./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.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 b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:37:27,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:37:27,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:37:27,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:37:27,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:37:27,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:37:27,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:37:27,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:37:27,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:37:27,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:37:27,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:37:27,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:37:27,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:37:27,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:37:27,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:37:27,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:37:27,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:37:27,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:37:27,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:37:27,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:37:27,153 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:37:27,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:37:27,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:37:27,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:37:27,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:37:27,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:37:27,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:37:27,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:37:27,161 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:37:27,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:37:27,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:37:27,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:37:27,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:37:27,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:37:27,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:37:27,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:37:27,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:37:27,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:37:27,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:37:27,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:37:27,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:37:27,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:37:27,170 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:37:27,199 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:37:27,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:37:27,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:37:27,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:37:27,201 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:37:27,201 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:37:27,202 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:37:27,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:37:27,202 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:37:27,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:37:27,203 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:37:27,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:37:27,203 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:37:27,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:37:27,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:37:27,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:37:27,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:37:27,204 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:37:27,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:37:27,204 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:37:27,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:37:27,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:37:27,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:37:27,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:37:27,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:37:27,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:37:27,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:37:27,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:37:27,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:37:27,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:37:27,207 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:37:27,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:37:27,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:37:27,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b08ac6f553c71235d6c242059db3dcace1924bc9c3a272f401632c3f1b127664 [2022-07-19 20:37:27,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:37:27,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:37:27,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:37:27,439 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:37:27,441 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:37:27,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-07-19 20:37:27,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ccadab16/f2b43daf98c44a6498d25d84eb263d84/FLAGc8e53918a [2022-07-19 20:37:27,970 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:37:27,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-07-19 20:37:27,989 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ccadab16/f2b43daf98c44a6498d25d84eb263d84/FLAGc8e53918a [2022-07-19 20:37:28,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ccadab16/f2b43daf98c44a6498d25d84eb263d84 [2022-07-19 20:37:28,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:37:28,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:37:28,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:37:28,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:37:28,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:37:28,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3924601e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28, skipping insertion in model container [2022-07-19 20:37:28,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:37:28,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:37:28,205 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/pc_sfifo_3.cil+token_ring.07.cil-1.c[911,924] [2022-07-19 20:37:28,272 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/pc_sfifo_3.cil+token_ring.07.cil-1.c[8416,8429] [2022-07-19 20:37:28,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:37:28,357 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:37:28,382 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/pc_sfifo_3.cil+token_ring.07.cil-1.c[911,924] [2022-07-19 20:37:28,394 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/pc_sfifo_3.cil+token_ring.07.cil-1.c[8416,8429] [2022-07-19 20:37:28,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:37:28,469 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:37:28,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28 WrapperNode [2022-07-19 20:37:28,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:37:28,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:37:28,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:37:28,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:37:28,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,526 INFO L137 Inliner]: procedures = 69, calls = 82, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 788 [2022-07-19 20:37:28,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:37:28,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:37:28,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:37:28,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:37:28,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:37:28,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:37:28,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:37:28,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:37:28,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28" (1/1) ... [2022-07-19 20:37:28,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:37:28,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:37:28,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 20:37:28,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 20:37:28,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:37:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:37:28,658 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:37:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-19 20:37:28,658 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-19 20:37:28,658 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:37:28,659 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:37:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:37:28,659 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:37:28,659 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-19 20:37:28,659 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-19 20:37:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:37:28,660 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:37:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:37:28,660 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:37:28,660 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-19 20:37:28,660 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-19 20:37:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-19 20:37:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-19 20:37:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-19 20:37:28,661 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-19 20:37:28,661 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:37:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:37:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:37:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:37:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:37:28,662 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-19 20:37:28,662 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-19 20:37:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:37:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:37:28,663 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:37:28,663 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:37:28,767 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:37:28,784 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:37:29,286 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-19 20:37:29,287 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-19 20:37:29,341 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:37:29,348 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:37:29,356 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-19 20:37:29,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:37:29 BoogieIcfgContainer [2022-07-19 20:37:29,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:37:29,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:37:29,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:37:29,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:37:29,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:37:28" (1/3) ... [2022-07-19 20:37:29,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2228ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:37:29, skipping insertion in model container [2022-07-19 20:37:29,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:37:28" (2/3) ... [2022-07-19 20:37:29,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2228ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:37:29, skipping insertion in model container [2022-07-19 20:37:29,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:37:29" (3/3) ... [2022-07-19 20:37:29,381 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-1.c [2022-07-19 20:37:29,391 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:37:29,391 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:37:29,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:37:29,431 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@6de0a628, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3327a208 [2022-07-19 20:37:29,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:37:29,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 320 states have (on average 1.6125) internal successors, (516), 326 states have internal predecessors, (516), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-19 20:37:29,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:37:29,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:29,445 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] [2022-07-19 20:37:29,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:29,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:29,449 INFO L85 PathProgramCache]: Analyzing trace with hash -334337363, now seen corresponding path program 1 times [2022-07-19 20:37:29,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:29,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409780495] [2022-07-19 