./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0f55f072ecdf3d78d3ca7f1962c5c3e686ff404baddd6e7cb2257667b7a57198 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:15:00,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:15:00,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:15:00,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:15:00,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:15:00,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:15:00,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:15:00,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:15:00,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:15:00,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:15:00,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:15:00,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:15:00,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:15:00,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:15:00,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:15:00,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:15:00,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:15:00,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:15:00,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:15:00,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:15:00,178 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:15:00,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:15:00,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:15:00,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:15:00,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:15:00,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:15:00,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:15:00,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:15:00,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:15:00,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:15:00,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:15:00,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:15:00,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:15:00,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:15:00,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:15:00,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:15:00,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:15:00,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:15:00,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:15:00,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:15:00,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:15:00,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:15:00,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:15:00,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:15:00,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:15:00,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:15:00,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:15:00,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:15:00,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:15:00,232 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:15:00,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:15:00,233 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:15:00,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:15:00,234 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:15:00,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:15:00,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:15:00,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:15:00,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:15:00,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:15:00,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:15:00,235 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:15:00,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:15:00,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:15:00,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:15:00,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:15:00,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:15:00,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:15:00,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:15:00,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:15:00,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:15:00,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:15:00,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:15:00,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:15:00,239 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:15:00,239 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:15:00,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:15:00,239 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f55f072ecdf3d78d3ca7f1962c5c3e686ff404baddd6e7cb2257667b7a57198 [2022-07-12 09:15:00,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:15:00,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:15:00,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:15:00,533 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:15:00,534 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:15:00,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c [2022-07-12 09:15:00,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10a73b75/2c9ff4950e73434bbba3e94b33af1206/FLAGd40f01eee [2022-07-12 09:15:01,253 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:15:01,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c [2022-07-12 09:15:01,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10a73b75/2c9ff4950e73434bbba3e94b33af1206/FLAGd40f01eee [2022-07-12 09:15:01,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f10a73b75/2c9ff4950e73434bbba3e94b33af1206 [2022-07-12 09:15:01,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:15:01,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:15:01,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:15:01,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:15:01,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:15:01,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:15:01" (1/1) ... [2022-07-12 09:15:01,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58431cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:01, skipping insertion in model container [2022-07-12 09:15:01,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:15:01" (1/1) ... [2022-07-12 09:15:01,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:15:01,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:15:01,885 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c[11668,11681] [2022-07-12 09:15:01,903 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c[12510,12523] [2022-07-12 09:15:02,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:15:02,690 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:15:02,733 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c[11668,11681] [2022-07-12 09:15:02,736 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c[12510,12523] [2022-07-12 09:15:03,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:15:03,169 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:15:03,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03 WrapperNode [2022-07-12 09:15:03,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:15:03,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:15:03,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:15:03,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:15:03,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03" (1/1) ... [2022-07-12 09:15:03,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03" (1/1) ... [2022-07-12 09:15:03,610 INFO L137 Inliner]: procedures = 37, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5088 [2022-07-12 09:15:03,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:15:03,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:15:03,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:15:03,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:15:03,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03" (1/1) ... [2022-07-12 09:15:03,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03" (1/1) ... [2022-07-12 09:15:03,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03" (1/1) ... [2022-07-12 09:15:03,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03" (1/1) ... [2022-07-12 09:15:03,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03" (1/1) ... [2022-07-12 09:15:03,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03" (1/1) ... [2022-07-12 09:15:03,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03" (1/1) ... [2022-07-12 09:15:04,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:15:04,130 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:15:04,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:15:04,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:15:04,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03" (1/1) ... [2022-07-12 09:15:04,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:15:04,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:15:04,185 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:15:04,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:15:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:15:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:15:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:15:04,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:15:04,339 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:15:04,340 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:15:07,783 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:15:07,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:15:07,798 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:15:07,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:15:07 BoogieIcfgContainer [2022-07-12 09:15:07,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:15:07,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:15:07,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:15:07,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:15:07,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:15:01" (1/3) ... [2022-07-12 09:15:07,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd02e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:15:07, skipping insertion in model container [2022-07-12 09:15:07,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:15:03" (2/3) ... [2022-07-12 09:15:07,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd02e25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:15:07, skipping insertion in model container [2022-07-12 09:15:07,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:15:07" (3/3) ... [2022-07-12 09:15:07,808 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals+Problem12_label07.c [2022-07-12 09:15:07,820 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:15:07,821 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:15:07,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:15:07,881 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@3f028cce, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6342053 [2022-07-12 09:15:07,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:15:07,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:07,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:15:07,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:07,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:07,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:07,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:07,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2082356780, now