./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/Problem17_label10.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 afd00c5a93002b45b7132abaca316e0e6d6e8def0f5c0ab18ec075bedc375e21 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 12:38:57,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 12:38:57,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 12:38:57,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 12:38:57,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 12:38:57,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 12:38:57,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 12:38:57,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 12:38:57,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 12:38:57,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 12:38:57,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 12:38:57,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 12:38:57,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 12:38:57,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 12:38:57,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 12:38:57,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 12:38:57,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 12:38:57,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 12:38:57,181 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 12:38:57,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 12:38:57,188 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 12:38:57,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 12:38:57,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 12:38:57,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 12:38:57,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 12:38:57,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 12:38:57,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 12:38:57,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 12:38:57,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 12:38:57,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 12:38:57,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 12:38:57,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 12:38:57,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 12:38:57,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 12:38:57,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 12:38:57,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 12:38:57,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 12:38:57,199 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 12:38:57,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 12:38:57,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 12:38:57,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 12:38:57,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 12:38:57,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 12:38:57,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 12:38:57,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 12:38:57,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 12:38:57,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 12:38:57,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 12:38:57,229 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 12:38:57,230 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 12:38:57,230 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 12:38:57,230 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 12:38:57,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 12:38:57,231 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 12:38:57,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 12:38:57,231 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 12:38:57,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 12:38:57,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 12:38:57,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 12:38:57,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 12:38:57,232 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 12:38:57,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 12:38:57,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 12:38:57,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 12:38:57,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 12:38:57,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 12:38:57,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 12:38:57,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:38:57,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 12:38:57,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 12:38:57,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 12:38:57,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 12:38:57,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 12:38:57,234 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 12:38:57,235 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 12:38:57,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 12:38:57,235 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> afd00c5a93002b45b7132abaca316e0e6d6e8def0f5c0ab18ec075bedc375e21 [2022-07-19 12:38:57,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 12:38:57,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 12:38:57,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 12:38:57,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 12:38:57,439 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 12:38:57,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label10.c [2022-07-19 12:38:57,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436f80230/a470ab59d57b4d66bdd1db59d13933bf/FLAG7968a51ca [2022-07-19 12:38:57,921 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 12:38:57,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label10.c [2022-07-19 12:38:57,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436f80230/a470ab59d57b4d66bdd1db59d13933bf/FLAG7968a51ca [2022-07-19 12:38:58,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/436f80230/a470ab59d57b4d66bdd1db59d13933bf [2022-07-19 12:38:58,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 12:38:58,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 12:38:58,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 12:38:58,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 12:38:58,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 12:38:58,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:38:58" (1/1) ... [2022-07-19 12:38:58,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a49d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:58, skipping insertion in model container [2022-07-19 12:38:58,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:38:58" (1/1) ... [2022-07-19 12:38:58,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 12:38:58,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 12:38:58,500 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/Problem17_label10.c[5916,5929] [2022-07-19 12:38:58,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:38:58,944 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 12:38:58,967 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/Problem17_label10.c[5916,5929] [2022-07-19 12:38:59,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:38:59,272 INFO L208 MainTranslator]: Completed translation [2022-07-19 12:38:59,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59 WrapperNode [2022-07-19 12:38:59,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 12:38:59,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 12:38:59,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 12:38:59,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 12:38:59,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59" (1/1) ... [2022-07-19 12:38:59,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59" (1/1) ... [2022-07-19 12:38:59,493 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-07-19 12:38:59,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 12:38:59,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 12:38:59,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 12:38:59,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 12:38:59,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59" (1/1) ... [2022-07-19 12:38:59,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59" (1/1) ... [2022-07-19 12:38:59,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59" (1/1) ... [2022-07-19 12:38:59,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59" (1/1) ... [2022-07-19 12:38:59,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59" (1/1) ... [2022-07-19 12:38:59,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59" (1/1) ... [2022-07-19 12:38:59,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59" (1/1) ... [2022-07-19 12:38:59,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 12:38:59,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 12:38:59,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 12:38:59,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 12:38:59,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59" (1/1) ... [2022-07-19 12:38:59,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:38:59,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:38:59,816 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) [2022-07-19 12:38:59,834 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 [2022-07-19 12:38:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 12:38:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 12:38:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 12:38:59,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 12:38:59,895 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 12:38:59,896 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 12:39:02,300 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 12:39:02,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 12:39:02,315 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 12:39:02,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:39:02 BoogieIcfgContainer [2022-07-19 12:39:02,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 12:39:02,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 12:39:02,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 12:39:02,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 12:39:02,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 12:38:58" (1/3) ... [2022-07-19 12:39:02,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559d834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:39:02, skipping insertion in model container [2022-07-19 12:39:02,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:38:59" (2/3) ... [2022-07-19 12:39:02,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559d834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:39:02, skipping insertion in model container [2022-07-19 12:39:02,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:39:02" (3/3) ... [2022-07-19 12:39:02,326 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label10.c [2022-07-19 12:39:02,336 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 12:39:02,336 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 12:39:02,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 12:39:02,393 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@4cdcd2fb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@9ae2d8b [2022-07-19 12:39:02,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 