:45:54,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 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) [2022-07-13 11:45:54,686 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 725 transitions. [2022-07-13 11:45:54,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 11:45:54,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:45:54,693 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] [2022-07-13 11:45:54,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:45:54,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:45:54,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:45:54,694 INFO L85 PathProgramCache]: Analyzing trace with hash -905202966, now seen corresponding path program 1 times [2022-07-13 11:45:54,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:45:54,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706976228] [2022-07-13 11:45:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:45:54,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:45:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:45:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:45:54,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:45:54,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706976228] [2022-07-13 11:45:54,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706976228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:45:54,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:45:54,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:45:54,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745643634] [2022-07-13 11:45:54,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:45:54,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:45:54,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:45:54,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:45:54,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:45:54,799 INFO L87 Difference]: Start difference. First operand 449 states and 725 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 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) [2022-07-13 11:45:55,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:45:55,567 INFO L93 Difference]: Finished difference Result 1319 states and 2138 transitions. [2022-07-13 11:45:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:45:55,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 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 163 [2022-07-13 11:45:55,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:45:55,570 INFO L225 Difference]: With dead ends: 1319 [2022-07-13 11:45:55,570 INFO L226 Difference]: Without dead ends: 872 [2022-07-13 11:45:55,571 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 [2022-07-13 11:45:55,571 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:45:55,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 150 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:45:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-07-13 11:45:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 870. [2022-07-13 11:45:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 869 states have (on average 1.5120828538550057) internal successors, (1314), 869 states have internal predecessors, (1314), 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) [2022-07-13 11:45:55,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1314 transitions. [2022-07-13 11:45:55,587 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1314 transitions. Word has length 163 [2022-07-13 11:45:55,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:45:55,587 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1314 transitions. [2022-07-13 11:45:55,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 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) [2022-07-13 11:45:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1314 transitions. [2022-07-13 11:45:55,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-13 11:45:55,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:45:55,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-07-13 11:45:55,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:45:55,611 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:45:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:45:55,611 INFO L85 PathProgramCache]: Analyzing trace with hash -978055840, now seen corresponding path program 1 times [2022-07-13 11:45:55,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:45:55,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671625380] [2022-07-13 11:45:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:45:55,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:45:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:45:55,687 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 11:45:55,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:45:55,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671625380] [2022-07-13 11:45:55,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671625380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:45:55,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:45:55,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:45:55,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614136456] [2022-07-13 11:45:55,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:45:55,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:45:55,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:45:55,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:45:55,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:45:55,692 INFO L87 Difference]: Start difference. First operand 870 states and 1314 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2022-07-13 11:45:56,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:45:56,269 INFO L93 Difference]: Finished difference Result 2554 states and 3869 transitions. [2022-07-13 11:45:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:45:56,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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 178 [2022-07-13 11:45:56,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:45:56,274 INFO L225 Difference]: With dead ends: 2554 [2022-07-13 11:45:56,274 INFO L226 Difference]: Without dead ends: 1686 [2022-07-13 11:45:56,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:45:56,276 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 233 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:45:56,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 416 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:45:56,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2022-07-13 11:45:56,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1684. [2022-07-13 11:45:56,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 1.3368983957219251) internal successors, (2250), 1683 states have internal predecessors, (2250), 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) [2022-07-13 11:45:56,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2250 transitions. [2022-07-13 11:45:56,311 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2250 transitions. Word has length 178 [2022-07-13 11:45:56,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:45:56,312 INFO L495 AbstractCegarLoop]: Abstraction has 1684 states and 2250 transitions. [2022-07-13 11:45:56,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 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) [2022-07-13 11:45:56,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2250 transitions. [2022-07-13 11:45:56,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-13 11:45:56,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:45:56,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:45:56,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:45:56,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:45:56,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:45:56,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1440789059, now seen corresponding path program 1 times [2022-07-13 11:45:56,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:45:56,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699852667] [2022-07-13 11:45:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:45:56,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:45:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:45:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:45:56,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:45:56,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699852667] [2022-07-13 11:45:56,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699852667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:45:56,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:45:56,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:45:56,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546372168] [2022-07-13 11:45:56,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:45:56,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:45:56,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:45:56,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:45:56,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:45:56,429 INFO L87 Difference]: Start difference. First operand 1684 states and 2250 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 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) [2022-07-13 11:45:56,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:45:56,963 INFO L93 Difference]: Finished difference Result 5017 states and 6710 transitions. [2022-07-13 11:45:56,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:45:56,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 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 181 [2022-07-13 11:45:56,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:45:56,973 INFO L225 Difference]: With dead ends: 5017 [2022-07-13 11:45:56,973 INFO L226 Difference]: Without dead ends: 3335 [2022-07-13 11:45:56,975 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 [2022-07-13 11:45:56,978 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 259 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:45:56,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 123 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:45:56,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2022-07-13 11:45:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 3326. [2022-07-13 11:45:57,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3326 states, 3325 states have (on average 1.323609022556391) internal successors, (4401), 3325 states have internal predecessors, (4401), 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) [2022-07-13 11:45:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4401 transitions. [2022-07-13 11:45:57,022 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4401 transitions. Word has length 181 [2022-07-13 11:45:57,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:45:57,023 INFO L495 AbstractCegarLoop]: Abstraction has 3326 states and 4401 transitions. [2022-07-13 11:45:57,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 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) [2022-07-13 11:45:57,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4401 transitions. [2022-07-13 11:45:57,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-13 11:45:57,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:45:57,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:45:57,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:45:57,028 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:45:57,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:45:57,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1514789083, now seen corresponding path program 1 times [2022-07-13 11:45:57,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:45:57,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752707147] [2022-07-13 11:45:57,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:45:57,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:45:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:45:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:45:57,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:45:57,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752707147] [2022-07-13 11:45:57,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752707147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:45:57,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:45:57,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:45:57,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829631929] [2022-07-13 11:45:57,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:45:57,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:45:57,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:45:57,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:45:57,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:45:57,109 INFO L87 Difference]: Start difference. First operand 3326 states and 4401 transitions. 