seen corresponding path program 1 times [2022-07-12 09:15:07,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:07,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132534473] [2022-07-12 09:15:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:07,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:08,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:08,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:08,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132534473] [2022-07-12 09:15:08,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132534473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:08,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:08,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:15:08,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230806491] [2022-07-12 09:15:08,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:08,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:08,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:08,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:08,091 INFO L87 Difference]: Start difference. First operand has 911 states, 908 states have (on average 1.8997797356828194) internal successors, (1725), 910 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:11,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:11,735 INFO L93 Difference]: Finished difference Result 2554 states and 4896 transitions. [2022-07-12 09:15:11,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:11,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 09:15:11,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:11,762 INFO L225 Difference]: With dead ends: 2554 [2022-07-12 09:15:11,762 INFO L226 Difference]: Without dead ends: 1596 [2022-07-12 09:15:11,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:11,772 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 967 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 3033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:11,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 680 Invalid, 3033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-12 09:15:11,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-07-12 09:15:11,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2022-07-12 09:15:11,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.6129234629861982) internal successors, (2571), 1595 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2571 transitions. [2022-07-12 09:15:11,865 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2571 transitions. Word has length 7 [2022-07-12 09:15:11,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:11,866 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2571 transitions. [2022-07-12 09:15:11,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:11,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2571 transitions. [2022-07-12 09:15:11,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-12 09:15:11,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:11,868 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] [2022-07-12 09:15:11,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:15:11,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:11,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1592898568, now seen corresponding path program 1 times [2022-07-12 09:15:11,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:11,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314597540] [2022-07-12 09:15:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:11,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:11,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:11,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314597540] [2022-07-12 09:15:11,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314597540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:11,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:11,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:15:11,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568633873] [2022-07-12 09:15:11,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:11,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:15:11,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:11,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:15:11,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:15:11,973 INFO L87 Difference]: Start difference. First operand 1596 states and 2571 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:12,039 INFO L93 Difference]: Finished difference Result 1654 states and 2660 transitions. [2022-07-12 09:15:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:15:12,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-07-12 09:15:12,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:12,046 INFO L225 Difference]: With dead ends: 1654 [2022-07-12 09:15:12,046 INFO L226 Difference]: Without dead ends: 1596 [2022-07-12 09:15:12,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:15:12,048 INFO L413 NwaCegarLoop]: 1590 mSDtfsCounter, 3 mSDsluCounter, 4736 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6326 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:12,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6326 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:12,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-07-12 09:15:12,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 1596. [2022-07-12 09:15:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1594 states have (on average 1.5934755332496864) internal successors, (2540), 1595 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2540 transitions. [2022-07-12 09:15:12,083 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2540 transitions. Word has length 34 [2022-07-12 09:15:12,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:12,084 INFO L495 AbstractCegarLoop]: Abstraction has 1596 states and 2540 transitions. [2022-07-12 09:15:12,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2540 transitions. [2022-07-12 09:15:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 09:15:12,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:12,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:12,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:15:12,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:12,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:12,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1337087153, now seen corresponding path program 1 times [2022-07-12 09:15:12,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:12,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177182431] [2022-07-12 09:15:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:12,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:12,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:12,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177182431] [2022-07-12 09:15:12,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177182431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:12,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:12,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:15:12,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154392883] [2022-07-12 09:15:12,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:12,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:12,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:12,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:12,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:12,248 INFO L87 Difference]: Start difference. First operand 1596 states and 2540 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:12,278 INFO L93 Difference]: Finished difference Result 1698 states and 2700 transitions. [2022-07-12 09:15:12,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:12,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-07-12 09:15:12,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:12,285 INFO L225 Difference]: With dead ends: 1698 [2022-07-12 09:15:12,285 INFO L226 Difference]: Without dead ends: 1644 [2022-07-12 09:15:12,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:12,287 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 1498 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:12,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1676 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:12,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-07-12 09:15:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1642. [2022-07-12 09:15:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1640 states have (on average 1.5932926829268292) internal successors, (2613), 1641 states have internal predecessors, (2613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2613 transitions. [2022-07-12 09:15:12,320 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2613 transitions. Word has length 64 [2022-07-12 09:15:12,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:12,321 INFO L495 AbstractCegarLoop]: Abstraction has 1642 states and 2613 transitions. [2022-07-12 09:15:12,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2613 transitions. [2022-07-12 09:15:12,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 09:15:12,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:12,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:12,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:15:12,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:12,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash -119101755, now seen corresponding path program 1 times [2022-07-12 09:15:12,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:12,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362551004] [2022-07-12 09:15:12,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:12,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:12,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:12,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:12,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362551004] [2022-07-12 09:15:12,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362551004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:12,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:12,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:15:12,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413127965] [2022-07-12 09:15:12,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:12,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:15:12,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:12,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:15:12,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:15:12,404 INFO L87 Difference]: Start difference. First operand 1642 states and 2613 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:12,608 INFO L93 Difference]: Finished difference Result 2642 states and 4193 transitions. [2022-07-12 09:15:12,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:15:12,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-07-12 09:15:12,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:12,619 INFO L225 Difference]: With dead ends: 2642 [2022-07-12 09:15:12,619 INFO L226 Difference]: Without dead ends: 2542 [2022-07-12 09:15:12,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-12 09:15:12,622 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 8419 