20:37:29,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:29,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:29,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:29,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:29,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:29,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:37:29,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:29,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:37:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:29,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:37:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:29,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:29,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409780495] [2022-07-19 20:37:29,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409780495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:29,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:29,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:37:29,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421491865] [2022-07-19 20:37:29,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:29,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:37:29,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:37:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:37:29,701 INFO L87 Difference]: Start difference. First operand has 374 states, 320 states have (on average 1.6125) internal successors, (516), 326 states have internal predecessors, (516), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:37:30,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:30,326 INFO L93 Difference]: Finished difference Result 743 states and 1170 transitions. [2022-07-19 20:37:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 20:37:30,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:37:30,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:30,337 INFO L225 Difference]: With dead ends: 743 [2022-07-19 20:37:30,338 INFO L226 Difference]: Without dead ends: 382 [2022-07-19 20:37:30,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:37:30,344 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 586 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:30,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1507 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:37:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-19 20:37:30,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 364. [2022-07-19 20:37:30,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 312 states have (on average 1.5224358974358974) internal successors, (475), 316 states have internal predecessors, (475), 37 states have call successors, (37), 14 states have call predecessors, (37), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-19 20:37:30,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 547 transitions. [2022-07-19 20:37:30,396 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 547 transitions. Word has length 65 [2022-07-19 20:37:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:30,396 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 547 transitions. [2022-07-19 20:37:30,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:37:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 547 transitions. [2022-07-19 20:37:30,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:37:30,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:30,399 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] [2022-07-19 20:37:30,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:37:30,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:30,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:30,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1721122773, now seen corresponding path program 1 times [2022-07-19 20:37:30,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:30,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016246170] [2022-07-19 20:37:30,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:30,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:30,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:30,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:30,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:30,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:30,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:37:30,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:37:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:30,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:37:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:30,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:30,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016246170] [2022-07-19 20:37:30,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016246170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:30,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:30,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:37:30,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129927082] [2022-07-19 20:37:30,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:30,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:37:30,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:30,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:37:30,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:37:30,559 INFO L87 Difference]: Start difference. First operand 364 states and 547 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:37:31,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:31,335 INFO L93 Difference]: Finished difference Result 619 states and 916 transitions. [2022-07-19 20:37:31,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:37:31,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:37:31,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:31,338 INFO L225 Difference]: With dead ends: 619 [2022-07-19 20:37:31,338 INFO L226 Difference]: Without dead ends: 515 [2022-07-19 20:37:31,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:37:31,340 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 974 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:31,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1812 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:37:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-07-19 20:37:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 476. [2022-07-19 20:37:31,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 402 states have (on average 1.4950248756218905) internal successors, (601), 408 states have internal predecessors, (601), 50 states have call successors, (50), 21 states have call predecessors, (50), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2022-07-19 20:37:31,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 704 transitions. [2022-07-19 20:37:31,364 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 704 transitions. Word has length 65 [2022-07-19 20:37:31,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:31,364 INFO L495 AbstractCegarLoop]: Abstraction has 476 states and 704 transitions. [2022-07-19 20:37:31,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:37:31,365 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 704 transitions. [2022-07-19 20:37:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:37:31,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:31,366 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] [2022-07-19 20:37:31,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:37:31,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash -42234133, now seen corresponding path program 1 times [2022-07-19 20:37:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:31,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718535099] [2022-07-19 20:37:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:31,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:31,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:31,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:37:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:37:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:31,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:37:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:31,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:31,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718535099] [2022-07-19 20:37:31,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718535099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:31,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:31,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:37:31,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843119076] [2022-07-19 20:37:31,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:31,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:37:31,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:31,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:37:31,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:37:31,481 INFO L87 Difference]: Start difference. First operand 476 states and 704 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:37:32,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:32,296 INFO L93 Difference]: Finished difference Result 873 states and 1269 transitions. [2022-07-19 20:37:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:37:32,297 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:37:32,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:32,303 INFO L225 Difference]: With dead ends: 873 [2022-07-19 20:37:32,303 INFO L226 Difference]: Without dead ends: 664 [2022-07-19 20:37:32,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-19 20:37:32,311 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1064 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1256 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:32,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 2219 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1256 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:37:32,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-07-19 20:37:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 588. [2022-07-19 20:37:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 492 states have (on average 1.475609756097561) internal successors, (726), 500 states have internal predecessors, (726), 63 states have call successors, (63), 28 states have call predecessors, (63), 31 states have return successors, (74), 63 states have call predecessors, (74), 61 states have call successors, (74) [2022-07-19 20:37:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 863 transitions. [2022-07-19 20:37:32,355 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 863 transitions. Word has length 65 [2022-07-19 20:37:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:32,355 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 863 transitions. [2022-07-19 20:37:32,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:37:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 863 transitions. [2022-07-19 20:37:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:37:32,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:32,364 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] [2022-07-19 20:37:32,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:37:32,365 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:32,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:32,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2070820243, now seen corresponding path program 1 times [2022-07-19 20:37:32,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:32,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661242125] [2022-07-19 20:37:32,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:32,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:37:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:37:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:37:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:32,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:32,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661242125] [2022-07-19 20:37:32,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661242125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:32,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:32,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:37:32,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817312312] [2022-07-19 20:37:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:32,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:37:32,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:32,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:37:32,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:37:32,498 INFO L87 Difference]: Start difference. First operand 588 states and 863 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-19 20:37:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:33,869 INFO L93 Difference]: Finished difference Result 2134 states and 3060 transitions. [2022-07-19 20:37:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:37:33,870 