./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_2.cil-1+token_ring.03.cil-2.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 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:47:12,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:47:12,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:47:13,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:47:13,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:47:13,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:47:13,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:47:13,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:47:13,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:47:13,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:47:13,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:47:13,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:47:13,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:47:13,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:47:13,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:47:13,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:47:13,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:47:13,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:47:13,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:47:13,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:47:13,045 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:47:13,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:47:13,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:47:13,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:47:13,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:47:13,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:47:13,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:47:13,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:47:13,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:47:13,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:47:13,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:47:13,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:47:13,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:47:13,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:47:13,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:47:13,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:47:13,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:47:13,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:47:13,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:47:13,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:47:13,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:47:13,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:47:13,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:47:13,088 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:47:13,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:47:13,088 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:47:13,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:47:13,089 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:47:13,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:47:13,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:47:13,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:47:13,090 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:47:13,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:47:13,091 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:47:13,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:47:13,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:47:13,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:47:13,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:47:13,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:47:13,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:47:13,092 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:47:13,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:47:13,092 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:47:13,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:47:13,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:47:13,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:47:13,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:47:13,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:47:13,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:47:13,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:47:13,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:47:13,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:47:13,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:47:13,095 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:47:13,095 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:47:13,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:47:13,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c3aab1156afcb98b97b027e9b66004d54025f3b89e95d6d35dc2e84fdb640d2 [2022-07-22 20:47:13,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:47:13,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:47:13,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:47:13,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:47:13,284 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:47:13,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2022-07-22 20:47:13,331 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa04bd21b/d1a8d8224b49495b96f0ab740a07df2a/FLAGf240a7e78 [2022-07-22 20:47:13,708 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:47:13,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2022-07-22 20:47:13,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa04bd21b/d1a8d8224b49495b96f0ab740a07df2a/FLAGf240a7e78 [2022-07-22 20:47:13,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa04bd21b/d1a8d8224b49495b96f0ab740a07df2a [2022-07-22 20:47:13,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:47:13,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:47:13,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:47:13,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:47:13,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:47:13,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:47:13" (1/1) ... [2022-07-22 20:47:13,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a8072ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:13, skipping insertion in model container [2022-07-22 20:47:13,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:47:13" (1/1) ... [2022-07-22 20:47:13,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:47:13,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:47:13,890 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_2.cil-1+token_ring.03.cil-2.c[914,927] [2022-07-22 20:47:13,931 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_2.cil-1+token_ring.03.cil-2.c[7115,7128] [2022-07-22 20:47:13,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:47:13,972 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:47:13,979 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_2.cil-1+token_ring.03.cil-2.c[914,927] [2022-07-22 20:47:13,991 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_2.cil-1+token_ring.03.cil-2.c[7115,7128] [2022-07-22 20:47:14,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:47:14,034 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:47:14,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14 WrapperNode [2022-07-22 20:47:14,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:47:14,037 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:47:14,037 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:47:14,037 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:47:14,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14" (1/1) ... [2022-07-22 20:47:14,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14" (1/1) ... [2022-07-22 20:47:14,078 INFO L137 Inliner]: procedures = 59, calls = 66, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 518 [2022-07-22 20:47:14,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:47:14,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:47:14,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:47:14,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:47:14,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14" (1/1) ... [2022-07-22 20:47:14,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14" (1/1) ... [2022-07-22 20:47:14,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14" (1/1) ... [2022-07-22 20:47:14,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14" (1/1) ... [2022-07-22 20:47:14,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14" (1/1) ... [2022-07-22 20:47:14,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14" (1/1) ... [2022-07-22 20:47:14,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14" (1/1) ... [2022-07-22 20:47:14,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:47:14,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:47:14,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:47:14,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:47:14,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14" (1/1) ... [2022-07-22 20:47:14,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:47:14,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:47:14,163 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) [2022-07-22 20:47:14,165 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 [2022-07-22 20:47:14,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:47:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:47:14,199 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:47:14,199 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-22 20:47:14,203 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-22 20:47:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:47:14,203 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:47:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:47:14,203 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:47:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-22 20:47:14,203 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-22 20:47:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:47:14,203 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:47:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:47:14,203 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:47:14,203 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-22 20:47:14,203 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-22 20:47:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-22 20:47:14,204 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-22 20:47:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-22 20:47:14,204 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-22 20:47:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:47:14,204 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:47:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:47:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:47:14,204 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:47:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-22 