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8419 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:12,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8419 Valid, 2463 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:15:12,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2022-07-12 09:15:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 1740. [2022-07-12 09:15:12,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1738 states have (on average 1.5914844649021864) internal successors, (2766), 1739 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2766 transitions. [2022-07-12 09:15:12,677 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2766 transitions. Word has length 64 [2022-07-12 09:15:12,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:12,678 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 2766 transitions. [2022-07-12 09:15:12,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2766 transitions. [2022-07-12 09:15:12,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:15:12,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:12,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:12,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:15:12,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:12,681 INFO L85 PathProgramCache]: Analyzing trace with hash 91634997, now seen corresponding path program 1 times [2022-07-12 09:15:12,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:12,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398638647] [2022-07-12 09:15:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:12,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:12,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:12,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398638647] [2022-07-12 09:15:12,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398638647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:12,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:12,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:15:12,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122617577] [2022-07-12 09:15:12,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:12,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:12,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:12,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:12,758 INFO L87 Difference]: Start difference. First operand 1740 states and 2766 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:12,813 INFO L93 Difference]: Finished difference Result 2114 states and 3350 transitions. [2022-07-12 09:15:12,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:12,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-12 09:15:12,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:12,822 INFO L225 Difference]: With dead ends: 2114 [2022-07-12 09:15:12,822 INFO L226 Difference]: Without dead ends: 1916 [2022-07-12 09:15:12,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:12,826 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 1489 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:12,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1635 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:12,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2022-07-12 09:15:12,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1910. [2022-07-12 09:15:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1908 states have (on average 1.5849056603773586) internal successors, (3024), 1909 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 3024 transitions. [2022-07-12 09:15:12,889 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 3024 transitions. Word has length 66 [2022-07-12 09:15:12,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:12,892 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 3024 transitions. [2022-07-12 09:15:12,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 3024 transitions. [2022-07-12 09:15:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:15:12,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:12,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:12,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:15:12,896 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:12,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash 158128509, now seen corresponding path program 1 times [2022-07-12 09:15:12,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:12,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556775676] [2022-07-12 09:15:12,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:12,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:13,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:13,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556775676] [2022-07-12 09:15:13,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556775676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:13,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:13,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:15:13,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114318806] [2022-07-12 09:15:13,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:13,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:15:13,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:13,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:15:13,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:15:13,143 INFO L87 Difference]: Start difference. First operand 1910 states and 3024 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:13,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:13,343 INFO L93 Difference]: Finished difference Result 2280 states and 3594 transitions. [2022-07-12 09:15:13,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:15:13,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-12 09:15:13,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:13,354 INFO L225 Difference]: With dead ends: 2280 [2022-07-12 09:15:13,354 INFO L226 Difference]: Without dead ends: 1912 [2022-07-12 09:15:13,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:15:13,360 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 4663 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4663 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:13,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4663 Valid, 1896 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:13,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-07-12 09:15:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1910. [2022-07-12 09:15:13,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1908 states have (on average 1.5828092243186582) internal successors, (3020), 1909 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:13,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 3020 transitions. [2022-07-12 09:15:13,424 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 3020 transitions. Word has length 66 [2022-07-12 09:15:13,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:13,425 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 3020 transitions. [2022-07-12 09:15:13,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:13,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 3020 transitions. [2022-07-12 09:15:13,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:15:13,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:13,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:13,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:15:13,427 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:13,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:13,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1100417095, now seen corresponding path program 1 times [2022-07-12 09:15:13,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:13,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888497838] [2022-07-12 09:15:13,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:13,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:13,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:13,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888497838] [2022-07-12 09:15:13,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888497838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:13,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:13,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:15:13,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501323673] [2022-07-12 09:15:13,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:13,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:13,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:13,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:13,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:13,488 INFO L87 Difference]: Start difference. First operand 1910 states and 3020 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:13,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:13,561 INFO L93 Difference]: Finished difference Result 2598 states and 4070 transitions. [2022-07-12 09:15:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:13,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-12 09:15:13,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:13,571 INFO L225 Difference]: With dead ends: 2598 [2022-07-12 09:15:13,571 INFO L226 Difference]: Without dead ends: 2230 [2022-07-12 09:15:13,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:13,576 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 1502 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:13,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 1686 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:13,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2022-07-12 09:15:13,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 2228. [2022-07-12 09:15:13,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 2226 states have (on average 1.5705300988319857) internal successors, (3496), 2227 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 3496 transitions. [2022-07-12 09:15:13,657 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 3496 transitions. Word has length 66 [2022-07-12 09:15:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:13,658 INFO L495 AbstractCegarLoop]: Abstraction has 2228 states and 3496 transitions. [2022-07-12 09:15:13,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:13,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 3496 transitions. [2022-07-12 09:15:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:15:13,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:13,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:13,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:15:13,660 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:13,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:13,661 INFO L85 PathProgramCache]: Analyzing trace with hash -826729383, now seen corresponding path program 1 times [2022-07-12 09:15:13,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:13,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857312934] [2022-07-12 09:15:13,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:13,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:13,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:13,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857312934] [2022-07-12 09:15:13,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857312934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:13,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:13,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:15:13,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907386993] [2022-07-12 