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-19 20:37:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:33,878 INFO L225 Difference]: With dead ends: 2134 [2022-07-19 20:37:33,879 INFO L226 Difference]: Without dead ends: 1801 [2022-07-19 20:37:33,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:37:33,887 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 2953 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2971 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:33,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2971 Valid, 2565 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:37:33,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2022-07-19 20:37:33,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1641. [2022-07-19 20:37:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1340 states have (on average 1.3970149253731343) internal successors, (1872), 1363 states have internal predecessors, (1872), 173 states have call successors, (173), 111 states have call predecessors, (173), 126 states have return successors, (207), 169 states have call predecessors, (207), 171 states have call successors, (207) [2022-07-19 20:37:33,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2252 transitions. [2022-07-19 20:37:33,966 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2252 transitions. Word has length 65 [2022-07-19 20:37:33,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:33,966 INFO L495 AbstractCegarLoop]: Abstraction has 1641 states and 2252 transitions. [2022-07-19 20:37:33,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-19 20:37:33,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2252 transitions. [2022-07-19 20:37:33,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:37:33,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:33,967 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] [2022-07-19 20:37:33,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:37:33,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:33,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:33,968 INFO L85 PathProgramCache]: Analyzing trace with hash 160145276, now seen corresponding path program 1 times [2022-07-19 20:37:33,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:33,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343120576] [2022-07-19 20:37:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:37:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 20:37:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:37:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:34,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:34,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343120576] [2022-07-19 20:37:34,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343120576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:34,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:34,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:37:34,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319325441] [2022-07-19 20:37:34,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:34,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:37:34,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:34,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:37:34,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:37:34,055 INFO L87 Difference]: Start difference. First operand 1641 states and 2252 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:37:34,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:34,718 INFO L93 Difference]: Finished difference Result 3257 states and 4472 transitions. [2022-07-19 20:37:34,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:37:34,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 20:37:34,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:34,725 INFO L225 Difference]: With dead ends: 3257 [2022-07-19 20:37:34,725 INFO L226 Difference]: Without dead ends: 1877 [2022-07-19 20:37:34,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:37:34,728 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 682 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:34,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 2146 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:37:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-07-19 20:37:34,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1711. [2022-07-19 20:37:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1396 states have (on average 1.3810888252148996) internal successors, (1928), 1419 states have internal predecessors, (1928), 173 states have call successors, (173), 111 states have call predecessors, (173), 140 states have return successors, (221), 183 states have call predecessors, (221), 171 states have call successors, (221) [2022-07-19 20:37:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 2322 transitions. [2022-07-19 20:37:34,806 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 2322 transitions. Word has length 66 [2022-07-19 20:37:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:34,807 INFO L495 AbstractCegarLoop]: Abstraction has 1711 states and 2322 transitions. [2022-07-19 20:37:34,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:37:34,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 2322 transitions. [2022-07-19 20:37:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:37:34,808 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:34,808 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] [2022-07-19 20:37:34,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:37:34,808 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:34,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:34,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1226058118, now seen corresponding path program 1 times [2022-07-19 20:37:34,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:34,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79204607] [2022-07-19 20:37:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:34,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:37:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 20:37:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:37:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:34,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:34,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:34,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79204607] [2022-07-19 20:37:34,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79204607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:34,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:34,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:37:34,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672582218] [2022-07-19 20:37:34,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:34,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:37:34,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:34,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:37:34,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:37:34,896 INFO L87 Difference]: Start difference. First operand 1711 states and 2322 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:37:35,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:35,687 INFO L93 Difference]: Finished difference Result 3325 states and 4495 transitions. [2022-07-19 20:37:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:37:35,688 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 20:37:35,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:35,694 INFO L225 Difference]: With dead ends: 3325 [2022-07-19 20:37:35,694 INFO L226 Difference]: Without dead ends: 1875 [2022-07-19 20:37:35,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:37:35,698 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 466 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1305 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:35,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 2388 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1305 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:37:35,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1875 states. [2022-07-19 20:37:35,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1875 to 1751. [2022-07-19 20:37:35,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1751 states, 1428 states have (on average 1.3683473389355743) internal successors, (1954), 1451 states have internal predecessors, (1954), 173 states have call successors, (173), 111 states have call predecessors, (173), 148 states have return successors, (229), 191 states have call predecessors, (229), 171 states have call successors, (229) [2022-07-19 20:37:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2356 transitions. [2022-07-19 20:37:35,753 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2356 transitions. Word has length 66 [2022-07-19 20:37:35,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:35,753 INFO L495 AbstractCegarLoop]: Abstraction has 1751 states and 2356 transitions. [2022-07-19 20:37:35,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:37:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2356 transitions. [2022-07-19 20:37:35,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:37:35,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:35,754 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] [2022-07-19 20:37:35,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:37:35,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:35,755 INFO L85 PathProgramCache]: Analyzing trace with hash 2039549880, now seen corresponding path program 1 times [2022-07-19 20:37:35,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:35,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884004476] [2022-07-19 20:37:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:35,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:35,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:35,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:37:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:35,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 20:37:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:35,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:37:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:35,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:35,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884004476] [2022-07-19 20:37:35,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884004476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:35,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:35,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:37:35,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022047471] [2022-07-19 20:37:35,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:35,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:37:35,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:35,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:37:35,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:37:35,841 INFO L87 Difference]: Start difference. First operand 1751 states and 2356 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 20:37:37,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:37,338 INFO L93 Difference]: Finished difference Result 5485 states and 7458 transitions. [2022-07-19 20:37:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:37:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-19 20:37:37,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:37,349 INFO L225 Difference]: With dead ends: 5485 [2022-07-19 20:37:37,349 INFO L226 Difference]: Without dead ends: 2148 [2022-07-19 20:37:37,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:37:37,358 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 3039 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 1687 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3058 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 1687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:37,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3058 Valid, 2603 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 1687 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:37:37,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2022-07-19 20:37:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 1952. [2022-07-19 20:37:37,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1559 states have (on average 1.3290570878768442) internal successors, (2072), 1584 states have internal predecessors, (2072), 213 states have call successors, (213), 139 states have call predecessors, (213), 178 states have return successors, (273), 231 states have call predecessors, (273), 211 states have call successors, (273) [2022-07-19 20:37:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2558 transitions. [2022-07-19 20:37:37,429 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2558 transitions. Word has length 66 [2022-07-19 20:37:37,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:37,429 INFO L495 AbstractCegarLoop]: Abstraction has 1952 states and 2558 