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) [2022-07-13 11:45:57,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:45:57,641 INFO L93 Difference]: Finished difference Result 9926 states and 13150 transitions. [2022-07-13 11:45:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:45:57,642 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 [2022-07-13 11:45:57,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:45:57,659 INFO L225 Difference]: With dead ends: 9926 [2022-07-13 11:45:57,659 INFO L226 Difference]: Without dead ends: 6602 [2022-07-13 11:45:57,665 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 [2022-07-13 11:45:57,671 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 217 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:45:57,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 168 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:45:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2022-07-13 11:45:57,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 5768. [2022-07-13 11:45:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 1.3370903415987516) internal successors, (7711), 5767 states have internal predecessors, (7711), 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) [2022-07-13 11:45:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 7711 transitions. [2022-07-13 11:45:57,757 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 7711 transitions. Word has length 184 [2022-07-13 11:45:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:45:57,758 INFO L495 AbstractCegarLoop]: Abstraction has 5768 states and 7711 transitions. [2022-07-13 11:45:57,758 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) [2022-07-13 11:45:57,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 7711 transitions. [2022-07-13 11:45:57,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-13 11:45:57,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:45:57,767 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, 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] [2022-07-13 11:45:57,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:45:57,768 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:45:57,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:45:57,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1547304649, now seen corresponding path program 1 times [2022-07-13 11:45:57,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:45:57,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144486039] [2022-07-13 11:45:57,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:45:57,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:45:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:45:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 11:45:57,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:45:57,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144486039] [2022-07-13 11:45:57,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144486039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:45:57,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:45:57,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:45:57,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288390673] [2022-07-13 11:45:57,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:45:57,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:45:57,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:45:57,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:45:57,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:45:57,851 INFO L87 Difference]: Start difference. First operand 5768 states and 7711 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) [2022-07-13 11:45:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:45:58,475 INFO L93 Difference]: Finished difference Result 15634 states and 21105 transitions. [2022-07-13 11:45:58,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:45:58,475 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 193 [2022-07-13 11:45:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:45:58,502 INFO L225 Difference]: With dead ends: 15634 [2022-07-13 11:45:58,502 INFO L226 Difference]: Without dead ends: 9868 [2022-07-13 11:45:58,510 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 [2022-07-13 11:45:58,512 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 211 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:45:58,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 188 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 739 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:45:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9868 states. [2022-07-13 11:45:58,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9868 to 9643. [2022-07-13 11:45:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9643 states, 9642 states have (on average 1.3566687409251192) internal successors, (13081), 9642 states have internal predecessors, (13081), 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) [2022-07-13 11:45:58,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9643 states to 9643 states and 13081 transitions. [2022-07-13 11:45:58,655 INFO L78 Accepts]: Start accepts. Automaton has 9643 states and 13081 transitions. Word has length 193 [2022-07-13 11:45:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:45:58,656 INFO L495 AbstractCegarLoop]: Abstraction has 9643 states and 13081 transitions. [2022-07-13 11:45:58,656 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) [2022-07-13 11:45:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 9643 states and 13081 transitions. [2022-07-13 11:45:58,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-13 11:45:58,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:45:58,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:45:58,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:45:58,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:45:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:45:58,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1251266014, now seen corresponding path program 1 times [2022-07-13 11:45:58,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:45:58,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623595616] [2022-07-13 11:45:58,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:45:58,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:45:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:45:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:45:58,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:45:58,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623595616] [2022-07-13 11:45:58,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623595616] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:45:58,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517487170] [2022-07-13 11:45:58,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:45:58,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:45:58,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:45:58,773 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) [2022-07-13 11:45:58,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:45:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:45:58,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 11:45:58,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:45:59,090 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 11:45:59,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:45:59,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517487170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:45:59,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:45:59,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:45:59,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797367263] [2022-07-13 11:45:59,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:45:59,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:45:59,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:45:59,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:45:59,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:45:59,092 INFO L87 Difference]: Start difference. First operand 9643 states and 13081 transitions. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2022-07-13 11:45:59,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:45:59,750 INFO L93 Difference]: Finished difference Result 24980 states and 34055 transitions. [2022-07-13 11:45:59,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:45:59,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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 196 [2022-07-13 11:45:59,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:45:59,843 INFO L225 Difference]: With dead ends: 24980 [2022-07-13 11:45:59,843 INFO L226 Difference]: Without dead ends: 15746 [2022-07-13 11:45:59,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:45:59,850 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 85 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:45:59,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 426 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:45:59,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15746 states. [2022-07-13 11:45:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15746 to 15736. [2022-07-13 11:46:00,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15736 states, 15735 states have (on average 1.3225929456625358) internal successors, (20811), 15735 states have internal predecessors, (20811), 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) [2022-07-13 11:46:00,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15736 states to 15736 states and 20811 transitions. [2022-07-13 11:46:00,040 INFO L78 Accepts]: Start accepts. Automaton has 15736 states and 20811 transitions. Word has length 196 [2022-07-13 11:46:00,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:00,040 INFO L495 AbstractCegarLoop]: Abstraction has 15736 states and 20811 transitions. [2022-07-13 11:46:00,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 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) [2022-07-13 11:46:00,041 INFO L276 IsEmpty]: Start isEmpty. Operand 15736 states and 20811 transitions. [2022-07-13 11:46:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-07-13 11:46:00,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:00,055 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 11:46:00,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 11:46:00,269 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 [2022-07-13 11:46:00,270 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:00,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:00,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1106590446, now