09:15:13,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:13,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:13,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:13,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:13,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:13,704 INFO L87 Difference]: Start difference. First operand 2228 states and 3496 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:13,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:13,815 INFO L93 Difference]: Finished difference Result 3504 states and 5418 transitions. [2022-07-12 09:15:13,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:13,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-12 09:15:13,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:13,827 INFO L225 Difference]: With dead ends: 3504 [2022-07-12 09:15:13,827 INFO L226 Difference]: Without dead ends: 2818 [2022-07-12 09:15:13,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:13,829 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1506 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:13,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1695 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:13,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2022-07-12 09:15:13,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2816. [2022-07-12 09:15:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2816 states, 2814 states have (on average 1.5493958777540866) internal successors, (4360), 2815 states have internal predecessors, (4360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2816 states to 2816 states and 4360 transitions. [2022-07-12 09:15:13,963 INFO L78 Accepts]: Start accepts. Automaton has 2816 states and 4360 transitions. Word has length 66 [2022-07-12 09:15:13,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:13,964 INFO L495 AbstractCegarLoop]: Abstraction has 2816 states and 4360 transitions. [2022-07-12 09:15:13,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:13,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2816 states and 4360 transitions. [2022-07-12 09:15:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:15:13,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:13,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:13,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:15:13,965 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:13,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash 992342265, now seen corresponding path program 1 times [2022-07-12 09:15:13,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:13,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175064703] [2022-07-12 09:15:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:13,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:13,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:13,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175064703] [2022-07-12 09:15:13,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175064703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:13,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:13,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:15:13,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976849282] [2022-07-12 09:15:13,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:13,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:13,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:13,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:13,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:13,999 INFO L87 Difference]: Start difference. First operand 2816 states and 4360 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:14,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:14,198 INFO L93 Difference]: Finished difference Result 5172 states and 7850 transitions. [2022-07-12 09:15:14,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:14,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-12 09:15:14,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:14,213 INFO L225 Difference]: With dead ends: 5172 [2022-07-12 09:15:14,213 INFO L226 Difference]: Without dead ends: 3898 [2022-07-12 09:15:14,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:14,216 INFO L413 NwaCegarLoop]: 1617 mSDtfsCounter, 1510 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:14,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1704 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:14,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2022-07-12 09:15:14,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3896. [2022-07-12 09:15:14,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 3894 states have (on average 1.5182331792501285) internal successors, (5912), 3895 states have internal predecessors, (5912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:14,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 5912 transitions. [2022-07-12 09:15:14,407 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 5912 transitions. Word has length 66 [2022-07-12 09:15:14,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:14,407 INFO L495 AbstractCegarLoop]: Abstraction has 3896 states and 5912 transitions. [2022-07-12 09:15:14,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:14,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 5912 transitions. [2022-07-12 09:15:14,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:15:14,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:14,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:14,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:15:14,409 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:14,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:14,410 INFO L85 PathProgramCache]: Analyzing trace with hash 192293446, now seen corresponding path program 1 times [2022-07-12 09:15:14,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:14,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073124910] [2022-07-12 09:15:14,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:14,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:14,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:14,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:14,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073124910] [2022-07-12 09:15:14,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073124910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:14,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:14,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:15:14,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110486712] [2022-07-12 09:15:14,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:15:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:14,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:15:14,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:15:14,467 INFO L87 Difference]: Start difference. First operand 3896 states and 5912 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:14,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:14,906 INFO L93 Difference]: Finished difference Result 5654 states and 8446 transitions. [2022-07-12 09:15:14,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:15:14,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-07-12 09:15:14,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:14,928 INFO L225 Difference]: With dead ends: 5654 [2022-07-12 09:15:14,928 INFO L226 Difference]: Without dead ends: 5652 [2022-07-12 09:15:14,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:15:14,931 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 225 mSDsluCounter, 4685 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 6291 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:14,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 6291 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2022-07-12 09:15:15,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 3992. [2022-07-12 09:15:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3992 states, 3990 states have (on average 1.5017543859649123) internal successors, (5992), 3991 states have internal predecessors, (5992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3992 states to 3992 states and 5992 transitions. [2022-07-12 09:15:15,207 INFO L78 Accepts]: Start accepts. Automaton has 3992 states and 5992 transitions. Word has length 67 [2022-07-12 09:15:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:15,207 INFO L495 AbstractCegarLoop]: Abstraction has 3992 states and 5992 transitions. [2022-07-12 09:15:15,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3992 states and 5992 transitions. [2022-07-12 09:15:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:15:15,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:15,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:15,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:15:15,209 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:15,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1338319212, now seen corresponding path program 1 times [2022-07-12 09:15:15,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:15,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799379446] [2022-07-12 09:15:15,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:15,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:15,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:15,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:15,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799379446] [2022-07-12 09:15:15,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799379446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:15,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:15,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:15:15,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750481685] [2022-07-12 09:15:15,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:15,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:15,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:15,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:15,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:15,250 INFO L87 Difference]: Start difference. First operand 3992 states and 5992 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:15,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:15,558 INFO L93 Difference]: Finished difference Result 6495 states and 9646 transitions. [2022-07-12 09:15:15,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:15,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-07-12 09:15:15,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:15,571 INFO L225 Difference]: With dead ends: 6495 [2022-07-12 09:15:15,572 INFO L226 Difference]: Without dead ends: 5116 [2022-07-12 09:15:15,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:15,576 INFO L413 NwaCegarLoop]: 1625 mSDtfsCounter, 1511 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:15,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 1708 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:15,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2022-07-12 09:15:15,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5114. [2022-07-12 09:15:15,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5114 states, 5112 states have (on average 1.482394366197183) internal successors, (7578), 5113 