12:39:02,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 12:39:02,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:02,408 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] [2022-07-19 12:39:02,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:02,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:02,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1453294289, now seen corresponding path program 1 times [2022-07-19 12:39:02,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:02,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457850849] [2022-07-19 12:39:02,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:02,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:39:02,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:02,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457850849] [2022-07-19 12:39:02,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457850849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:02,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:02,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:39:02,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46760432] [2022-07-19 12:39:02,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:02,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:02,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:02,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:02,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:02,598 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 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 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:04,850 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-07-19 12:39:04,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:04,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-07-19 12:39:04,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:04,867 INFO L225 Difference]: With dead ends: 1642 [2022-07-19 12:39:04,867 INFO L226 Difference]: Without dead ends: 975 [2022-07-19 12:39:04,871 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 [2022-07-19 12:39:04,873 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 451 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:04,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:39:04,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-07-19 12:39:04,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-07-19 12:39:04,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-07-19 12:39:04,931 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 39 [2022-07-19 12:39:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:04,932 INFO L495 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-07-19 12:39:04,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:04,932 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-07-19 12:39:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 12:39:04,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:04,935 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:04,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 12:39:04,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:04,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash -536581628, now seen corresponding path program 1 times [2022-07-19 12:39:04,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:04,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160700581] [2022-07-19 12:39:04,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:04,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:39:05,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:05,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160700581] [2022-07-19 12:39:05,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160700581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:05,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:05,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:39:05,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25513311] [2022-07-19 12:39:05,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:05,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:05,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:05,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:05,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:05,050 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:06,920 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-07-19 12:39:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:06,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-19 12:39:06,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:06,927 INFO L225 Difference]: With dead ends: 2814 [2022-07-19 12:39:06,928 INFO L226 Difference]: Without dead ends: 1844 [2022-07-19 12:39:06,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:06,934 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 452 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:06,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 12:39:06,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-07-19 12:39:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-07-19 12:39:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-07-19 12:39:06,975 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 109 [2022-07-19 12:39:06,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:06,977 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-07-19 12:39:06,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:06,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-07-19 12:39:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 12:39:06,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:06,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:06,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 12:39:06,988 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:06,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:06,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1533010305, now seen corresponding path program 1 times [2022-07-19 12:39:06,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:06,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715859306] [2022-07-19 12:39:06,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:06,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:39:07,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:07,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715859306] [2022-07-19 12:39:07,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715859306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:07,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:07,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:39:07,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725513535] [2022-07-19 12:39:07,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:07,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:07,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:07,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:07,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:07,085 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:08,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:08,802 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-07-19 12:39:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:08,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-07-19 12:39:08,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:08,809 INFO L225 Difference]: With dead ends: 5395 [2022-07-19 12:39:08,810 INFO L226 Difference]: Without dead ends: 2701 [2022-07-19 12:39:08,813 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 [2022-07-19 12:39:08,813 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:08,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:39:08,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-07-19 12:39:08,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-07-19 12:39:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:08,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-07-19 12:39:08,849 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 131 [2022-07-19 12:39:08,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:08,849 INFO L495 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-07-19 12:39:08,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 2 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:08,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-07-19 12:39:08,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-19 12:39:08,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:08,855 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:08,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 12:39:08,855 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:08,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:08,858 INFO L85 PathProgramCache]: Analyzing trace with hash -973199442, now seen corresponding path program 1 times [2022-07-19 12:39:08,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:08,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505800013] [2022-07-19 12:39:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:08,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:39:09,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:09,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505800013] [2022-07-19 12:39:09,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505800013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:09,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:09,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:39:09,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945224496] [2022-07-19 12:39:09,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:09,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:09,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:09,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:09,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:09,010 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 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) [2022-07-19 12:39:10,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:10,387 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-07-19 12:39:10,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:10,387 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 191 [2022-07-19 12:39:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:10,406 INFO L225 Difference]: With dead ends: 7108 [2022-07-19 12:39:10,407 INFO L226 Difference]: Without dead ends: 4409 [2022-07-19 12:39:10,411 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 [2022-07-19 12:39:10,415 INFO L413 NwaCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:10,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 12:39:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-07-19 12:39:10,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-07-19 12:39:10,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-07-19 12:39:10,474 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 191 [2022-07-19 12:39:10,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:10,475 INFO L495 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-07-19 12:39:10,475 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) [2022-07-19 12:39:10,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-07-19 12:39:10,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-19 12:39:10,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:10,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:10,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 