seen corresponding path program 1 times [2022-07-13 11:46:00,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:00,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759725126] [2022-07-13 11:46:00,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:00,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:00,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 11:46:00,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:00,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759725126] [2022-07-13 11:46:00,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759725126] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:00,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:00,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:00,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234271118] [2022-07-13 11:46:00,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:00,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:00,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:00,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:00,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:00,325 INFO L87 Difference]: Start difference. First operand 15736 states and 20811 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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) [2022-07-13 11:46:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:01,000 INFO L93 Difference]: Finished difference Result 35949 states and 47615 transitions. [2022-07-13 11:46:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:01,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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 203 [2022-07-13 11:46:01,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:01,032 INFO L225 Difference]: With dead ends: 35949 [2022-07-13 11:46:01,032 INFO L226 Difference]: Without dead ends: 20215 [2022-07-13 11:46:01,048 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 [2022-07-13 11:46:01,048 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 204 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:01,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 173 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:46:01,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20215 states. [2022-07-13 11:46:01,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20215 to 20202. [2022-07-13 11:46:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20202 states, 20201 states have (on average 1.3050839067372901) internal successors, (26364), 20201 states have internal predecessors, (26364), 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) [2022-07-13 11:46:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20202 states to 20202 states and 26364 transitions. [2022-07-13 11:46:01,389 INFO L78 Accepts]: Start accepts. Automaton has 20202 states and 26364 transitions. Word has length 203 [2022-07-13 11:46:01,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:01,390 INFO L495 AbstractCegarLoop]: Abstraction has 20202 states and 26364 transitions. [2022-07-13 11:46:01,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 2 states have internal predecessors, (178), 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) [2022-07-13 11:46:01,390 INFO L276 IsEmpty]: Start isEmpty. Operand 20202 states and 26364 transitions. [2022-07-13 11:46:01,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-13 11:46:01,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:01,407 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:01,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:46:01,408 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:01,408 INFO L85 PathProgramCache]: Analyzing trace with hash -738194101, now seen corresponding path program 1 times [2022-07-13 11:46:01,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:01,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355937509] [2022-07-13 11:46:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:01,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:01,480 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 11:46:01,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:01,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355937509] [2022-07-13 11:46:01,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355937509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:01,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:01,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:01,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589789606] [2022-07-13 11:46:01,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:01,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:01,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:01,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:01,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:01,483 INFO L87 Difference]: Start difference. First operand 20202 states and 26364 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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) [2022-07-13 11:46:02,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:02,323 INFO L93 Difference]: Finished difference Result 42037 states and 54660 transitions. [2022-07-13 11:46:02,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:02,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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 206 [2022-07-13 11:46:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:02,356 INFO L225 Difference]: With dead ends: 42037 [2022-07-13 11:46:02,356 INFO L226 Difference]: Without dead ends: 22447 [2022-07-13 11:46:02,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:02,377 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 202 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:02,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 423 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22447 states. [2022-07-13 11:46:02,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22447 to 22443. [2022-07-13 11:46:02,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22443 states, 22442 states have (on average 1.2857588450227253) internal successors, (28855), 22442 states have internal predecessors, (28855), 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) [2022-07-13 11:46:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22443 states to 22443 states and 28855 transitions. [2022-07-13 11:46:02,718 INFO L78 Accepts]: Start accepts. Automaton has 22443 states and 28855 transitions. Word has length 206 [2022-07-13 11:46:02,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:02,718 INFO L495 AbstractCegarLoop]: Abstraction has 22443 states and 28855 transitions. [2022-07-13 11:46:02,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 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) [2022-07-13 11:46:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 22443 states and 28855 transitions. [2022-07-13 11:46:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-13 11:46:02,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:02,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:02,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:46:02,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:02,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1401225849, now seen corresponding path program 1 times [2022-07-13 11:46:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:02,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429142028] [2022-07-13 11:46:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:02,824 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 11:46:02,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:02,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429142028] [2022-07-13 11:46:02,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429142028] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:02,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883833217] [2022-07-13 11:46:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:02,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:02,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:02,844 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) [2022-07-13 11:46:02,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:46:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:02,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:46:02,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 11:46:03,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:46:03,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883833217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:03,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:46:03,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-13 11:46:03,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487385965] [2022-07-13 11:46:03,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:03,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:03,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:03,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:03,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:03,050 INFO L87 Difference]: Start difference. First operand 22443 states and 28855 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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) [2022-07-13 11:46:03,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:03,914 INFO L93 Difference]: Finished difference Result 58313 states and 75048 transitions. [2022-07-13 11:46:03,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:03,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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 210 [2022-07-13 11:46:03,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:03,963 INFO L225 Difference]: With dead ends: 58313 [2022-07-13 11:46:03,963 INFO L226 Difference]: Without dead ends: 36075 [2022-07-13 11:46:03,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:03,985 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 233 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:03,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 161 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:04,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36075 states. [2022-07-13 11:46:04,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36075 to 34853. [2022-07-13 11:46:04,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34853 states, 34852 states have (on average 1.2593251463330655) internal successors, (43890), 34852 states have internal predecessors, (43890), 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) [2022-07-13 11:46:04,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34853 states to 34853 states and 43890 transitions. [2022-07-13 11:46:04,638 INFO L78 Accepts]: Start accepts. Automaton has 34853 states and 43890 transitions. Word has length 210 [2022-07-13 11:46:04,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:04,639 INFO L495 AbstractCegarLoop]: Abstraction has 34853 states and 43890 transitions. [2022-07-13 11:46:04,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 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) [2022-07-13 11:46:04,639 INFO L276 IsEmpty]: Start isEmpty. Operand 34853 states and 43890 transitions. [2022-07-13 11:46:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-07-13 11:46:04,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:04,682 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:04,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 11:46:04,901 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,SelfDestructingSolverStorable9 [2022-07-13 11:46:04,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:04,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:04,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1620299160, now