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:15,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5114 states to 5114 states and 7578 transitions. [2022-07-12 09:15:15,946 INFO L78 Accepts]: Start accepts. Automaton has 5114 states and 7578 transitions. Word has length 68 [2022-07-12 09:15:15,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:15,946 INFO L495 AbstractCegarLoop]: Abstraction has 5114 states and 7578 transitions. [2022-07-12 09:15:15,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:15,947 INFO L276 IsEmpty]: Start isEmpty. Operand 5114 states and 7578 transitions. [2022-07-12 09:15:15,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-12 09:15:15,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:15,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:15,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:15:15,949 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:15,949 INFO L85 PathProgramCache]: Analyzing trace with hash 467534163, now seen corresponding path program 1 times [2022-07-12 09:15:15,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:15,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638972458] [2022-07-12 09:15:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:15,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:15,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:15,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:15,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638972458] [2022-07-12 09:15:15,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638972458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:16,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:16,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:15:16,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176490014] [2022-07-12 09:15:16,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:16,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:16,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:16,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:16,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:16,002 INFO L87 Difference]: Start difference. First operand 5114 states and 7578 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:19,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:19,525 INFO L93 Difference]: Finished difference Result 8122 states and 12410 transitions. [2022-07-12 09:15:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:19,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-12 09:15:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:19,538 INFO L225 Difference]: With dead ends: 8122 [2022-07-12 09:15:19,538 INFO L226 Difference]: Without dead ends: 6618 [2022-07-12 09:15:19,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:19,541 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 1037 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:19,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 705 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 09:15:19,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6618 states. [2022-07-12 09:15:19,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6618 to 6616. [2022-07-12 09:15:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6616 states, 6614 states have (on average 1.4437556697913516) internal successors, (9549), 6615 states have internal predecessors, (9549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6616 states to 6616 states and 9549 transitions. [2022-07-12 09:15:19,876 INFO L78 Accepts]: Start accepts. Automaton has 6616 states and 9549 transitions. Word has length 82 [2022-07-12 09:15:19,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:19,877 INFO L495 AbstractCegarLoop]: Abstraction has 6616 states and 9549 transitions. [2022-07-12 09:15:19,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:19,877 INFO L276 IsEmpty]: Start isEmpty. Operand 6616 states and 9549 transitions. [2022-07-12 09:15:19,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-12 09:15:19,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:19,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:19,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:15:19,880 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:19,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:19,881 INFO L85 PathProgramCache]: Analyzing trace with hash -482219864, now seen corresponding path program 1 times [2022-07-12 09:15:19,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:19,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982641227] [2022-07-12 09:15:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:19,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 09:15:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:19,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982641227] [2022-07-12 09:15:19,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982641227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:19,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:19,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:15:19,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568562653] [2022-07-12 09:15:19,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:19,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:15:19,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:15:19,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:15:19,966 INFO L87 Difference]: Start difference. First operand 6616 states and 9549 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:21,341 INFO L93 Difference]: Finished difference Result 25188 states and 36147 transitions. [2022-07-12 09:15:21,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:15:21,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 95 [2022-07-12 09:15:21,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:21,393 INFO L225 Difference]: With dead ends: 25188 [2022-07-12 09:15:21,393 INFO L226 Difference]: Without dead ends: 21618 [2022-07-12 09:15:21,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:15:21,409 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 6639 mSDsluCounter, 1950 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6639 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:21,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6639 Valid, 3585 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:15:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21618 states. [2022-07-12 09:15:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21618 to 10184. [2022-07-12 09:15:22,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10184 states, 10182 states have (on average 1.4359654291887645) internal successors, (14621), 10183 states have internal predecessors, (14621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10184 states to 10184 states and 14621 transitions. [2022-07-12 09:15:22,192 INFO L78 Accepts]: Start accepts. Automaton has 10184 states and 14621 transitions. Word has length 95 [2022-07-12 09:15:22,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:22,192 INFO L495 AbstractCegarLoop]: Abstraction has 10184 states and 14621 transitions. [2022-07-12 09:15:22,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:22,192 INFO L276 IsEmpty]: Start isEmpty. Operand 10184 states and 14621 transitions. [2022-07-12 09:15:22,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-12 09:15:22,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:22,195 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:15:22,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:15:22,196 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:22,196 INFO L85 PathProgramCache]: Analyzing trace with hash -452697646, now seen corresponding path program 1 times [2022-07-12 09:15:22,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:22,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151686020] [2022-07-12 09:15:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:22,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:22,267 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 09:15:22,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:22,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151686020] [2022-07-12 09:15:22,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151686020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:22,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:22,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:15:22,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906761458] [2022-07-12 09:15:22,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:22,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:15:22,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:22,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:15:22,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:15:22,270 INFO L87 Difference]: Start difference. First operand 10184 states and 14621 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:23,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:23,607 INFO L93 Difference]: Finished difference Result 28756 states and 41219 transitions. [2022-07-12 09:15:23,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:15:23,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-07-12 09:15:23,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:23,665 INFO L225 Difference]: With dead ends: 28756 [2022-07-12 09:15:23,665 INFO L226 Difference]: Without dead ends: 25186 [2022-07-12 09:15:23,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:15:23,678 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 6531 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6531 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:23,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6531 Valid, 3625 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:23,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25186 states. [2022-07-12 09:15:24,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25186 to 15544. [2022-07-12 09:15:24,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15544 states, 15542 states have (on average 1.4276798352850342) internal successors, (22189), 15543 states have internal predecessors, (22189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:24,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15544 states to 15544 states and 22189 transitions. [2022-07-12 09:15:24,627 INFO L78 Accepts]: Start accepts. Automaton has 15544 states and 22189 transitions. Word has length 95 [2022-07-12 09:15:24,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:24,628 INFO L495 AbstractCegarLoop]: Abstraction has 15544 states and 22189 transitions. [2022-07-12 09:15:24,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:24,628 INFO L276 IsEmpty]: Start isEmpty. Operand 15544 states and 22189 transitions. [2022-07-12 09:15:24,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-12 09:15:24,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:24,632 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:15:24,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:15:24,632 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:24,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:24,633 INFO L85 PathProgramCache]: Analyzing trace with hash -179009934, now seen corresponding path program 1 times [2022-07-12 09:15:24,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:24,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755549387] [2022-07-12 