12:39:10,478 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:10,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:10,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1396957395, now seen corresponding path program 1 times [2022-07-19 12:39:10,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:10,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137109545] [2022-07-19 12:39:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:10,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-19 12:39:10,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:10,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137109545] [2022-07-19 12:39:10,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137109545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:10,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:10,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:39:10,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534657877] [2022-07-19 12:39:10,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:10,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:10,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:10,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:10,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:10,584 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:12,142 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-07-19 12:39:12,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:12,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 [2022-07-19 12:39:12,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:12,157 INFO L225 Difference]: With dead ends: 10936 [2022-07-19 12:39:12,157 INFO L226 Difference]: Without dead ends: 6528 [2022-07-19 12:39:12,161 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 [2022-07-19 12:39:12,162 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 412 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:12,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 12:39:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-07-19 12:39:12,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-07-19 12:39:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:12,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-07-19 12:39:12,224 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 193 [2022-07-19 12:39:12,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:12,225 INFO L495 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-07-19 12:39:12,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:12,228 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-07-19 12:39:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-19 12:39:12,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:12,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:12,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 12:39:12,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:12,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:12,232 INFO L85 PathProgramCache]: Analyzing trace with hash -856254131, now seen corresponding path program 1 times [2022-07-19 12:39:12,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:12,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761603892] [2022-07-19 12:39:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:12,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-19 12:39:12,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:12,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761603892] [2022-07-19 12:39:12,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761603892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:12,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:12,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:39:12,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643972754] [2022-07-19 12:39:12,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:12,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:12,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:12,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:12,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:12,366 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) [2022-07-19 12:39:14,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:14,046 INFO L93 Difference]: Finished difference Result 10910 states and 12924 transitions. [2022-07-19 12:39:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:14,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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 259 [2022-07-19 12:39:14,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:14,062 INFO L225 Difference]: With dead ends: 10910 [2022-07-19 12:39:14,063 INFO L226 Difference]: Without dead ends: 6530 [2022-07-19 12:39:14,067 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 [2022-07-19 12:39:14,067 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 466 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:14,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 413 Invalid, 1556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:39:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6530 states. [2022-07-19 12:39:14,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6530 to 6096. [2022-07-19 12:39:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6096 states, 6095 states have (on average 1.188515176374077) internal successors, (7244), 6095 states have internal predecessors, (7244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6096 states to 6096 states and 7244 transitions. [2022-07-19 12:39:14,178 INFO L78 Accepts]: Start accepts. Automaton has 6096 states and 7244 transitions. Word has length 259 [2022-07-19 12:39:14,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:14,179 INFO L495 AbstractCegarLoop]: Abstraction has 6096 states and 7244 transitions. [2022-07-19 12:39:14,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 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) [2022-07-19 12:39:14,179 INFO L276 IsEmpty]: Start isEmpty. Operand 6096 states and 7244 transitions. [2022-07-19 12:39:14,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2022-07-19 12:39:14,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:14,182 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:14,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 12:39:14,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1988884689, now seen corresponding path program 1 times [2022-07-19 12:39:14,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:14,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564331390] [2022-07-19 12:39:14,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:14,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-19 12:39:14,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:14,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564331390] [2022-07-19 12:39:14,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564331390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:14,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:14,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:39:14,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629508157] [2022-07-19 12:39:14,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:14,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:14,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:14,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:14,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:14,302 INFO L87 Difference]: Start difference. First operand 6096 states and 7244 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) [2022-07-19 12:39:16,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:16,017 INFO L93 Difference]: Finished difference Result 15624 states and 18733 transitions. [2022-07-19 12:39:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:16,018 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 271 [2022-07-19 12:39:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:16,053 INFO L225 Difference]: With dead ends: 15624 [2022-07-19 12:39:16,053 INFO L226 Difference]: Without dead ends: 9093 [2022-07-19 12:39:16,060 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 [2022-07-19 12:39:16,061 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 494 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:16,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [494 Valid, 627 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 12:39:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9093 states. [2022-07-19 12:39:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9093 to 8660. [2022-07-19 12:39:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8660 states, 8659 states have (on average 1.1809677791892828) internal successors, (10226), 8659 states have internal predecessors, (10226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:16,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 10226 transitions. [2022-07-19 12:39:16,178 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 10226 transitions. Word has length 271 [2022-07-19 12:39:16,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:16,179 INFO L495 AbstractCegarLoop]: Abstraction has 8660 states and 10226 transitions. [2022-07-19 12:39:16,179 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) [2022-07-19 12:39:16,180 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 10226 transitions. [2022-07-19 12:39:16,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-07-19 12:39:16,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:16,182 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:16,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 12:39:16,183 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:16,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:16,183 INFO L85 PathProgramCache]: Analyzing trace with hash 786678162, now seen corresponding path program 1 times [2022-07-19 12:39:16,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:16,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952211314] [2022-07-19 12:39:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:16,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-19 12:39:16,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:16,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952211314] [2022-07-19 12:39:16,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952211314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:16,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:16,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:39:16,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773504820] [2022-07-19 12:39:16,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:16,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:16,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:16,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:16,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:16,321 INFO L87 Difference]: Start difference. First operand 8660 states and 10226 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:17,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:17,846 INFO L93 Difference]: Finished difference Result 20718 states and 24610 transitions. [2022-07-19 12:39:17,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:17,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 276 [2022-07-19 12:39:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:17,863 INFO L225 Difference]: With dead ends: 20718 [2022-07-19 