seen corresponding path program 1 times [2022-07-13 11:46:04,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:04,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922414085] [2022-07-13 11:46:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:04,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 11:46:05,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:05,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922414085] [2022-07-13 11:46:05,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922414085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:05,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:05,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:05,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152709929] [2022-07-13 11:46:05,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:05,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:05,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:05,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:05,077 INFO L87 Difference]: Start difference. First operand 34853 states and 43890 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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) [2022-07-13 11:46:05,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:05,882 INFO L93 Difference]: Finished difference Result 76644 states and 96209 transitions. [2022-07-13 11:46:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:05,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 218 [2022-07-13 11:46:05,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:05,933 INFO L225 Difference]: With dead ends: 76644 [2022-07-13 11:46:05,933 INFO L226 Difference]: Without dead ends: 42606 [2022-07-13 11:46:05,958 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 [2022-07-13 11:46:05,959 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 197 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:05,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 202 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:46:05,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42606 states. [2022-07-13 11:46:06,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42606 to 42592. [2022-07-13 11:46:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42592 states, 42591 states have (on average 1.244770021835599) internal successors, (53016), 42591 states have internal predecessors, (53016), 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) [2022-07-13 11:46:06,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42592 states to 42592 states and 53016 transitions. [2022-07-13 11:46:06,493 INFO L78 Accepts]: Start accepts. Automaton has 42592 states and 53016 transitions. Word has length 218 [2022-07-13 11:46:06,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:06,494 INFO L495 AbstractCegarLoop]: Abstraction has 42592 states and 53016 transitions. [2022-07-13 11:46:06,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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) [2022-07-13 11:46:06,494 INFO L276 IsEmpty]: Start isEmpty. Operand 42592 states and 53016 transitions. [2022-07-13 11:46:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-13 11:46:06,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:06,518 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, 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] [2022-07-13 11:46:06,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:46:06,518 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:06,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:06,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1000932221, now seen corresponding path program 1 times [2022-07-13 11:46:06,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:06,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613341452] [2022-07-13 11:46:06,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:06,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:06,592 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 72 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 11:46:06,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:06,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613341452] [2022-07-13 11:46:06,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613341452] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:06,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451697158] [2022-07-13 11:46:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:06,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:06,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:06,594 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) [2022-07-13 11:46:06,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 11:46:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:06,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:46:06,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 11:46:06,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:46:06,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451697158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:06,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:46:06,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:46:06,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31090262] [2022-07-13 11:46:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:06,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:06,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:06,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:06,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:06,960 INFO L87 Difference]: Start difference. First operand 42592 states and 53016 transitions. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2022-07-13 11:46:07,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:07,794 INFO L93 Difference]: Finished difference Result 100206 states and 126850 transitions. [2022-07-13 11:46:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:07,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 225 [2022-07-13 11:46:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:07,873 INFO L225 Difference]: With dead ends: 100206 [2022-07-13 11:46:07,873 INFO L226 Difference]: Without dead ends: 58429 [2022-07-13 11:46:07,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:07,905 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 225 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:07,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 171 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:46:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58429 states. [2022-07-13 11:46:08,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58429 to 58020. [2022-07-13 11:46:08,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58020 states, 58019 states have (on average 1.2054499388131474) internal successors, (69939), 58019 states have internal predecessors, (69939), 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) [2022-07-13 11:46:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58020 states to 58020 states and 69939 transitions. [2022-07-13 11:46:08,860 INFO L78 Accepts]: Start accepts. Automaton has 58020 states and 69939 transitions. Word has length 225 [2022-07-13 11:46:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:08,860 INFO L495 AbstractCegarLoop]: Abstraction has 58020 states and 69939 transitions. [2022-07-13 11:46:08,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2022-07-13 11:46:08,861 INFO L276 IsEmpty]: Start isEmpty. Operand 58020 states and 69939 transitions. [2022-07-13 11:46:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-13 11:46:08,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:08,888 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-13 11:46:08,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 11:46:09,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:09,105 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:09,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1449683417, now seen corresponding path program 1 times [2022-07-13 11:46:09,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:09,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133905471] [2022-07-13 11:46:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:09,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-13 11:46:09,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:09,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133905471] [2022-07-13 11:46:09,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133905471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:09,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:09,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:09,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811421050] [2022-07-13 11:46:09,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:09,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:09,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:09,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:09,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:09,423 INFO L87 Difference]: Start difference. First operand 58020 states and 69939 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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) [2022-07-13 11:46:10,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:10,330 INFO L93 Difference]: Finished difference Result 121138 states and 146004 transitions. [2022-07-13 11:46:10,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:10,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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 229 [2022-07-13 11:46:10,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:10,403 INFO L225 Difference]: With dead ends: 121138 [2022-07-13 11:46:10,403 INFO L226 Difference]: Without dead ends: 63933 [2022-07-13 11:46:10,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:10,434 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 214 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:10,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 402 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:46:10,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63933 states. [2022-07-13 11:46:11,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63933 to 54566. [2022-07-13 11:46:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54566 states, 54565 states have (on average 1.2010812792082837) internal successors, (65537), 54565 states have internal predecessors, (65537), 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) [2022-07-13 11:46:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54566 states to 54566 states and 65537 transitions. [2022-07-13 11:46:11,209 INFO L78 Accepts]: Start accepts. Automaton has 54566 states and 65537 transitions. Word has length 229 [2022-07-13 11:46:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:11,210 INFO L495 AbstractCegarLoop]: Abstraction has 54566 states and 65537 transitions. [2022-07-13 11:46:11,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 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) [2022-07-13 11:46:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 54566 states and 65537 transitions. [2022-07-13 11:46:11,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-07-13 11:46:11,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:11,235 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-13 11:46:11,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 11:46:11,236 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:11,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1788441567, now seen corresponding path program 1 times [2022-07-13 11:46:11,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:11,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259534176] [2022-07-13 11:46:11,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:11,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 96 proven. 