09:15:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:24,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 09:15:24,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:24,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755549387] [2022-07-12 09:15:24,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755549387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:24,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:24,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:15:24,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406747730] [2022-07-12 09:15:24,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:24,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:15:24,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:24,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:15:24,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:15:24,719 INFO L87 Difference]: Start difference. First operand 15544 states and 22189 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:26,361 INFO L93 Difference]: Finished difference Result 32324 states and 46291 transitions. [2022-07-12 09:15:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:15:26,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 95 [2022-07-12 09:15:26,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:26,425 INFO L225 Difference]: With dead ends: 32324 [2022-07-12 09:15:26,425 INFO L226 Difference]: Without dead ends: 28754 [2022-07-12 09:15:26,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:15:26,446 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 6541 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6541 SdHoareTripleChecker+Valid, 3657 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:26,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6541 Valid, 3657 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:15:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28754 states. [2022-07-12 09:15:27,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28754 to 19112. [2022-07-12 09:15:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19112 states, 19110 states have (on average 1.426530612244898) internal successors, (27261), 19111 states have internal predecessors, (27261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:27,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19112 states to 19112 states and 27261 transitions. [2022-07-12 09:15:27,716 INFO L78 Accepts]: Start accepts. Automaton has 19112 states and 27261 transitions. Word has length 95 [2022-07-12 09:15:27,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:27,716 INFO L495 AbstractCegarLoop]: Abstraction has 19112 states and 27261 transitions. [2022-07-12 09:15:27,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand 19112 states and 27261 transitions. [2022-07-12 09:15:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-12 09:15:27,721 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:27,721 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:15:27,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:15:27,721 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:27,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1640061714, now seen corresponding path program 1 times [2022-07-12 09:15:27,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:27,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987591929] [2022-07-12 09:15:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:27,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 09:15:27,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:27,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987591929] [2022-07-12 09:15:27,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987591929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:27,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:27,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:15:27,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475757676] [2022-07-12 09:15:27,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:27,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:15:27,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:27,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:15:27,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:15:27,811 INFO L87 Difference]: Start difference. First operand 19112 states and 27261 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:29,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:29,928 INFO L93 Difference]: Finished difference Result 35892 states and 51363 transitions. [2022-07-12 09:15:29,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:15:29,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 95 [2022-07-12 09:15:29,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:29,980 INFO L225 Difference]: With dead ends: 35892 [2022-07-12 09:15:29,980 INFO L226 Difference]: Without dead ends: 32322 [2022-07-12 09:15:30,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:15:30,001 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 6612 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6612 SdHoareTripleChecker+Valid, 3623 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:30,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6612 Valid, 3623 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:30,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32322 states. [2022-07-12 09:15:31,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32322 to 22680. [2022-07-12 09:15:31,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22680 states, 22678 states have (on average 1.4257430108475173) internal successors, (32333), 22679 states have internal predecessors, (32333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:31,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22680 states to 22680 states and 32333 transitions. [2022-07-12 09:15:31,540 INFO L78 Accepts]: Start accepts. Automaton has 22680 states and 32333 transitions. Word has length 95 [2022-07-12 09:15:31,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:31,541 INFO L495 AbstractCegarLoop]: Abstraction has 22680 states and 32333 transitions. [2022-07-12 09:15:31,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 22680 states and 32333 transitions. [2022-07-12 09:15:31,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 09:15:31,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:31,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:31,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:15:31,547 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:31,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:31,548 INFO L85 PathProgramCache]: Analyzing trace with hash -906023264, now seen corresponding path program 1 times [2022-07-12 09:15:31,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:31,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354413557] [2022-07-12 09:15:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:31,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:31,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:31,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354413557] [2022-07-12 09:15:31,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354413557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:31,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:31,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:15:31,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458505859] [2022-07-12 09:15:31,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:31,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:31,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:31,592 INFO L87 Difference]: Start difference. First operand 22680 states and 32333 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:32,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:32,756 INFO L93 Difference]: Finished difference Result 36442 states and 52083 transitions. [2022-07-12 09:15:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:32,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-07-12 09:15:32,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:32,776 INFO L225 Difference]: With dead ends: 36442 [2022-07-12 09:15:32,776 INFO L226 Difference]: Without dead ends: 16808 [2022-07-12 09:15:32,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:32,799 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 54 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:32,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3146 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16808 states. [2022-07-12 09:15:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16808 to 16806. [2022-07-12 09:15:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16806 states, 16804 states have (on average 1.428231373482504) internal successors, (24000), 16805 states have internal predecessors, (24000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16806 states to 16806 states and 24000 transitions. [2022-07-12 09:15:33,850 INFO L78 Accepts]: Start accepts. Automaton has 16806 states and 24000 transitions. Word has length 97 [2022-07-12 09:15:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:33,850 INFO L495 AbstractCegarLoop]: Abstraction has 16806 states and 24000 transitions. [2022-07-12 09:15:33,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:33,851 INFO L276 IsEmpty]: Start isEmpty. Operand 16806 states and 24000 transitions. [2022-07-12 09:15:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 09:15:33,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:33,855 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:15:33,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:15:33,855 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:33,856 INFO L85 PathProgramCache]: Analyzing trace with hash -615309075, now seen corresponding path program 1 times [2022-07-12 09:15:33,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:33,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124266212] [2022-07-12 09:15:33,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:33,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:15:33,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:33,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124266212] [2022-07-12 09:15:33,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124266212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:33,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:33,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:15:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844045014] [2022-07-12 09:15:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:33,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:15:33,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:15:33,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:15:33,930 INFO L87 Difference]: Start difference. First operand 16806 states and 24000 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:36,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:36,156 INFO L93 Difference]: Finished difference Result 29298 states and 41926 transitions. [2022-07-12 09:15:36,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:15:36,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 97 [2022-07-12 09:15:36,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:36,201 INFO L225 Difference]: With dead ends: 29298 [2022-07-12 09:15:36,201 INFO L226 Difference]: Without dead ends: 26800 [2022-07-12 09:15:36,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:15:36,216 