12:39:17,863 INFO L226 Difference]: Without dead ends: 12060 [2022-07-19 12:39:17,871 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 [2022-07-19 12:39:17,872 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 379 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1178 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:17,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 826 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1178 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 12:39:17,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12060 states. [2022-07-19 12:39:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12060 to 11210. [2022-07-19 12:39:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11210 states, 11209 states have (on average 1.157819609242573) internal successors, (12978), 11209 states have internal predecessors, (12978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:17,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11210 states to 11210 states and 12978 transitions. [2022-07-19 12:39:17,993 INFO L78 Accepts]: Start accepts. Automaton has 11210 states and 12978 transitions. Word has length 276 [2022-07-19 12:39:17,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:17,993 INFO L495 AbstractCegarLoop]: Abstraction has 11210 states and 12978 transitions. [2022-07-19 12:39:17,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:17,994 INFO L276 IsEmpty]: Start isEmpty. Operand 11210 states and 12978 transitions. [2022-07-19 12:39:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-07-19 12:39:17,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:17,997 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:17,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 12:39:17,998 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:17,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:17,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1150250055, now seen corresponding path program 1 times [2022-07-19 12:39:17,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:17,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080857098] [2022-07-19 12:39:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:18,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-19 12:39:18,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:18,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080857098] [2022-07-19 12:39:18,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080857098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:18,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:18,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:39:18,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618953874] [2022-07-19 12:39:18,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:18,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:39:18,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:18,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:39:18,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:39:18,129 INFO L87 Difference]: Start difference. First operand 11210 states and 12978 transitions. Second operand has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:20,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:20,945 INFO L93 Difference]: Finished difference Result 40370 states and 46572 transitions. [2022-07-19 12:39:20,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:39:20,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 299 [2022-07-19 12:39:20,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:20,978 INFO L225 Difference]: With dead ends: 40370 [2022-07-19 12:39:20,979 INFO L226 Difference]: Without dead ends: 27449 [2022-07-19 12:39:20,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:39:20,993 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 876 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2596 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:20,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 295 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 2596 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 12:39:21,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27449 states. [2022-07-19 12:39:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27449 to 26980. [2022-07-19 12:39:21,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26980 states, 26979 states have (on average 1.1290262796990251) internal successors, (30460), 26979 states have internal predecessors, (30460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26980 states to 26980 states and 30460 transitions. [2022-07-19 12:39:21,325 INFO L78 Accepts]: Start accepts. Automaton has 26980 states and 30460 transitions. Word has length 299 [2022-07-19 12:39:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:21,328 INFO L495 AbstractCegarLoop]: Abstraction has 26980 states and 30460 transitions. [2022-07-19 12:39:21,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.5) internal successors, (218), 4 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:21,328 INFO L276 IsEmpty]: Start isEmpty. Operand 26980 states and 30460 transitions. [2022-07-19 12:39:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-07-19 12:39:21,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:21,335 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:21,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 12:39:21,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash -342445042, now seen corresponding path program 1 times [2022-07-19 12:39:21,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:21,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944448888] [2022-07-19 12:39:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:21,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 216 proven. 82 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-19 12:39:21,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:21,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944448888] [2022-07-19 12:39:21,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944448888] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:39:21,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294857598] [2022-07-19 12:39:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:21,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:39:21,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:39:21,620 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) [2022-07-19 12:39:21,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 12:39:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:21,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 12:39:21,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:39:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 182 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:39:22,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 12:39:22,673 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:39:22,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294857598] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 12:39:22,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 12:39:22,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 4] total 7 [2022-07-19 12:39:22,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615324511] [2022-07-19 12:39:22,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:22,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 12:39:22,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:22,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 12:39:22,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:39:22,675 INFO L87 Difference]: Start difference. First operand 26980 states and 30460 transitions. Second operand has 5 states, 5 states have (on average 76.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:25,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:25,636 INFO L93 Difference]: Finished difference Result 75670 states and 85245 transitions. [2022-07-19 12:39:25,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:39:25,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 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 380 [2022-07-19 12:39:25,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:25,708 INFO L225 Difference]: With dead ends: 75670 [2022-07-19 12:39:25,708 INFO L226 Difference]: Without dead ends: 47840 [2022-07-19 12:39:25,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 753 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:39:25,749 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 1545 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 687 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 687 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:25,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 165 Invalid, 3361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [687 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 12:39:25,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47840 states. [2022-07-19 12:39:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47840 to 46123. [2022-07-19 12:39:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46123 states, 46122 states have (on average 1.102012054984606) internal successors, (50827), 46122 states have internal predecessors, (50827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46123 states to 46123 states and 50827 transitions. [2022-07-19 12:39:26,379 INFO L78 Accepts]: Start accepts. Automaton has 46123 states and 50827 transitions. Word has length 380 [2022-07-19 12:39:26,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:26,380 INFO L495 AbstractCegarLoop]: Abstraction has 46123 states and 50827 transitions. [2022-07-19 12:39:26,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:26,380 INFO L276 IsEmpty]: Start isEmpty. Operand 46123 states and 50827 transitions. [2022-07-19 12:39:26,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-07-19 12:39:26,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:26,391 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:26,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 12:39:26,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 12:39:26,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash -60760240, now seen corresponding path program 1 times [2022-07-19 12:39:26,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:26,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841546167] [2022-07-19 12:39:26,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:26,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 519 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-19 12:39:26,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:26,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841546167] [2022-07-19 12:39:26,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841546167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:26,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:26,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:39:26,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988936397] [2022-07-19 12:39:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:26,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:26,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:26,718 INFO L87 Difference]: Start difference. First operand 46123 states and 50827 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:28,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:28,481 INFO L93 Difference]: Finished