transitions. [2022-07-19 20:37:37,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 20:37:37,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2558 transitions. [2022-07-19 20:37:37,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:37:37,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:37,434 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 20:37:37,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:37:37,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:37,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:37,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1663597100, now seen corresponding path program 1 times [2022-07-19 20:37:37,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:37,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241295461] [2022-07-19 20:37:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:37,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:37,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:37,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:37:37,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:37,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:37:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:37:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:37,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:37:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:37,508 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:37:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:37,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241295461] [2022-07-19 20:37:37,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241295461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:37,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:37,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:37:37,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420067120] [2022-07-19 20:37:37,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:37,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:37:37,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:37:37,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:37:37,510 INFO L87 Difference]: Start difference. First operand 1952 states and 2558 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:37:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:38,245 INFO L93 Difference]: Finished difference Result 3489 states and 4546 transitions. [2022-07-19 20:37:38,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 20:37:38,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-19 20:37:38,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:38,252 INFO L225 Difference]: With dead ends: 3489 [2022-07-19 20:37:38,252 INFO L226 Difference]: Without dead ends: 2036 [2022-07-19 20:37:38,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-07-19 20:37:38,255 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 1079 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:38,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 1903 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:37:38,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-07-19 20:37:38,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1731. [2022-07-19 20:37:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1391 states have (on average 1.3306973400431343) internal successors, (1851), 1411 states have internal predecessors, (1851), 185 states have call successors, (185), 120 states have call predecessors, (185), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-07-19 20:37:38,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2269 transitions. [2022-07-19 20:37:38,337 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2269 transitions. Word has length 91 [2022-07-19 20:37:38,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:38,338 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2269 transitions. [2022-07-19 20:37:38,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:37:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2269 transitions. [2022-07-19 20:37:38,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:37:38,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:38,339 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 20:37:38,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:37:38,340 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:38,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash -692208150, now seen corresponding path program 1 times [2022-07-19 20:37:38,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:38,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863111609] [2022-07-19 20:37:38,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:38,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:38,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:38,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:37:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:37:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:37:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:37:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:37:38,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:38,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863111609] [2022-07-19 20:37:38,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863111609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:38,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:38,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:38,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194360850] [2022-07-19 20:37:38,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:38,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:38,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:38,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:38,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:38,416 INFO L87 Difference]: Start difference. First operand 1731 states and 2269 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-19 20:37:38,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:38,664 INFO L93 Difference]: Finished difference Result 3307 states and 4329 transitions. [2022-07-19 20:37:38,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 20:37:38,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-19 20:37:38,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:38,673 INFO L225 Difference]: With dead ends: 3307 [2022-07-19 20:37:38,673 INFO L226 Difference]: Without dead ends: 1838 [2022-07-19 20:37:38,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-07-19 20:37:38,679 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1144 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:38,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1203 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 20:37:38,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2022-07-19 20:37:38,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1731. [2022-07-19 20:37:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1391 states have (on average 1.3048166786484543) internal successors, (1815), 1411 states have internal predecessors, (1815), 185 states have call successors, (185), 120 states have call predecessors, (185), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-07-19 20:37:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2233 transitions. [2022-07-19 20:37:38,736 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2233 transitions. Word has length 91 [2022-07-19 20:37:38,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:38,737 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2233 transitions. [2022-07-19 20:37:38,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-19 20:37:38,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2233 transitions. [2022-07-19 20:37:38,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 20:37:38,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:38,738 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] [2022-07-19 20:37:38,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:37:38,738 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1486977360, now seen corresponding path program 1 times [2022-07-19 20:37:38,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:38,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123435526] [2022-07-19 20:37:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:38,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:37:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:37:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:37:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:37:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:37:38,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 20:37:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:37:38,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:38,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123435526] [2022-07-19 20:37:38,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123435526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:38,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:38,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:37:38,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781087136] [2022-07-19 20:37:38,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:38,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:37:38,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:38,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:37:38,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:37:38,853 INFO L87 Difference]: Start difference. First operand 1731 states and 2233 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:37:39,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:39,846 INFO L93 Difference]: Finished difference Result 4157 states and 5338 transitions. [2022-07-19 20:37:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 20:37:39,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-19 20:37:39,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:39,872 INFO L225 Difference]: With dead ends: 4157 [2022-07-19 20:37:39,872 INFO L226 Difference]: Without dead ends: 2533 [2022-07-19 20:37:39,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-19 20:37:39,901 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 2020 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:39,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 1717 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:37:39,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2022-07-19 20:37:40,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2338. [2022-07-19 20:37:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1844 states have (on average 1.2711496746203905) internal successors, (2344), 1879 states have internal predecessors, (2344), 262 states have call successors, (262), 168 states have call predecessors, (262), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-07-19 20:37:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2972 transitions. [2022-07-19 20:37:40,034 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2972 transitions. Word has length 92 [2022-07-19 20:37:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:40,035 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2972 transitions. [2022-07-19 20:37:40,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:37:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2972 transitions. [2022-07-19 20:37:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:37:40,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:40,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:40,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:37:40,037 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:40,039 INFO L85 PathProgramCache]: Analyzing trace with hash 330043274, now seen corresponding path program 1 times [2022-07-19 20:37:40,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:40,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672486284] [2022-07-19 20:37:40,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:40,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:40,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:40,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:40,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:40,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:37:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:37:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:37:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:40,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:40,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672486284] [2022-07-19 20:37:40,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672486284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:40,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:40,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:37:40,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395095155] [2022-07-19 