6 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-13 11:46:11,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:11,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259534176] [2022-07-13 11:46:11,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259534176] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:11,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284320006] [2022-07-13 11:46:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:11,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:11,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:11,314 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) [2022-07-13 11:46:11,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 11:46:11,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:11,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:46:11,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:11,679 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 11:46:11,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:46:11,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284320006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:11,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:46:11,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:46:11,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490749466] [2022-07-13 11:46:11,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:11,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:11,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:11,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:11,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:11,681 INFO L87 Difference]: Start difference. First operand 54566 states and 65537 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2022-07-13 11:46:12,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:12,614 INFO L93 Difference]: Finished difference Result 108115 states and 129933 transitions. [2022-07-13 11:46:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:12,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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 [2022-07-13 11:46:12,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:12,680 INFO L225 Difference]: With dead ends: 108115 [2022-07-13 11:46:12,680 INFO L226 Difference]: Without dead ends: 54364 [2022-07-13 11:46:12,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:12,691 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 258 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:12,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 99 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:46:12,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54364 states. [2022-07-13 11:46:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54364 to 54361. [2022-07-13 11:46:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54361 states, 54360 states have (on average 1.1869389256806475) internal successors, (64522), 54360 states have internal predecessors, (64522), 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) [2022-07-13 11:46:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54361 states to 54361 states and 64522 transitions. [2022-07-13 11:46:13,339 INFO L78 Accepts]: Start accepts. Automaton has 54361 states and 64522 transitions. Word has length 245 [2022-07-13 11:46:13,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:13,340 INFO L495 AbstractCegarLoop]: Abstraction has 54361 states and 64522 transitions. [2022-07-13 11:46:13,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 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) [2022-07-13 11:46:13,340 INFO L276 IsEmpty]: Start isEmpty. Operand 54361 states and 64522 transitions. [2022-07-13 11:46:13,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-07-13 11:46:13,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:13,383 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, 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] [2022-07-13 11:46:13,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 11:46:13,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:13,600 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:13,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash 104676069, now seen corresponding path program 1 times [2022-07-13 11:46:13,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:13,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157135043] [2022-07-13 11:46:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:13,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:13,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:13,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157135043] [2022-07-13 11:46:13,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157135043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:13,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:13,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:13,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166120192] [2022-07-13 11:46:13,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:13,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:13,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:13,706 INFO L87 Difference]: Start difference. First operand 54361 states and 64522 transitions. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 2 states have internal predecessors, (284), 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) [2022-07-13 11:46:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:14,796 INFO L93 Difference]: Finished difference Result 115244 states and 136569 transitions. [2022-07-13 11:46:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:14,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 2 states have internal predecessors, (284), 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 284 [2022-07-13 11:46:14,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:14,865 INFO L225 Difference]: With dead ends: 115244 [2022-07-13 11:46:14,865 INFO L226 Difference]: Without dead ends: 61698 [2022-07-13 11:46:14,896 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 [2022-07-13 11:46:14,897 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 106 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:14,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 198 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:46:14,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61698 states. [2022-07-13 11:46:15,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61698 to 61693. [2022-07-13 11:46:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61693 states, 61692 states have (on average 1.1803313233482462) internal successors, (72817), 61692 states have internal predecessors, (72817), 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) [2022-07-13 11:46:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61693 states to 61693 states and 72817 transitions. [2022-07-13 11:46:15,764 INFO L78 Accepts]: Start accepts. Automaton has 61693 states and 72817 transitions. Word has length 284 [2022-07-13 11:46:15,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:15,765 INFO L495 AbstractCegarLoop]: Abstraction has 61693 states and 72817 transitions. [2022-07-13 11:46:15,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 2 states have internal predecessors, (284), 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) [2022-07-13 11:46:15,765 INFO L276 IsEmpty]: Start isEmpty. Operand 61693 states and 72817 transitions. [2022-07-13 11:46:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-13 11:46:15,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:15,803 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, 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] [2022-07-13 11:46:15,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 11:46:15,803 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:15,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:15,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1813611280, now seen corresponding path program 1 times [2022-07-13 11:46:15,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:15,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338902594] [2022-07-13 11:46:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:15,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:16,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:16,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338902594] [2022-07-13 11:46:16,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338902594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:16,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:16,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:16,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192610356] [2022-07-13 11:46:16,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:16,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:46:16,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:16,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:46:16,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:46:16,247 INFO L87 Difference]: Start difference. First operand 61693 states and 72817 transitions. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-07-13 11:46:17,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:17,126 INFO L93 Difference]: Finished difference Result 125819 states and 148339 transitions. [2022-07-13 11:46:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:46:17,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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 291 [2022-07-13 11:46:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:17,200 INFO L225 Difference]: With dead ends: 125819 [2022-07-13 11:46:17,200 INFO L226 Difference]: Without dead ends: 65347 [2022-07-13 11:46:17,243 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 [2022-07-13 11:46:17,243 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 506 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:17,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 209 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:46:17,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65347 states. [2022-07-13 11:46:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65347 to 64332. [2022-07-13 11:46:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64332 states, 64331 states have (on average 1.1661873746716203) internal successors, (75022), 64331 states have internal predecessors, (75022), 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) [2022-07-13 11:46:18,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64332 states to 64332 states and 75022 transitions. [2022-07-13 11:46:18,163 INFO L78 Accepts]: Start accepts. Automaton has 64332 states and 75022 transitions. Word has length 291 [2022-07-13 11:46:18,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:18,164 INFO L495 AbstractCegarLoop]: Abstraction has 64332 states and 75022 transitions. [2022-07-13 11:46:18,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 3 states have internal predecessors, (291), 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) [2022-07-13 11:46:18,164 INFO L276 IsEmpty]: Start isEmpty. Operand 64332 states and 75022 transitions. [2022-07-13 11:46:18,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-07-13 11:46:18,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:18,207 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 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] [2022-07-13 11:46:18,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 11:46:18,207 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:18,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:18,208 INFO L85 PathProgramCache]: Analyzing trace with hash 