difference Result 108860 states and 120238 transitions. [2022-07-19 12:39:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:28,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 385 [2022-07-19 12:39:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:28,563 INFO L225 Difference]: With dead ends: 108860 [2022-07-19 12:39:28,564 INFO L226 Difference]: Without dead ends: 62739 [2022-07-19 12:39:28,602 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 [2022-07-19 12:39:28,603 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 397 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:28,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 334 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 12:39:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62739 states. [2022-07-19 12:39:29,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62739 to 61439. [2022-07-19 12:39:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61439 states, 61438 states have (on average 1.0894885901233764) internal successors, (66936), 61438 states have internal predecessors, (66936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61439 states to 61439 states and 66936 transitions. [2022-07-19 12:39:29,494 INFO L78 Accepts]: Start accepts. Automaton has 61439 states and 66936 transitions. Word has length 385 [2022-07-19 12:39:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:29,495 INFO L495 AbstractCegarLoop]: Abstraction has 61439 states and 66936 transitions. [2022-07-19 12:39:29,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 61439 states and 66936 transitions. [2022-07-19 12:39:29,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-07-19 12:39:29,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:29,502 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:29,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 12:39:29,503 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:29,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:29,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2071797125, now seen corresponding path program 1 times [2022-07-19 12:39:29,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:29,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192982341] [2022-07-19 12:39:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:29,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2022-07-19 12:39:29,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:29,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192982341] [2022-07-19 12:39:29,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192982341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:29,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:29,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:39:29,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737448385] [2022-07-19 12:39:29,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:29,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:29,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:29,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:29,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:29,630 INFO L87 Difference]: Start difference. First operand 61439 states and 66936 transitions. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:31,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:31,573 INFO L93 Difference]: Finished difference Result 140364 states and 152848 transitions. [2022-07-19 12:39:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:31,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 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 402 [2022-07-19 12:39:31,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:31,661 INFO L225 Difference]: With dead ends: 140364 [2022-07-19 12:39:31,661 INFO L226 Difference]: Without dead ends: 78496 [2022-07-19 12:39:31,690 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 [2022-07-19 12:39:31,690 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 460 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:31,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 203 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 12:39:31,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78496 states. [2022-07-19 12:39:32,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78496 to 73347. [2022-07-19 12:39:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73347 states, 73346 states have (on average 1.0878711858860741) internal successors, (79791), 73346 states have internal predecessors, (79791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:32,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73347 states to 73347 states and 79791 transitions. [2022-07-19 12:39:32,671 INFO L78 Accepts]: Start accepts. Automaton has 73347 states and 79791 transitions. Word has length 402 [2022-07-19 12:39:32,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:32,671 INFO L495 AbstractCegarLoop]: Abstraction has 73347 states and 79791 transitions. [2022-07-19 12:39:32,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:32,672 INFO L276 IsEmpty]: Start isEmpty. Operand 73347 states and 79791 transitions. [2022-07-19 12:39:32,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2022-07-19 12:39:32,679 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:32,679 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 12:39:32,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 12:39:32,680 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash -496460439, now seen corresponding path program 1 times [2022-07-19 12:39:32,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:32,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292305401] [2022-07-19 12:39:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:32,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 325 proven. 37 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-07-19 12:39:32,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:32,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292305401] [2022-07-19 12:39:32,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292305401] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:39:32,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778433238] [2022-07-19 12:39:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:32,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:39:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:39:32,832 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) [2022-07-19 12:39:32,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 12:39:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:33,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 12:39:33,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:39:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 403 proven. 82 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-19 12:39:33,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 12:39:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 403 proven. 82 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-19 12:39:33,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778433238] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 12:39:33,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 12:39:34,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-07-19 12:39:34,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958637939] [2022-07-19 12:39:34,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 12:39:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 12:39:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:34,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 12:39:34,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 12:39:34,002 INFO L87 Difference]: Start difference. First operand 73347 states and 79791 transitions. Second operand has 9 states, 9 states have (on average 81.55555555555556) internal successors, (734), 9 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:46,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:46,058 INFO L93 Difference]: Finished difference Result 197395 states and 214294 transitions. [2022-07-19 12:39:46,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 12:39:46,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 81.55555555555556) internal successors, (734), 9 states have internal predecessors, (734), 0 states have call successors, (0), 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 419 [2022-07-19 12:39:46,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:46,193 INFO L225 Difference]: With dead ends: 197395 [2022-07-19 12:39:46,193 INFO L226 Difference]: Without dead ends: 122773 [2022-07-19 12:39:46,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 849 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2022-07-19 12:39:46,210 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 10829 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 12694 mSolverCounterSat, 2112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10829 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 14806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2112 IncrementalHoareTripleChecker+Valid, 12694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:46,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10829 Valid, 375 Invalid, 14806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2112 Valid, 12694 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-07-19 12:39:46,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122773 states. [2022-07-19 12:39:47,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122773 to 95458. [2022-07-19 12:39:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95458 states, 95457 states have (on average 1.0718648187141855) internal successors, (102317), 95457 states have internal predecessors, (102317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95458 states to 95458 states and 102317 transitions. [2022-07-19 12:39:47,331 INFO L78 Accepts]: Start accepts. Automaton has 95458 states and 102317 transitions. Word has length 419 [2022-07-19 12:39:47,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:47,331 INFO L495 AbstractCegarLoop]: Abstraction has 95458 states and 102317 transitions. [2022-07-19 12:39:47,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 81.55555555555556) internal successors, (734), 9 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:47,332 INFO L276 IsEmpty]: Start isEmpty. Operand 95458 states and 102317 transitions. [2022-07-19 12:39:47,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2022-07-19 12:39:47,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:47,339 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-19 12:39:47,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 12:39:47,559 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,SelfDestructingSolverStorable12 [2022-07-19 12:39:47,560 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash 377844602, now seen corresponding path program 1 times [2022-07-19 12:39:47,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:47,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665589270] [2022-07-19 12:39:47,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:47,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:47,941 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-07-19 12:39:47,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:47,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665589270] [2022-07-19 