20:37:40,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:40,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:37:40,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:40,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:37:40,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:37:40,106 INFO L87 Difference]: Start difference. First operand 2338 states and 2972 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:40,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:40,899 INFO L93 Difference]: Finished difference Result 2671 states and 3504 transitions. [2022-07-19 20:37:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:37:40,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:37:40,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:40,908 INFO L225 Difference]: With dead ends: 2671 [2022-07-19 20:37:40,909 INFO L226 Difference]: Without dead ends: 2425 [2022-07-19 20:37:40,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:37:40,912 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 765 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:40,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1022 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:37:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-07-19 20:37:41,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2338. [2022-07-19 20:37:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2338 states, 1844 states have (on average 1.2706073752711498) internal successors, (2343), 1879 states have internal predecessors, (2343), 262 states have call successors, (262), 168 states have call predecessors, (262), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-07-19 20:37:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 2971 transitions. [2022-07-19 20:37:41,042 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 2971 transitions. Word has length 123 [2022-07-19 20:37:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:41,042 INFO L495 AbstractCegarLoop]: Abstraction has 2338 states and 2971 transitions. [2022-07-19 20:37:41,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:41,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 2971 transitions. [2022-07-19 20:37:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:37:41,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:41,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:41,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:37:41,045 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:41,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1598888952, now seen corresponding path program 1 times [2022-07-19 20:37:41,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:41,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646005960] [2022-07-19 20:37:41,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:41,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:37:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:41,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:37:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:41,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:37:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:41,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:41,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646005960] [2022-07-19 20:37:41,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646005960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:41,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:41,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:37:41,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861155174] [2022-07-19 20:37:41,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:41,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:37:41,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:41,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:37:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:37:41,134 INFO L87 Difference]: Start difference. First operand 2338 states and 2971 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:42,611 INFO L93 Difference]: Finished difference Result 2994 states and 4018 transitions. [2022-07-19 20:37:42,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:37:42,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:37:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:42,619 INFO L225 Difference]: With dead ends: 2994 [2022-07-19 20:37:42,619 INFO L226 Difference]: Without dead ends: 2757 [2022-07-19 20:37:42,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:37:42,620 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1216 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:42,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1492 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:37:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2022-07-19 20:37:42,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 2584. [2022-07-19 20:37:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2067 states have (on average 1.3033381712626995) internal successors, (2694), 2103 states have internal predecessors, (2694), 278 states have call successors, (278), 174 states have call predecessors, (278), 237 states have return successors, (385), 308 states have call predecessors, (385), 276 states have call successors, (385) [2022-07-19 20:37:42,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3357 transitions. [2022-07-19 20:37:42,745 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3357 transitions. Word has length 123 [2022-07-19 20:37:42,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:42,745 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 3357 transitions. [2022-07-19 20:37:42,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:42,745 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3357 transitions. [2022-07-19 20:37:42,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:37:42,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:42,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:42,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:37:42,747 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:42,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:42,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1970514316, now seen corresponding path program 1 times [2022-07-19 20:37:42,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:42,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601271323] [2022-07-19 20:37:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:42,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:37:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:37:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:37:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:42,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:42,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601271323] [2022-07-19 20:37:42,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601271323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:42,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:42,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:42,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879574179] [2022-07-19 20:37:42,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:42,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:42,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:42,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:42,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:42,824 INFO L87 Difference]: Start difference. First operand 2584 states and 3357 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:44,583 INFO L93 Difference]: Finished difference Result 3582 states and 4947 transitions. [2022-07-19 20:37:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:37:44,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:37:44,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:44,594 INFO L225 Difference]: With dead ends: 3582 [2022-07-19 20:37:44,594 INFO L226 Difference]: Without dead ends: 3099 [2022-07-19 20:37:44,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:37:44,596 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 1226 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:44,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 2250 Invalid, 2306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 20:37:44,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2022-07-19 20:37:44,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 2813. [2022-07-19 20:37:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2273 states have (on average 1.3246810382754068) internal successors, (3011), 2310 states have internal predecessors, (3011), 294 states have call successors, (294), 180 states have call predecessors, (294), 244 states have return successors, (403), 325 states have call predecessors, (403), 292 states have call successors, (403) [2022-07-19 20:37:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 3708 transitions. [2022-07-19 20:37:44,766 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 3708 transitions. Word has length 123 [2022-07-19 20:37:44,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:44,766 INFO L495 AbstractCegarLoop]: Abstraction has 2813 states and 3708 transitions. [2022-07-19 20:37:44,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 3708 transitions. [2022-07-19 20:37:44,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:37:44,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:44,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:44,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:37:44,769 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash -935158966, now seen corresponding path program 1 times [2022-07-19 20:37:44,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:44,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107076634] [2022-07-19 20:37:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:44,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:44,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:37:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:44,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:37:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:44,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:37:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:44,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:44,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107076634] [2022-07-19 20:37:44,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107076634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:44,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:44,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:44,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925898731] [2022-07-19 20:37:44,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:44,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:44,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:44,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:44,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:44,855 INFO L87 Difference]: Start difference. First operand 2813 states and 3708 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:46,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:46,588 INFO L93 Difference]: Finished difference Result 4448 states and 6306 transitions. [2022-07-19 20:37:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:37:46,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:37:46,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:46,606 INFO L225 Difference]: With dead ends: 4448 [2022-07-19 20:37:46,606 INFO L226 Difference]: Without dead ends: 3736 [2022-07-19 20:37:46,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:37:46,610 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1295 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:46,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 1677 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 20:37:46,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3736 states. [2022-07-19 20:37:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3736 to 3272. [2022-07-19 20:37:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 2686 states have (on average 1.3574087862993298) internal successors, (3646), 2725 states have internal predecessors, (3646), 326 states have call successors, (326), 192 states have call predecessors, (326), 258 states have return successors, (443), 359 states have call predecessors, (443), 324 states have call successors, (443) [2022-07-19 20:37:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4415 transitions. [2022-07-19 20:37:46,750 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4415 transitions. Word has length 123 [2022-07-19 20:37:46,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:46,751 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 4415 transitions. [2022-07-19 20:37:46,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:46,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4415 transitions. [2022-07-19 20:37:46,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:37:46,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:46,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:46,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:37:46,753 