216496431, now seen corresponding path program 1 times [2022-07-13 11:46:18,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:18,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146985643] [2022-07-13 11:46:18,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:18,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:18,524 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 11:46:18,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:18,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146985643] [2022-07-13 11:46:18,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146985643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:18,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:18,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:18,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666903204] [2022-07-13 11:46:18,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:18,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:46:18,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:18,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:46:18,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:46:18,527 INFO L87 Difference]: Start difference. First operand 64332 states and 75022 transitions. Second operand has 4 states, 4 states have (on average 73.5) internal successors, (294), 3 states have internal predecessors, (294), 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) [2022-07-13 11:46:19,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:19,373 INFO L93 Difference]: Finished difference Result 113378 states and 132116 transitions. [2022-07-13 11:46:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:46:19,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 3 states have internal predecessors, (294), 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 299 [2022-07-13 11:46:19,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:19,429 INFO L225 Difference]: With dead ends: 113378 [2022-07-13 11:46:19,430 INFO L226 Difference]: Without dead ends: 47831 [2022-07-13 11:46:19,468 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 [2022-07-13 11:46:19,469 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 472 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:19,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 46 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:46:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47831 states. [2022-07-13 11:46:20,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47831 to 43151. [2022-07-13 11:46:20,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43151 states, 43150 states have (on average 1.1064194669756662) internal successors, (47742), 43150 states have internal predecessors, (47742), 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) [2022-07-13 11:46:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43151 states to 43151 states and 47742 transitions. [2022-07-13 11:46:20,102 INFO L78 Accepts]: Start accepts. Automaton has 43151 states and 47742 transitions. Word has length 299 [2022-07-13 11:46:20,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:20,102 INFO L495 AbstractCegarLoop]: Abstraction has 43151 states and 47742 transitions. [2022-07-13 11:46:20,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.5) internal successors, (294), 3 states have internal predecessors, (294), 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) [2022-07-13 11:46:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 43151 states and 47742 transitions. [2022-07-13 11:46:20,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-07-13 11:46:20,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:20,133 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:20,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 11:46:20,133 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:20,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:20,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1942770861, now seen corresponding path program 1 times [2022-07-13 11:46:20,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:20,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019686356] [2022-07-13 11:46:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:20,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-13 11:46:20,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:20,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019686356] [2022-07-13 11:46:20,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019686356] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:20,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:20,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:20,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118362584] [2022-07-13 11:46:20,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:20,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:46:20,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:20,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:46:20,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:46:20,221 INFO L87 Difference]: Start difference. First operand 43151 states and 47742 transitions. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 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) [2022-07-13 11:46:21,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:21,083 INFO L93 Difference]: Finished difference Result 85716 states and 94886 transitions. [2022-07-13 11:46:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:46:21,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 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 317 [2022-07-13 11:46:21,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:21,131 INFO L225 Difference]: With dead ends: 85716 [2022-07-13 11:46:21,131 INFO L226 Difference]: Without dead ends: 42365 [2022-07-13 11:46:21,157 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 [2022-07-13 11:46:21,157 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 369 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:21,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 78 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:46:21,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42365 states. [2022-07-13 11:46:21,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42365 to 41933. [2022-07-13 11:46:21,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41933 states, 41932 states have (on average 1.1063626824382333) internal successors, (46392), 41932 states have internal predecessors, (46392), 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) [2022-07-13 11:46:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41933 states to 41933 states and 46392 transitions. [2022-07-13 11:46:21,782 INFO L78 Accepts]: Start accepts. Automaton has 41933 states and 46392 transitions. Word has length 317 [2022-07-13 11:46:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:21,782 INFO L495 AbstractCegarLoop]: Abstraction has 41933 states and 46392 transitions. [2022-07-13 11:46:21,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 3 states have internal predecessors, (244), 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) [2022-07-13 11:46:21,782 INFO L276 IsEmpty]: Start isEmpty. Operand 41933 states and 46392 transitions. [2022-07-13 11:46:21,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-07-13 11:46:21,812 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:21,812 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, 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] [2022-07-13 11:46:21,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 11:46:21,813 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:21,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:21,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1552249769, now seen corresponding path program 1 times [2022-07-13 11:46:21,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:21,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094188395] [2022-07-13 11:46:21,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:21,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:21,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 74 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-13 11:46:21,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:21,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094188395] [2022-07-13 11:46:21,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094188395] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:21,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601556852] [2022-07-13 11:46:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:21,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:21,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:21,890 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) [2022-07-13 11:46:21,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 11:46:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:22,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 572 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 11:46:22,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-13 11:46:22,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:46:22,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601556852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:22,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:46:22,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:46:22,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531720136] [2022-07-13 11:46:22,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:22,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:46:22,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:46:22,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:46:22,155 INFO L87 Difference]: Start difference. First operand 41933 states and 46392 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 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) [2022-07-13 11:46:23,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:23,142 INFO L93 Difference]: Finished difference Result 107091 states and 118335 transitions. [2022-07-13 11:46:23,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:46:23,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 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 322 [2022-07-13 11:46:23,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:23,218 INFO L225 Difference]: With dead ends: 107091 [2022-07-13 11:46:23,219 INFO L226 Difference]: Without dead ends: 65363 [2022-07-13 11:46:23,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:46:23,250 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 462 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:23,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 441 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:23,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65363 states. [2022-07-13 11:46:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65363 to 58633. [2022-07-13 11:46:24,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58633 states, 58632 states have (on average 1.097352981307136) internal successors, (64340), 58632 states have internal predecessors, (64340), 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) [2022-07-13 11:46:24,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58633 states to 58633 states and 64340 transitions. [2022-07-13 11:46:24,209 INFO L78 Accepts]: Start accepts. Automaton has 58633 states and 64340 transitions. Word has length 322 [2022-07-13 11:46:24,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:24,210 INFO L495 AbstractCegarLoop]: Abstraction has 58633 states and 64340 transitions. [2022-07-13 11:46:24,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 3 states have internal predecessors, (199), 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) [2022-07-13 