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 6588 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6588 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:36,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6588 Valid, 3608 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:15:36,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26800 states. [2022-07-12 09:15:37,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26800 to 19302. [2022-07-12 09:15:37,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19302 states, 19300 states have (on average 1.4275647668393783) internal successors, (27552), 19301 states have internal predecessors, (27552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:37,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19302 states to 19302 states and 27552 transitions. [2022-07-12 09:15:37,850 INFO L78 Accepts]: Start accepts. Automaton has 19302 states and 27552 transitions. Word has length 97 [2022-07-12 09:15:37,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:37,851 INFO L495 AbstractCegarLoop]: Abstraction has 19302 states and 27552 transitions. [2022-07-12 09:15:37,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:37,851 INFO L276 IsEmpty]: Start isEmpty. Operand 19302 states and 27552 transitions. [2022-07-12 09:15:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 09:15:37,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:37,856 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:15:37,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:15:37,857 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:37,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:37,858 INFO L85 PathProgramCache]: Analyzing trace with hash -605888281, now seen corresponding path program 1 times [2022-07-12 09:15:37,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:37,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697864510] [2022-07-12 09:15:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:37,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:37,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:37,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697864510] [2022-07-12 09:15:37,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697864510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:37,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:37,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:15:37,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714948855] [2022-07-12 09:15:37,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:37,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:37,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:37,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:37,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:37,903 INFO L87 Difference]: Start difference. First operand 19302 states and 27552 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:38,713 INFO L93 Difference]: Finished difference Result 27418 states and 39098 transitions. [2022-07-12 09:15:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:38,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-07-12 09:15:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:38,727 INFO L225 Difference]: With dead ends: 27418 [2022-07-12 09:15:38,727 INFO L226 Difference]: Without dead ends: 11192 [2022-07-12 09:15:38,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:38,741 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 48 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:38,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 3131 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:38,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11192 states. [2022-07-12 09:15:39,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11192 to 11190. [2022-07-12 09:15:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11190 states, 11188 states have (on average 1.4215230604218805) internal successors, (15904), 11189 states have internal predecessors, (15904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11190 states to 11190 states and 15904 transitions. [2022-07-12 09:15:39,410 INFO L78 Accepts]: Start accepts. Automaton has 11190 states and 15904 transitions. Word has length 98 [2022-07-12 09:15:39,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:39,410 INFO L495 AbstractCegarLoop]: Abstraction has 11190 states and 15904 transitions. [2022-07-12 09:15:39,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 11190 states and 15904 transitions. [2022-07-12 09:15:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 09:15:39,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:39,413 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:15:39,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:15:39,414 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:39,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:39,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1773467421, now seen corresponding path program 1 times [2022-07-12 09:15:39,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:39,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244629378] [2022-07-12 09:15:39,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:39,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:39,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:39,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244629378] [2022-07-12 09:15:39,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244629378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:39,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:39,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:15:39,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544844676] [2022-07-12 09:15:39,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:39,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:39,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:39,451 INFO L87 Difference]: Start difference. First operand 11190 states and 15904 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:39,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:39,817 INFO L93 Difference]: Finished difference Result 15250 states and 21626 transitions. [2022-07-12 09:15:39,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:39,818 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-07-12 09:15:39,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:39,827 INFO L225 Difference]: With dead ends: 15250 [2022-07-12 09:15:39,828 INFO L226 Difference]: Without dead ends: 7136 [2022-07-12 09:15:39,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:39,838 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 44 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3116 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:39,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3116 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:39,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7136 states. [2022-07-12 09:15:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7136 to 7134. [2022-07-12 09:15:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7134 states, 7132 states have (on average 1.4206393718452046) internal successors, (10132), 7133 states have internal predecessors, (10132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7134 states to 7134 states and 10132 transitions. [2022-07-12 09:15:40,200 INFO L78 Accepts]: Start accepts. Automaton has 7134 states and 10132 transitions. Word has length 98 [2022-07-12 09:15:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:40,200 INFO L495 AbstractCegarLoop]: Abstraction has 7134 states and 10132 transitions. [2022-07-12 09:15:40,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 7134 states and 10132 transitions. [2022-07-12 09:15:40,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 09:15:40,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:40,203 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:15:40,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:15:40,203 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:40,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:40,204 INFO L85 PathProgramCache]: Analyzing trace with hash -934897581, now seen corresponding path program 1 times [2022-07-12 09:15:40,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:40,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279588328] [2022-07-12 09:15:40,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:40,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:40,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:40,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279588328] [2022-07-12 09:15:40,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279588328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:15:40,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:15:40,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:15:40,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71324435] [2022-07-12 09:15:40,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:15:40,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:15:40,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:15:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:40,252 INFO L87 Difference]: Start difference. First operand 7134 states and 10132 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:40,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:40,477 INFO L93 Difference]: Finished difference Result 9166 states and 12968 transitions. [2022-07-12 09:15:40,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:15:40,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-07-12 09:15:40,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:40,483 INFO L225 Difference]: With dead ends: 9166 [2022-07-12 09:15:40,483 INFO L226 Difference]: Without dead ends: 5108 [2022-07-12 09:15:40,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:15:40,488 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 40 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3101 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:40,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 3101 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:15:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5108 states. [2022-07-12 09:15:40,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5108 to 5106. [2022-07-12 09:15:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5106 states, 5104 states have (on average 1.4247648902821317) internal successors, (7272), 5105 states have internal predecessors, (7272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5106 states to 5106 states and 7272 transitions. [2022-07-12 09:15:40,683 INFO L78 Accepts]: Start accepts. Automaton has 5106 states and 7272 transitions. Word has length 98 [2022-07-12 09:15:40,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:40,683 INFO L495 AbstractCegarLoop]: Abstraction has 5106 states and 7272 transitions. [2022-07-12 09:15:40,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:40,684 INFO L276 IsEmpty]: Start isEmpty. Operand 5106 states and 7272 transitions. [2022-07-12 09:15:40,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 09:15:40,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:40,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:15:40,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:15:40,685 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:40,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1022016375, now