12:39:47,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665589270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:47,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:47,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:39:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638066666] [2022-07-19 12:39:47,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:47,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:47,945 INFO L87 Difference]: Start difference. First operand 95458 states and 102317 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:49,765 INFO L93 Difference]: Finished difference Result 188359 states and 201879 transitions. [2022-07-19 12:39:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:49,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 505 [2022-07-19 12:39:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:49,868 INFO L225 Difference]: With dead ends: 188359 [2022-07-19 12:39:49,868 INFO L226 Difference]: Without dead ends: 93753 [2022-07-19 12:39:49,916 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 [2022-07-19 12:39:49,917 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 443 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:49,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 684 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1131 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 12:39:49,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93753 states. [2022-07-19 12:39:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93753 to 93324. [2022-07-19 12:39:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93324 states, 93323 states have (on average 1.0601030828413145) internal successors, (98932), 93323 states have internal predecessors, (98932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:51,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93324 states to 93324 states and 98932 transitions. [2022-07-19 12:39:51,092 INFO L78 Accepts]: Start accepts. Automaton has 93324 states and 98932 transitions. Word has length 505 [2022-07-19 12:39:51,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:51,093 INFO L495 AbstractCegarLoop]: Abstraction has 93324 states and 98932 transitions. [2022-07-19 12:39:51,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:51,093 INFO L276 IsEmpty]: Start isEmpty. Operand 93324 states and 98932 transitions. [2022-07-19 12:39:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2022-07-19 12:39:51,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:51,107 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-07-19 12:39:51,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 12:39:51,107 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:51,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:51,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1471996272, now seen corresponding path program 1 times [2022-07-19 12:39:51,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:51,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202292474] [2022-07-19 12:39:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:51,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1048 backedges. 538 proven. 0 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-07-19 12:39:51,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:51,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202292474] [2022-07-19 12:39:51,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202292474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:51,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:51,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:39:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467113955] [2022-07-19 12:39:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:51,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:39:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:39:51,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:39:51,497 INFO L87 Difference]: Start difference. First operand 93324 states and 98932 transitions. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:54,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:54,603 INFO L93 Difference]: Finished difference Result 204551 states and 216439 transitions. [2022-07-19 12:39:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:39:54,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 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 606 [2022-07-19 12:39:54,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:54,738 INFO L225 Difference]: With dead ends: 204551 [2022-07-19 12:39:54,738 INFO L226 Difference]: Without dead ends: 111229 [2022-07-19 12:39:54,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:39:54,951 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 823 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:54,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 166 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 2487 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 12:39:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111229 states. [2022-07-19 12:39:55,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111229 to 97155. [2022-07-19 12:39:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97155 states, 97154 states have (on average 1.0594211252238714) internal successors, (102927), 97154 states have internal predecessors, (102927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:56,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97155 states to 97155 states and 102927 transitions. [2022-07-19 12:39:56,093 INFO L78 Accepts]: Start accepts. Automaton has 97155 states and 102927 transitions. Word has length 606 [2022-07-19 12:39:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:56,094 INFO L495 AbstractCegarLoop]: Abstraction has 97155 states and 102927 transitions. [2022-07-19 12:39:56,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:56,094 INFO L276 IsEmpty]: Start isEmpty. Operand 97155 states and 102927 transitions. [2022-07-19 12:39:56,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2022-07-19 12:39:56,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:56,117 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:56,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 12:39:56,118 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:56,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1832945010, now seen corresponding path program 1 times [2022-07-19 12:39:56,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:56,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039060060] [2022-07-19 12:39:56,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:56,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 830 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2022-07-19 12:39:56,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:56,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039060060] [2022-07-19 12:39:56,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039060060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:56,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:56,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:39:56,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956848374] [2022-07-19 12:39:56,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:56,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:39:56,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:56,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:39:56,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:39:56,491 INFO L87 Difference]: Start difference. First operand 97155 states and 102927 transitions. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:39:57,696 INFO L93 Difference]: Finished difference Result 187486 states and 198687 transitions. [2022-07-19 12:39:57,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:39:57,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 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 696 [2022-07-19 12:39:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:39:57,792 INFO L225 Difference]: With dead ends: 187486 [2022-07-19 12:39:57,792 INFO L226 Difference]: Without dead ends: 91182 [2022-07-19 12:39:57,829 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 [2022-07-19 12:39:57,829 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 579 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:39:57,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 83 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 12:39:57,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91182 states. [2022-07-19 12:39:58,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91182 to 91168. [2022-07-19 12:39:58,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91168 states, 91167 states have (on average 1.0592319589325085) internal successors, (96567), 91167 states have internal predecessors, (96567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91168 states to 91168 states and 96567 transitions. [2022-07-19 12:39:58,956 INFO L78 Accepts]: Start accepts. Automaton has 91168 states and 96567 transitions. Word has length 696 [2022-07-19 12:39:58,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:39:58,957 INFO L495 AbstractCegarLoop]: Abstraction has 91168 states and 96567 transitions. [2022-07-19 12:39:58,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:39:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 91168 states and 96567 transitions. [2022-07-19 12:39:58,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2022-07-19 12:39:58,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:39:58,975 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:39:58,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 12:39:58,975 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:39:58,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:39:58,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1454952528, now seen corresponding path program 1 times [2022-07-19 12:39:58,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:39:58,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626062820] [2022-07-19 12:39:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:39:58,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:39:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:39:59,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 580 proven. 0 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2022-07-19 12:39:59,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:39:59,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626062820] [2022-07-19 12:39:59,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626062820] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:39:59,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:39:59,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:39:59,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621871096] [2022-07-19 12:39:59,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:39:59,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:39:59,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:39:59,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:39:59,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:39:59,398 INFO L87 Difference]: Start difference. First operand 91168 states and 96567 transitions. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:02,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:40:02,168 INFO L93 Difference]: Finished difference Result 97161 states and 102701 transitions. [2022-07-19 12:40:02,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:40:02,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 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 696 [2022-07-19 12:40:02,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:40:02,257 INFO L225 Difference]: With dead ends: 97161 [2022-07-19 12:40:02,257 INFO L226 Difference]: Without dead ends: 96734 [2022-07-19 12:40:02,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:40:02,276 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 845 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:40:02,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 165 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 12:40:02,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96734 states. [2022-07-19 12:40:03,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96734 to 91168. [2022-07-19 12:40:03,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91168 states, 91167 states have (on average 1.0591771145260895) internal successors, (96562), 91167 states have internal predecessors, (96562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91168 states to 91168 states and 96562 transitions. [2022-07-19 12:40:03,356 INFO L78 Accepts]: Start accepts. Automaton has 91168 states and 96562 transitions. Word has length 696 [2022-07-19 12:40:03,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:40:03,356 INFO L495 AbstractCegarLoop]: Abstraction has 91168 states and 96562 transitions. [2022-07-19 12:40:03,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 91168 states and 96562 transitions. [2022-07-19 12:40:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2022-07-19 12:40:03,373 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:40:03,374 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:40:03,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 12:40:03,374 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:40:03,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:40:03,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1772575023, now seen corresponding path program 1 times [2022-07-19 12:40:03,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:40:03,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957472620] [2022-07-19 12:40:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:40:03,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:40:03,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:40:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 715 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-19 12:40:03,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:40:03,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957472620] [2022-07-19 12:40:03,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957472620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:40:03,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:40:03,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:40:03,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50137902] [2022-07-19 12:40:03,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:40:03,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:40:03,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:40:03,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:40:03,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:40:03,601 INFO L87 Difference]: Start difference. First operand 91168 states and 96562 transitions. Second operand has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:05,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:40:05,368 INFO L93 Difference]: Finished difference Result 182336 states and 193144 transitions. [2022-07-19 12:40:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:40:05,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 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 728 [2022-07-19 12:40:05,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:40:05,473 INFO L225 Difference]: With dead ends: 182336 [2022-07-19 12:40:05,473 INFO L226 Difference]: Without dead ends: 92020 [2022-07-19 12:40:05,525 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 [2022-07-19 12:40:05,526 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 94 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:40:05,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 757 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 12:40:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92020 states. [2022-07-19 12:40:06,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92020 to 92019. [2022-07-19 12:40:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92019 states, 92018 states have (on average 1.0585428937816515) internal successors, (97405), 92018 states have internal predecessors, (97405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92019 states to 92019 states and 97405 transitions. [2022-07-19 12:40:06,750 INFO L78 Accepts]: Start accepts. Automaton has 92019 states and 97405 transitions. Word has length 728 [2022-07-19 12:40:06,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:40:06,751 INFO L495 AbstractCegarLoop]: Abstraction has 92019 states and 97405 transitions. [2022-07-19 12:40:06,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 92019 states and 97405 transitions. [2022-07-19 12:40:06,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2022-07-19 12:40:06,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:40:06,768 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2022-07-19 12:40:06,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 12:40:06,768 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:40:06,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:40:06,769 INFO L85 PathProgramCache]: Analyzing trace with hash -583207159, now seen corresponding path program 1 times [2022-07-19 12:40:06,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:40:06,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523735390] [2022-07-19 12:40:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:40:06,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:40:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:40:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 1006 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2022-07-19 12:40:07,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:40:07,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523735390] [2022-07-19 12:40:07,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523735390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:40:07,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:40:07,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:40:07,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128354586] [2022-07-19 12:40:07,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:40:07,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:40:07,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:40:07,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:40:07,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:40:07,164 INFO L87 Difference]: Start difference. First operand 92019 states and 97405 transitions. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:09,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:40:09,177 INFO L93 Difference]: Finished difference Result 192571 states and 204161 transitions. [2022-07-19 12:40:09,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:40:09,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 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 737 [2022-07-19 12:40:09,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:40:09,306 INFO L225 Difference]: With dead ends: 192571 [2022-07-19 12:40:09,306 INFO L226 Difference]: Without dead ends: 101404 [2022-07-19 12:40:09,334 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 [2022-07-19 12:40:09,335 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 293 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:40:09,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 176 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 12:40:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101404 states. [2022-07-19 12:40:10,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101404 to 98398. [2022-07-19 12:40:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98398 states, 98397 states have (on average 1.0591989593178655) internal successors, (104222), 98397 states have internal predecessors, (104222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98398 states to 98398 states and 104222 transitions. [2022-07-19 12:40:10,670 INFO L78 Accepts]: Start accepts. Automaton has 98398 states and 104222 transitions. Word has length 737 [2022-07-19 12:40:10,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:40:10,670 INFO L495 AbstractCegarLoop]: Abstraction has 98398 states and 104222 transitions. [2022-07-19 12:40:10,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:10,671 INFO L276 IsEmpty]: Start isEmpty. Operand 98398 states and 104222 transitions. [2022-07-19 12:40:10,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2022-07-19 12:40:10,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:40:10,690 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:40:10,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 12:40:10,691 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:40:10,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:40:10,691 INFO L85 PathProgramCache]: Analyzing trace with hash -254428374, now seen corresponding path program 1 times [2022-07-19 12:40:10,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:40:10,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620949184] [2022-07-19 12:40:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:40:10,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:40:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:40:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-19 12:40:11,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:40:11,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620949184] [2022-07-19 12:40:11,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620949184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:40:11,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:40:11,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:40:11,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916948054] [2022-07-19 12:40:11,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:40:11,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:40:11,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:40:11,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:40:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:40:11,140 INFO L87 Difference]: Start difference. First operand 98398 states and 104222 transitions. Second operand has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:14,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:40:14,126 INFO L93 Difference]: Finished difference Result 212137 states and 224263 transitions. [2022-07-19 12:40:14,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:40:14,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 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 744 [2022-07-19 12:40:14,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:40:14,280 INFO L225 Difference]: With dead ends: 212137 [2022-07-19 12:40:14,280 INFO L226 Difference]: Without dead ends: 113741 [2022-07-19 