11:46:24,210 INFO L276 IsEmpty]: Start isEmpty. Operand 58633 states and 64340 transitions. [2022-07-13 11:46:24,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-07-13 11:46:24,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:24,240 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, 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, 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] [2022-07-13 11:46:24,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 11:46:24,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:24,456 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:24,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:24,456 INFO L85 PathProgramCache]: Analyzing trace with hash 942765593, now seen corresponding path program 1 times [2022-07-13 11:46:24,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:24,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262799114] [2022-07-13 11:46:24,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:24,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:24,592 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 329 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-13 11:46:24,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:24,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262799114] [2022-07-13 11:46:24,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262799114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:24,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:24,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:24,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108988795] [2022-07-13 11:46:24,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:24,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:46:24,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:24,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:46:24,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:46:24,595 INFO L87 Difference]: Start difference. First operand 58633 states and 64340 transitions. Second operand has 4 states, 4 states have (on average 77.25) 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) [2022-07-13 11:46:25,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:25,534 INFO L93 Difference]: Finished difference Result 142273 states and 156496 transitions. [2022-07-13 11:46:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:46:25,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.25) 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 382 [2022-07-13 11:46:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:25,632 INFO L225 Difference]: With dead ends: 142273 [2022-07-13 11:46:25,632 INFO L226 Difference]: Without dead ends: 84049 [2022-07-13 11:46:25,677 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 [2022-07-13 11:46:25,678 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 328 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:25,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 403 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:46:25,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84049 states. [2022-07-13 11:46:26,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84049 to 82406. [2022-07-13 11:46:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82406 states, 82405 states have (on average 1.0927734967538378) internal successors, (90050), 82405 states have internal predecessors, (90050), 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) [2022-07-13 11:46:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82406 states to 82406 states and 90050 transitions. [2022-07-13 11:46:27,101 INFO L78 Accepts]: Start accepts. Automaton has 82406 states and 90050 transitions. Word has length 382 [2022-07-13 11:46:27,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:27,109 INFO L495 AbstractCegarLoop]: Abstraction has 82406 states and 90050 transitions. [2022-07-13 11:46:27,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) 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) [2022-07-13 11:46:27,110 INFO L276 IsEmpty]: Start isEmpty. Operand 82406 states and 90050 transitions. [2022-07-13 11:46:27,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-07-13 11:46:27,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:27,141 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, 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, 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] [2022-07-13 11:46:27,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 11:46:27,141 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash -588192627, now seen corresponding path program 1 times [2022-07-13 11:46:27,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:27,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119547483] [2022-07-13 11:46:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:27,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:27,316 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2022-07-13 11:46:27,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:27,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119547483] [2022-07-13 11:46:27,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119547483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:27,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:27,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:27,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656145619] [2022-07-13 11:46:27,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:27,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:27,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:27,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:27,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:27,318 INFO L87 Difference]: Start difference. First operand 82406 states and 90050 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 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) [2022-07-13 11:46:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:28,157 INFO L93 Difference]: Finished difference Result 176416 states and 192551 transitions. [2022-07-13 11:46:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:28,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 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 390 [2022-07-13 11:46:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:28,270 INFO L225 Difference]: With dead ends: 176416 [2022-07-13 11:46:28,270 INFO L226 Difference]: Without dead ends: 94418 [2022-07-13 11:46:28,320 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 [2022-07-13 11:46:28,321 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 203 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:28,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 107 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:46:28,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94418 states. [2022-07-13 11:46:29,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94418 to 94003. [2022-07-13 11:46:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94003 states, 94002 states have (on average 1.088764068849599) internal successors, (102346), 94002 states have internal predecessors, (102346), 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) [2022-07-13 11:46:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94003 states to 94003 states and 102346 transitions. [2022-07-13 11:46:29,934 INFO L78 Accepts]: Start accepts. Automaton has 94003 states and 102346 transitions. Word has length 390 [2022-07-13 11:46:29,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:29,934 INFO L495 AbstractCegarLoop]: Abstraction has 94003 states and 102346 transitions. [2022-07-13 11:46:29,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 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) [2022-07-13 11:46:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 94003 states and 102346 transitions. [2022-07-13 11:46:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-07-13 11:46:29,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:29,967 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:29,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 11:46:29,968 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:29,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:29,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1321112198, now seen corresponding path program 1 times [2022-07-13 11:46:29,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:29,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735813166] [2022-07-13 11:46:29,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:29,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:30,065 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-13 11:46:30,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:30,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735813166] [2022-07-13 11:46:30,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735813166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:30,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:30,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:30,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632757071] [2022-07-13 11:46:30,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:30,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:46:30,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:46:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:46:30,069 INFO L87 Difference]: Start difference. First operand 94003 states and 102346 transitions. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 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) [2022-07-13 11:46:31,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:31,495 INFO L93 Difference]: Finished difference Result 194552 states and 211667 transitions. [2022-07-13 11:46:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:46:31,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 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 406 [2022-07-13 11:46:31,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:31,627 INFO L225 Difference]: With dead ends: 194552 [2022-07-13 11:46:31,627 INFO L226 Difference]: Without dead ends: 98521 [2022-07-13 11:46:31,663 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 [2022-07-13 11:46:31,663 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 346 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:31,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 115 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98521 states. [2022-07-13 11:46:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98521 to 95428. [2022-07-13 11:46:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95428 states, 95427 states have (on average 1.0866002284468756) internal successors, (103691), 95427 states have internal predecessors, (103691), 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) [2022-07-13 11:46:32,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95428 states to 95428 states and 103691 transitions. [2022-07-13 11:46:32,861 INFO L78 Accepts]: Start accepts. Automaton has 95428 states and 103691 transitions. Word has length 406 [2022-07-13 11:46:32,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:32,861 INFO L495 AbstractCegarLoop]: Abstraction has 95428 states and 103691 transitions. [2022-07-13 11:46:32,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 3 states have internal predecessors, (265), 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) [2022-07-13 11:46:32,861 INFO L276 IsEmpty]: Start isEmpty. Operand 95428 states and 103691 transitions. [2022-07-13 11:46:32,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-07-13 11:46:32,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:32,896 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, 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, 