seen corresponding path program 1 times [2022-07-12 09:15:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:40,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028183546] [2022-07-12 09:15:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:40,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:40,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:40,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028183546] [2022-07-12 09:15:40,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028183546] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:15:40,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904001640] [2022-07-12 09:15:40,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:40,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:15:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:15:40,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:15:40,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:15:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:41,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 09:15:41,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:15:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:15:41,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:15:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:15:41,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904001640] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:15:41,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:15:41,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-12 09:15:41,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858921907] [2022-07-12 09:15:41,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:15:41,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 09:15:41,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:41,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 09:15:41,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-12 09:15:41,548 INFO L87 Difference]: Start difference. First operand 5106 states and 7272 transitions. Second operand has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:46,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:15:46,373 INFO L93 Difference]: Finished difference Result 30282 states and 41456 transitions. [2022-07-12 09:15:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-07-12 09:15:46,375 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 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 98 [2022-07-12 09:15:46,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:15:46,405 INFO L225 Difference]: With dead ends: 30282 [2022-07-12 09:15:46,405 INFO L226 Difference]: Without dead ends: 28252 [2022-07-12 09:15:46,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1175, Invalid=5467, Unknown=0, NotChecked=0, Total=6642 [2022-07-12 09:15:46,415 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 17011 mSDsluCounter, 5443 mSDsCounter, 0 mSdLazyCounter, 1154 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17011 SdHoareTripleChecker+Valid, 7017 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:15:46,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17011 Valid, 7017 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1154 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:15:46,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28252 states. [2022-07-12 09:15:48,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28252 to 20353. [2022-07-12 09:15:48,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20353 states, 20351 states have (on average 1.344258267407007) internal successors, (27357), 20352 states have internal predecessors, (27357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20353 states to 20353 states and 27357 transitions. [2022-07-12 09:15:48,131 INFO L78 Accepts]: Start accepts. Automaton has 20353 states and 27357 transitions. Word has length 98 [2022-07-12 09:15:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:15:48,131 INFO L495 AbstractCegarLoop]: Abstraction has 20353 states and 27357 transitions. [2022-07-12 09:15:48,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.38888888888889) internal successors, (277), 18 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:15:48,131 INFO L276 IsEmpty]: Start isEmpty. Operand 20353 states and 27357 transitions. [2022-07-12 09:15:48,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 09:15:48,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:15:48,133 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:15:48,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 09:15:48,333 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,SelfDestructingSolverStorable21 [2022-07-12 09:15:48,334 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:15:48,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:15:48,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1244176043, now seen corresponding path program 1 times [2022-07-12 09:15:48,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:15:48,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970953000] [2022-07-12 09:15:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:48,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:15:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:48,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:15:48,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970953000] [2022-07-12 09:15:48,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970953000] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:15:48,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076398562] [2022-07-12 09:15:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:15:48,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:15:48,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:15:48,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:15:48,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:15:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:15:48,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-12 09:15:48,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:15:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:49,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:15:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:15:49,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076398562] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:15:49,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:15:49,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2022-07-12 09:15:49,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649456442] [2022-07-12 09:15:49,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:15:49,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 09:15:49,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:15:49,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 09:15:49,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-07-12 09:15:49,812 INFO L87 Difference]: Start difference. First operand 20353 states and 27357 transitions. Second operand has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:16:20,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:16:20,991 INFO L93 Difference]: Finished difference Result 231706 states and 303053 transitions. [2022-07-12 09:16:20,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-07-12 09:16:20,992 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 0 states have call successors, (0), 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 99 [2022-07-12 09:16:20,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:16:21,564 INFO L225 Difference]: With dead ends: 231706 [2022-07-12 09:16:21,564 INFO L226 Difference]: Without dead ends: 214707 [2022-07-12 09:16:21,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8067 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3510, Invalid=19140, Unknown=0, NotChecked=0, Total=22650 [2022-07-12 09:16:21,641 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 21203 mSDsluCounter, 9468 mSDsCounter, 0 mSdLazyCounter, 2335 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21203 SdHoareTripleChecker+Valid, 11108 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 2335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:16:21,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21203 Valid, 11108 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 2335 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:16:21,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214707 states. [2022-07-12 09:16:33,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214707 to 97420. [2022-07-12 09:16:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97420 states, 97418 states have (on average 1.3012687593668522) internal successors, (126767), 97419 states have internal predecessors, (126767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:16:34,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97420 states to 97420 states and 126767 transitions. [2022-07-12 09:16:34,344 INFO L78 Accepts]: Start accepts. Automaton has 97420 states and 126767 transitions. Word has length 99 [2022-07-12 09:16:34,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:16:34,344 INFO L495 AbstractCegarLoop]: Abstraction has 97420 states and 126767 transitions. [2022-07-12 09:16:34,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.433333333333334) internal successors, (253), 29 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:16:34,344 INFO L276 IsEmpty]: Start isEmpty. Operand 97420 states and 126767 transitions. [2022-07-12 09:16:34,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 09:16:34,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:16:34,347 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 09:16:34,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:16:34,559 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,SelfDestructingSolverStorable22 [2022-07-12 09:16:34,560 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:16:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:16:34,561 INFO L85 PathProgramCache]: Analyzing trace with hash -276405577, now seen corresponding path program 1 times [2022-07-12 09:16:34,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:16:34,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313367566] [2022-07-12 09:16:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:16:34,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:16:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:16:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:16:34,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:16:34,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313367566] [2022-07-12 09:16:34,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313367566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:16:34,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:16:34,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:16:34,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549035724] [2022-07-12 09:16:34,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:16:34,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:16:34,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:16:34,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:16:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:16:34,629 INFO L87 Difference]: Start difference. First operand 97420 states and 126767 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)