12:40:14,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:40:14,334 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 726 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 2778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:40:14,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 109 Invalid, 2778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 12:40:14,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113741 states. [2022-07-19 12:40:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113741 to 95419. [2022-07-19 12:40:15,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95419 states, 95418 states have (on average 1.0597161961055566) internal successors, (101116), 95418 states have internal predecessors, (101116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95419 states to 95419 states and 101116 transitions. [2022-07-19 12:40:15,962 INFO L78 Accepts]: Start accepts. Automaton has 95419 states and 101116 transitions. Word has length 744 [2022-07-19 12:40:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:40:15,962 INFO L495 AbstractCegarLoop]: Abstraction has 95419 states and 101116 transitions. [2022-07-19 12:40:15,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 95419 states and 101116 transitions. [2022-07-19 12:40:15,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2022-07-19 12:40:15,978 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:40:15,978 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:40:15,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 12:40:15,979 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:40:15,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:40:15,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1551862282, now seen corresponding path program 1 times [2022-07-19 12:40:15,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:40:15,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76531734] [2022-07-19 12:40:15,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:40:15,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:40:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:40:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-07-19 12:40:16,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:40:16,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76531734] [2022-07-19 12:40:16,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76531734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:40:16,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:40:16,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:40:16,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378157020] [2022-07-19 12:40:16,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:40:16,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:40:16,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:40:16,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:40:16,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:40:16,181 INFO L87 Difference]: Start difference. First operand 95419 states and 101116 transitions. Second operand has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:19,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:40:19,006 INFO L93 Difference]: Finished difference Result 210879 states and 223253 transitions. [2022-07-19 12:40:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:40:19,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 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 754 [2022-07-19 12:40:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:40:19,137 INFO L225 Difference]: With dead ends: 210879 [2022-07-19 12:40:19,138 INFO L226 Difference]: Without dead ends: 115458 [2022-07-19 12:40:19,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:40:19,187 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 948 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:40:19,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 600 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:40:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115458 states. [2022-07-19 12:40:20,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115458 to 96265. [2022-07-19 12:40:20,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96265 states, 96264 states have (on average 1.058827806864456) internal successors, (101927), 96264 states have internal predecessors, (101927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96265 states to 96265 states and 101927 transitions. [2022-07-19 12:40:20,647 INFO L78 Accepts]: Start accepts. Automaton has 96265 states and 101927 transitions. Word has length 754 [2022-07-19 12:40:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:40:20,647 INFO L495 AbstractCegarLoop]: Abstraction has 96265 states and 101927 transitions. [2022-07-19 12:40:20,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.75) internal successors, (447), 4 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 96265 states and 101927 transitions. [2022-07-19 12:40:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2022-07-19 12:40:20,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:40:20,679 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:40:20,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 12:40:20,679 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:40:20,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:40:20,680 INFO L85 PathProgramCache]: Analyzing trace with hash 448858180, now seen corresponding path program 1 times [2022-07-19 12:40:20,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:40:20,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088897324] [2022-07-19 12:40:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:40:20,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:40:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:40:20,945 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2022-07-19 12:40:20,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:40:20,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088897324] [2022-07-19 12:40:20,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088897324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:40:20,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:40:20,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:40:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011862766] [2022-07-19 12:40:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:40:20,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:40:20,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:40:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:40:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:40:20,948 INFO L87 Difference]: Start difference. First operand 96265 states and 101927 transitions. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:22,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:40:22,716 INFO L93 Difference]: Finished difference Result 182726 states and 193326 transitions. [2022-07-19 12:40:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:40:22,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 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 806 [2022-07-19 12:40:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:40:22,809 INFO L225 Difference]: With dead ends: 182726 [2022-07-19 12:40:22,810 INFO L226 Difference]: Without dead ends: 86463 [2022-07-19 12:40:22,852 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 [2022-07-19 12:40:22,853 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 454 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:40:22,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 594 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 12:40:22,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86463 states. [2022-07-19 12:40:23,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86463 to 83056. [2022-07-19 12:40:23,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83056 states, 83055 states have (on average 1.0535909939196917) internal successors, (87506), 83055 states have internal predecessors, (87506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83056 states to 83056 states and 87506 transitions. [2022-07-19 12:40:23,922 INFO L78 Accepts]: Start accepts. Automaton has 83056 states and 87506 transitions. Word has length 806 [2022-07-19 12:40:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:40:23,923 INFO L495 AbstractCegarLoop]: Abstraction has 83056 states and 87506 transitions. [2022-07-19 12:40:23,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 83056 states and 87506 transitions. [2022-07-19 12:40:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2022-07-19 12:40:23,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:40:23,952 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:40:23,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 12:40:23,952 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:40:23,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:40:23,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1623790957, now seen corresponding path program 1 times [2022-07-19 12:40:23,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:40:23,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753523680] [2022-07-19 12:40:23,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:40:23,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:40:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:40:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2004 backedges. 1497 proven. 0 refuted. 0 times theorem prover too weak. 507 trivial. 0 not checked. [2022-07-19 12:40:24,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:40:24,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753523680] [2022-07-19 12:40:24,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753523680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:40:24,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:40:24,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:40:24,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84352289] [2022-07-19 12:40:24,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:40:24,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:40:24,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:40:24,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:40:24,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:40:24,414 INFO L87 Difference]: Start difference. First operand 83056 states and 87506 transitions. Second operand has 4 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:40:26,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:40:26,658 INFO L93 Difference]: Finished difference Result 175913 states and 185277 transitions. [2022-07-19 12:40:26,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:40:26,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 0 states have call successors, (0), 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 882 [2022-07-19 12:40:26,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:40:26,762 INFO L225 Difference]: With dead ends: 175913 [2022-07-19 12:40:26,762 INFO L226 Difference]: Without dead ends: 92857 [2022-07-19 12:40:26,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:40:26,810 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 804 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 2377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:40:26,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 211 Invalid, 2377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]