3, 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] [2022-07-13 11:46:32,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 11:46:32,896 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1903808813, now seen corresponding path program 1 times [2022-07-13 11:46:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:32,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857128689] [2022-07-13 11:46:32,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:32,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:32,998 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 254 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-13 11:46:32,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:32,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857128689] [2022-07-13 11:46:32,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857128689] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:32,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718753511] [2022-07-13 11:46:32,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:32,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:32,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:33,000 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) [2022-07-13 11:46:33,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 11:46:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:33,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:46:33,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-13 11:46:33,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:46:33,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718753511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:33,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:46:33,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2022-07-13 11:46:33,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864419333] [2022-07-13 11:46:33,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:33,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:33,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:33,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:33,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:33,288 INFO L87 Difference]: Start difference. First operand 95428 states and 103691 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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) [2022-07-13 11:46:34,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:34,346 INFO L93 Difference]: Finished difference Result 277324 states and 301350 transitions. [2022-07-13 11:46:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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 [2022-07-13 11:46:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:34,604 INFO L225 Difference]: With dead ends: 277324 [2022-07-13 11:46:34,605 INFO L226 Difference]: Without dead ends: 182710 [2022-07-13 11:46:34,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:34,699 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 179 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:34,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 474 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 11:46:34,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182710 states. [2022-07-13 11:46:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182710 to 180463. [2022-07-13 11:46:36,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180463 states, 180462 states have (on average 1.0860679810708072) internal successors, (195994), 180462 states have internal predecessors, (195994), 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) [2022-07-13 11:46:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180463 states to 180463 states and 195994 transitions. [2022-07-13 11:46:37,102 INFO L78 Accepts]: Start accepts. Automaton has 180463 states and 195994 transitions. Word has length 414 [2022-07-13 11:46:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:37,102 INFO L495 AbstractCegarLoop]: Abstraction has 180463 states and 195994 transitions. [2022-07-13 11:46:37,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 2 states have internal predecessors, (286), 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) [2022-07-13 11:46:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 180463 states and 195994 transitions. [2022-07-13 11:46:37,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2022-07-13 11:46:37,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:37,133 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, 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, 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] [2022-07-13 11:46:37,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 11:46:37,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:37,344 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:37,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash 851411460, now seen corresponding path program 1 times [2022-07-13 11:46:37,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:37,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720736905] [2022-07-13 11:46:37,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:37,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:37,445 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-13 11:46:37,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:37,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720736905] [2022-07-13 11:46:37,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720736905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:37,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:37,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:37,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050675730] [2022-07-13 11:46:37,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:37,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:37,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:37,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:37,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:37,450 INFO L87 Difference]: Start difference. First operand 180463 states and 195994 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 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) [2022-07-13 11:46:39,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:39,029 INFO L93 Difference]: Finished difference Result 363776 states and 394951 transitions. [2022-07-13 11:46:39,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:39,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 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 424 [2022-07-13 11:46:39,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:39,262 INFO L225 Difference]: With dead ends: 363776 [2022-07-13 11:46:39,262 INFO L226 Difference]: Without dead ends: 184127 [2022-07-13 11:46:39,364 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 [2022-07-13 11:46:39,365 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 184 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:39,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 120 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:46:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184127 states. [2022-07-13 11:46:41,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184127 to 184123. [2022-07-13 11:46:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184123 states, 184122 states have (on average 1.085063164640836) internal successors, (199784), 184122 states have internal predecessors, (199784), 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) [2022-07-13 11:46:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184123 states to 184123 states and 199784 transitions. [2022-07-13 11:46:42,535 INFO L78 Accepts]: Start accepts. Automaton has 184123 states and 199784 transitions. Word has length 424 [2022-07-13 11:46:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:42,535 INFO L495 AbstractCegarLoop]: Abstraction has 184123 states and 199784 transitions. [2022-07-13 11:46:42,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 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) [2022-07-13 11:46:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 184123 states and 199784 transitions. [2022-07-13 11:46:42,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2022-07-13 11:46:42,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:42,572 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, 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, 3, 3, 3, 3, 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] [2022-07-13 11:46:42,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 11:46:42,573 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:42,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:42,574 INFO L85 PathProgramCache]: Analyzing trace with hash 80875035, now seen corresponding path program 1 times [2022-07-13 11:46:42,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:42,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975292034] [2022-07-13 11:46:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:42,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 394 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:42,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:42,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975292034] [2022-07-13 11:46:42,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975292034] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:42,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320255059] [2022-07-13 11:46:42,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:42,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:42,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:42,719 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) [2022-07-13 11:46:42,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 11:46:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:42,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 11:46:42,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 11:46:43,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:46:43,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320255059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:43,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:46:43,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-13 11:46:43,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103775818] [2022-07-13 11:46:43,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:43,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:43,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:43,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:43,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:46:43,163 INFO L87 Difference]: Start difference. First operand 184123 states and 199784 transitions. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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) [2022-07-13 11:46:44,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:44,794 INFO L93 Difference]: Finished difference Result 366833 states and 398338 transitions. [2022-07-13 11:46:44,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:44,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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 431 [2022-07-13 11:46:44,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:45,029 INFO L225 Difference]: With dead ends: 366833 [2022-07-13 11:46:45,029 INFO L226 Difference]: Without dead ends: 184133 [2022-07-13 11:46:45,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:46:45,114 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 88 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:45,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 331 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:46:45,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184133 states.