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:46,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1326414284, now seen corresponding path program 1 times [2022-07-19 20:37:46,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:46,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408125249] [2022-07-19 20:37:46,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:46,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:46,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:46,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:46,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:37:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:46,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:37:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:46,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:37:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:46,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:46,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408125249] [2022-07-19 20:37:46,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408125249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:46,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:46,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:46,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706785956] [2022-07-19 20:37:46,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:46,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:46,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:46,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:46,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:46,847 INFO L87 Difference]: Start difference. First operand 3272 states and 4415 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:48,803 INFO L93 Difference]: Finished difference Result 6115 states and 8909 transitions. [2022-07-19 20:37:48,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:37:48,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:37:48,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:48,816 INFO L225 Difference]: With dead ends: 6115 [2022-07-19 20:37:48,839 INFO L226 Difference]: Without dead ends: 4944 [2022-07-19 20:37:48,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:37:48,845 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1221 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 2238 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:48,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 2238 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 20:37:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2022-07-19 20:37:49,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4191. [2022-07-19 20:37:49,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3993737546256761) internal successors, (4916), 3556 states have internal predecessors, (4916), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-19 20:37:49,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5835 transitions. [2022-07-19 20:37:49,166 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5835 transitions. Word has length 123 [2022-07-19 20:37:49,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:49,166 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5835 transitions. [2022-07-19 20:37:49,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:49,166 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5835 transitions. [2022-07-19 20:37:49,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:37:49,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:49,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:49,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:37:49,168 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:49,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:49,169 INFO L85 PathProgramCache]: Analyzing trace with hash -540294390, now seen corresponding path program 1 times [2022-07-19 20:37:49,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:49,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893061672] [2022-07-19 20:37:49,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:49,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:49,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:49,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:37:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:37:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:37:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:49,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:49,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893061672] [2022-07-19 20:37:49,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893061672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:49,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:49,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:49,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261726515] [2022-07-19 20:37:49,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:49,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:49,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:49,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:49,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:49,259 INFO L87 Difference]: Start difference. First operand 4191 states and 5835 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:50,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:50,401 INFO L93 Difference]: Finished difference Result 7039 states and 10364 transitions. [2022-07-19 20:37:50,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:37:50,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:37:50,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:50,414 INFO L225 Difference]: With dead ends: 7039 [2022-07-19 20:37:50,414 INFO L226 Difference]: Without dead ends: 4949 [2022-07-19 20:37:50,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:37:50,420 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 949 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:50,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 1380 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:37:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4949 states. [2022-07-19 20:37:50,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4949 to 4191. [2022-07-19 20:37:50,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3968118417307145) internal successors, (4907), 3556 states have internal predecessors, (4907), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-19 20:37:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5826 transitions. [2022-07-19 20:37:50,641 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5826 transitions. Word has length 123 [2022-07-19 20:37:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:50,642 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5826 transitions. [2022-07-19 20:37:50,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:50,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5826 transitions. [2022-07-19 20:37:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:37:50,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:50,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:50,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:37:50,644 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:50,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1357202376, now seen corresponding path program 1 times [2022-07-19 20:37:50,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:50,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310121416] [2022-07-19 20:37:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:50,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:50,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:37:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:37:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:37:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:50,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:50,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310121416] [2022-07-19 20:37:50,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310121416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:50,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:50,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:50,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110801834] [2022-07-19 20:37:50,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:50,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:50,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:50,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:50,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:50,724 INFO L87 Difference]: Start difference. First operand 4191 states and 5826 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:51,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:51,724 INFO L93 Difference]: Finished difference Result 7029 states and 10317 transitions. [2022-07-19 20:37:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:37:51,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:37:51,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:51,738 INFO L225 Difference]: With dead ends: 7029 [2022-07-19 20:37:51,738 INFO L226 Difference]: Without dead ends: 4939 [2022-07-19 20:37:51,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:37:51,744 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1108 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:51,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 1187 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:37:51,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2022-07-19 20:37:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4191. [2022-07-19 20:37:51,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3942499288357528) internal successors, (4898), 3556 states have internal predecessors, (4898), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-19 20:37:51,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5817 transitions. [2022-07-19 20:37:51,969 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5817 transitions. Word has length 123 [2022-07-19 20:37:51,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:51,969 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5817 transitions. [2022-07-19 20:37:51,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:51,969 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5817 transitions. [2022-07-19 20:37:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:37:51,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:51,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:51,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:37:51,972 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1906724022, now seen corresponding path program 1 times [2022-07-19 20:37:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:51,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335012659] [2022-07-19 20:37:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:37:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:37:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:37:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:52,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:52,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335012659] [2022-07-19 20:37:52,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335012659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:52,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:52,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:52,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569312516] [2022-07-19 20:37:52,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:52,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:52,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:52,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:52,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:52,057 INFO L87 Difference]: Start difference. First operand 4191 states and 5817 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:53,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:53,150 INFO L93 Difference]: Finished difference Result 7019 states and 10270 transitions. [2022-07-19 20:37:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:37:53,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:37:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:53,177 INFO L225 Difference]: With dead ends: 7019 [2022-07-19 20:37:53,181 INFO L226 Difference]: Without dead ends: 4929 [2022-07-19 20:37:53,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:37:53,199 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 945 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 1166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:53,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1372 Invalid, 1166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:37:53,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4929 states. [2022-07-19 20:37:53,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4929 to 4191. [2022-07-19 20:37:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4191 states, 3513 states have (on average 1.3916880159407914) internal successors, (4889), 3556 states have internal predecessors, (4889), 390 states have call successors, (390), 216 states have call predecessors, (390), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-07-19 20:37:53,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4191 states to 4191 states and 5808 transitions. [2022-07-19 20:37:53,488 INFO L78 Accepts]: Start accepts. Automaton has 4191 states and 5808 transitions. Word has length 123 [2022-07-19 20:37:53,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:53,488 INFO L495 AbstractCegarLoop]: Abstraction has 4191 states and 5808 transitions. [2022-07-19 20:37:53,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:53,488 INFO L276 IsEmpty]: Start isEmpty. Operand 4191 states and 5808 transitions. [2022-07-19 20:37:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:37:53,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:53,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:53,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:37:53,490 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash 481840008, now seen corresponding path program 1 times [2022-07-19 20:37:53,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:53,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355392871] [2022-07-19 20:37:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:53,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:37:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:37:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:37:53,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:53,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:53,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:53,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355392871] [2022-07-19 20:37:53,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355392871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:53,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:53,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:53,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783961469] [2022-07-19 20:37:53,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:53,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:53,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:53,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:53,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:53,587 INFO L87 Difference]: Start difference. First operand 4191 states and 5808 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:55,783 INFO L93 Difference]: Finished difference Result 10267 states and 15225 transitions. [2022-07-19 20:37:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:37:55,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:37:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:55,801 INFO L225 Difference]: With dead ends: 10267 [2022-07-19 20:37:55,801 INFO L226 Difference]: Without dead ends: 8177 [2022-07-19 20:37:55,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:37:55,806 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1268 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:55,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 2322 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 20:37:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2022-07-19 20:37:56,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 6046. [2022-07-19 20:37:56,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6046 states, 5192 states have (on average 1.4335516178736518) internal successors, (7443), 5243 states have internal predecessors, (7443), 510 states have call successors, (510), 264 states have call predecessors, (510), 342 states have return successors, (711), 555 states have call predecessors, (711), 508 states have call successors, (711) [2022-07-19 20:37:56,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6046 states to 6046 states and 8664 transitions. [2022-07-19 20:37:56,165 INFO L78 Accepts]: Start accepts. Automaton has 6046 states and 8664 transitions. Word has length 123 [2022-07-19 20:37:56,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:56,166 INFO L495 AbstractCegarLoop]: Abstraction has 6046 states and 8664 transitions. [2022-07-19 20:37:56,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:56,166 INFO L276 IsEmpty]: Start isEmpty. Operand 6046 states and 8664 transitions. [2022-07-19 20:37:56,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:37:56,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:56,169 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:56,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:37:56,169 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:56,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:56,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2082911114, now seen corresponding path program 1 times [2022-07-19 20:37:56,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:56,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762424958] [2022-07-19 20:37:56,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:56,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:37:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:37:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:37:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:56,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:56,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:56,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762424958] [2022-07-19 20:37:56,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762424958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:56,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:56,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:56,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226860398] [2022-07-19 20:37:56,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:56,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:56,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:56,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:56,235 INFO L87 Difference]: Start difference. First operand 6046 states and 8664 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:58,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:58,763 INFO L93 Difference]: Finished difference Result 17532 states and 26495 transitions. [2022-07-19 20:37:58,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:37:58,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:37:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:58,791 INFO L225 Difference]: With dead ends: 17532 [2022-07-19 20:37:58,791 INFO L226 Difference]: Without dead ends: 13587 [2022-07-19 20:37:58,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:37:58,801 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1445 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:58,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 2193 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 20:37:58,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13587 states. [2022-07-19 20:37:59,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13587 to 9659. [2022-07-19 20:37:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9659 states, 8461 states have (on average 1.4670842689989363) internal successors, (12413), 8528 states have internal predecessors, (12413), 742 states have call successors, (742), 360 states have call predecessors, (742), 454 states have return successors, (1121), 803 states have call predecessors, (1121), 740 states have call successors, (1121) [2022-07-19 20:37:59,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9659 states to 9659 states and 14276 transitions. [2022-07-19 20:37:59,420 INFO L78 Accepts]: Start accepts. Automaton has 9659 states and 14276 transitions. Word has length 123 [2022-07-19 20:37:59,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:59,421 INFO L495 AbstractCegarLoop]: Abstraction has 9659 states and 14276 transitions. [2022-07-19 20:37:59,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:37:59,421 INFO L276 IsEmpty]: Start isEmpty. Operand 9659 states and 14276 transitions. [2022-07-19 20:37:59,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:37:59,425 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:59,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:59,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:37:59,425 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:59,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:59,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1026179912, now seen corresponding path program 1 times [2022-07-19 20:37:59,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:59,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750005657] [2022-07-19 20:37:59,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:59,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:37:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:59,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:37:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:59,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:37:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:59,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:37:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:59,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:59,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750005657] [2022-07-19 20:37:59,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750005657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:59,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:59,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:59,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618856575] [2022-07-19 20:37:59,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:59,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:59,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:59,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:59,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:59,521 INFO L87 Difference]: Start difference. First operand 9659 states and 14276 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:03,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:03,248 INFO L93 Difference]: Finished difference Result 31519 states and 48365 transitions. [2022-07-19 20:38:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:38:03,249 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:38:03,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:03,346 INFO L225 Difference]: With dead ends: 31519 [2022-07-19 20:38:03,346 INFO L226 Difference]: Without dead ends: 23961 [2022-07-19 20:38:03,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:38:03,375 INFO L413 NwaCegarLoop]: 677 mSDtfsCounter, 1306 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 2199 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 2337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:03,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1737 Invalid, 2337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2199 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 20:38:03,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23961 states. [2022-07-19 20:38:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23961 to 16948. [2022-07-19 20:38:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16948 states, 15078 states have (on average 1.4919087412123624) internal successors, (22495), 15177 states have internal predecessors, (22495), 1190 states have call successors, (1190), 552 states have call predecessors, (1190), 678 states have return successors, (2087), 1283 states have call predecessors, (2087), 1188 states have call successors, (2087) [2022-07-19 20:38:04,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16948 states to 16948 states and 25772 transitions. [2022-07-19 20:38:04,548 INFO L78 Accepts]: Start accepts. Automaton has 16948 states and 25772 transitions. Word has length 123 [2022-07-19 20:38:04,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:04,548 INFO L495 AbstractCegarLoop]: Abstraction has 16948 states and 25772 transitions. [2022-07-19 20:38:04,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:04,549 INFO L276 IsEmpty]: Start isEmpty. Operand 16948 states and 25772 transitions. [2022-07-19 20:38:04,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:38:04,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:04,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:04,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:38:04,556 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:04,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:04,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1917402166, now seen corresponding path program 1 times [2022-07-19 20:38:04,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:04,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022847882] [2022-07-19 20:38:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:04,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:38:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:38:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:38:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:04,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:04,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022847882] [2022-07-19 20:38:04,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022847882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:04,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:04,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:04,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656894869] [2022-07-19 20:38:04,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:04,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:04,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:04,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:04,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:04,636 INFO L87 Difference]: Start difference. First operand 16948 states and 25772 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:10,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:10,184 INFO L93 Difference]: Finished difference Result 59110 states and 92163 transitions. [2022-07-19 20:38:10,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:38:10,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:38:10,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:10,299 INFO L225 Difference]: With dead ends: 59110 [2022-07-19 20:38:10,299 INFO L226 Difference]: Without dead ends: 44263 [2022-07-19 20:38:10,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:38:10,348 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 1369 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:10,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 2185 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 20:38:10,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44263 states. [2022-07-19 20:38:12,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44263 to 31493. [2022-07-19 20:38:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31493 states, 28311 states have (on average 1.5078591360248668) internal successors, (42689), 28474 states have internal predecessors, (42689), 2054 states have call successors, (2054), 936 states have call predecessors, (2054), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-07-19 20:38:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31493 states to 31493 states and 49216 transitions. [2022-07-19 20:38:12,612 INFO L78 Accepts]: Start accepts. Automaton has 31493 states and 49216 transitions. Word has length 123 [2022-07-19 20:38:12,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:12,612 INFO L495 AbstractCegarLoop]: Abstraction has 31493 states and 49216 transitions. [2022-07-19 20:38:12,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 31493 states and 49216 transitions. [2022-07-19 20:38:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:38:12,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:12,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:12,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:38:12,627 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:12,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:12,627 INFO L85 PathProgramCache]: Analyzing trace with hash 758590216, now seen corresponding path program 1 times [2022-07-19 20:38:12,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:12,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686738142] [2022-07-19 20:38:12,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:12,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:38:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:38:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:38:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:12,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:12,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:12,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686738142] [2022-07-19 20:38:12,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686738142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:12,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:12,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:12,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804380490] [2022-07-19 20:38:12,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:12,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:12,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:12,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:12,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:12,695 INFO L87 Difference]: Start difference. First operand 31493 states and 49216 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:17,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:17,102 INFO L93 Difference]: Finished difference Result 69211 states and 110899 transitions. [2022-07-19 20:38:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:38:17,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:38:17,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:17,211 INFO L225 Difference]: With dead ends: 69211 [2022-07-19 20:38:17,211 INFO L226 Difference]: Without dead ends: 39819 [2022-07-19 20:38:17,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:38:17,269 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 946 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:17,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1350 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:38:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39819 states. [2022-07-19 20:38:19,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39819 to 31493. [2022-07-19 20:38:19,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31493 states, 28311 states have (on average 1.5033026032284271) internal successors, (42560), 28474 states have internal predecessors, (42560), 2054 states have call successors, (2054), 936 states have call predecessors, (2054), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-07-19 20:38:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31493 states to 31493 states and 49087 transitions. [2022-07-19 20:38:19,563 INFO L78 Accepts]: Start accepts. Automaton has 31493 states and 49087 transitions. Word has length 123 [2022-07-19 20:38:19,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:19,563 INFO L495 AbstractCegarLoop]: Abstraction has 31493 states and 49087 transitions. [2022-07-19 20:38:19,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:19,563 INFO L276 IsEmpty]: Start isEmpty. Operand 31493 states and 49087 transitions. [2022-07-19 20:38:19,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:38:19,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:19,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:19,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 20:38:19,577 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:19,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:19,578 INFO L85 PathProgramCache]: Analyzing trace with hash 730089926, now seen corresponding path program 1 times [2022-07-19 20:38:19,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:19,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331241379] [2022-07-19 20:38:19,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:19,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:38:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:38:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:38:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:19,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:19,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331241379] [2022-07-19 20:38:19,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331241379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:19,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:19,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:19,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468243076] [2022-07-19 20:38:19,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:19,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:19,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:19,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:19,700 INFO L87 Difference]: Start difference. First operand 31493 states and 49087 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:28,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:28,963 INFO L93 Difference]: Finished difference Result 109265 states and 173533 transitions. [2022-07-19 20:38:28,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:38:28,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:38:28,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:29,263 INFO L225 Difference]: With dead ends: 109265 [2022-07-19 20:38:29,264 INFO L226 Difference]: Without dead ends: 79873 [2022-07-19 20:38:29,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:38:29,326 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 1240 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2051 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 2171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:29,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1274 Valid, 2170 Invalid, 2171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2051 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 20:38:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79873 states. [2022-07-19 20:38:33,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79873 to 60776. [2022-07-19 20:38:33,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60776 states, 55034 states have (on average 1.5130646509430534) internal successors, (83270), 55325 states have internal predecessors, (83270), 3718 states have call successors, (3718), 1704 states have call predecessors, (3718), 2022 states have return successors, (10639), 4003 states have call predecessors, (10639), 3716 states have call successors, (10639) [2022-07-19 20:38:33,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60776 states to 60776 states and 97627 transitions. [2022-07-19 20:38:33,990 INFO L78 Accepts]: Start accepts. Automaton has 60776 states and 97627 transitions. Word has length 123 [2022-07-19 20:38:33,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:33,991 INFO L495 AbstractCegarLoop]: Abstraction has 60776 states and 97627 transitions. [2022-07-19 20:38:33,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:33,991 INFO L276 IsEmpty]: Start isEmpty. Operand 60776 states and 97627 transitions. [2022-07-19 20:38:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 20:38:34,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:34,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:34,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 20:38:34,016 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:34,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:34,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1210492088, now seen corresponding path program 1 times [2022-07-19 20:38:34,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:34,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706960145] [2022-07-19 20:38:34,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:34,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 20:38:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 20:38:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:38:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:34,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:34,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:34,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706960145] [2022-07-19 20:38:34,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706960145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:34,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:34,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:34,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437041946] [2022-07-19 20:38:34,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:34,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:34,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:34,092 INFO L87 Difference]: Start difference. First operand 60776 states and 97627 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:49,991 INFO L93 Difference]: Finished difference Result 211314 states and 345015 transitions. [2022-07-19 20:38:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:38:49,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-07-19 20:38:49,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:50,693 INFO L225 Difference]: With dead ends: 211314 [2022-07-19 20:38:50,694 INFO L226 Difference]: Without dead ends: 152639 [2022-07-19 20:38:50,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:38:50,804 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 1185 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:50,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 2178 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 20:38:50,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152639 states.