20:47:14,204 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-22 20:47:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:47:14,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:47:14,204 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:47:14,205 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:47:14,287 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:47:14,289 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:47:14,715 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:47:14,730 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:47:14,730 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-07-22 20:47:14,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:47:14 BoogieIcfgContainer [2022-07-22 20:47:14,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:47:14,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:47:14,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:47:14,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:47:14,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:47:13" (1/3) ... [2022-07-22 20:47:14,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e29ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:47:14, skipping insertion in model container [2022-07-22 20:47:14,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:14" (2/3) ... [2022-07-22 20:47:14,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e29ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:47:14, skipping insertion in model container [2022-07-22 20:47:14,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:47:14" (3/3) ... [2022-07-22 20:47:14,742 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.03.cil-2.c [2022-07-22 20:47:14,753 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:47:14,754 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:47:14,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:47:14,815 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@2d3bd913, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@577a5fa0 [2022-07-22 20:47:14,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:47:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 258 states, 210 states have (on average 1.5714285714285714) internal successors, (330), 216 states have internal predecessors, (330), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-07-22 20:47:14,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:47:14,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:14,831 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] [2022-07-22 20:47:14,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:14,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:14,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2111945575, now seen corresponding path program 1 times [2022-07-22 20:47:14,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:14,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696650415] [2022-07-22 20:47:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:14,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:15,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:15,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:15,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:15,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:15,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:15,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:15,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:15,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:15,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696650415] [2022-07-22 20:47:15,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696650415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:15,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:15,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:47:15,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338193948] [2022-07-22 20:47:15,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:15,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:47:15,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:15,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:47:15,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:15,201 INFO L87 Difference]: Start difference. First operand has 258 states, 210 states have (on average 1.5714285714285714) internal successors, (330), 216 states have internal predecessors, (330), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) 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) [2022-07-22 20:47:15,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:15,887 INFO L93 Difference]: Finished difference Result 632 states and 960 transitions. [2022-07-22 20:47:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:47:15,890 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 [2022-07-22 20:47:15,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:15,902 INFO L225 Difference]: With dead ends: 632 [2022-07-22 20:47:15,902 INFO L226 Difference]: Without dead ends: 383 [2022-07-22 20:47:15,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:47:15,907 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 678 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:15,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1214 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:47:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-07-22 20:47:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 344. [2022-07-22 20:47:15,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 278 states have (on average 1.4496402877697843) internal successors, (403), 284 states have internal predecessors, (403), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2022-07-22 20:47:15,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 490 transitions. [2022-07-22 20:47:15,965 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 490 transitions. Word has length 65 [2022-07-22 20:47:15,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:15,965 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 490 transitions. [2022-07-22 20:47:15,965 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) [2022-07-22 20:47:15,965 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 490 transitions. [2022-07-22 20:47:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:47:15,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:15,969 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] [2022-07-22 20:47:15,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:47:15,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:15,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:15,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1779235770, now seen corresponding path program 1 times [2022-07-22 20:47:15,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:15,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866863516] [2022-07-22 20:47:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:15,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:16,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:16,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:16,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866863516] [2022-07-22 20:47:16,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866863516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:16,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:16,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:47:16,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462987173] [2022-07-22 20:47:16,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:16,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:47:16,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:16,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:47:16,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:16,086 INFO L87 Difference]: Start difference. First operand 344 states and 490 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) [2022-07-22 20:47:16,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:16,821 INFO L93 Difference]: Finished difference Result 691 states and 967 transitions. [2022-07-22 20:47:16,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 20:47:16,821 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 [2022-07-22 20:47:16,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:16,825 INFO L225 Difference]: With dead ends: 691 [2022-07-22 20:47:16,825 INFO L226 Difference]: Without dead ends: 514 [2022-07-22 20:47:16,826 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 [2022-07-22 20:47:16,827 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 726 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:16,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1251 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 901 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:47:16,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-22 20:47:16,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 440. [2022-07-22 20:47:16,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 354 states have (on average 1.4322033898305084) internal successors, (507), 362 states have internal predecessors, (507), 53 states have call successors, (53), 28 states have call predecessors, (53), 31 states have return successors, (64), 53 states have call predecessors, (64), 51 states have call successors, (64) [2022-07-22 20:47:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 624 transitions. [2022-07-22 20:47:16,859 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 624 transitions. Word has length 65 [2022-07-22 20:47:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:16,860 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 624 transitions. [2022-07-22 20:47:16,860 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) [2022-07-22 20:47:16,860 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 624 transitions. [2022-07-22 20:47:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:47:16,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:16,863 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] [2022-07-22 20:47:16,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:47:16,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:16,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash 487145416, now seen corresponding path program 1 times [2022-07-22 20:47:16,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:16,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118128229] [2022-07-22 20:47:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:16,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:16,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:16,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118128229] [2022-07-22 20:47:16,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118128229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:16,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:16,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:47:16,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599311626] [2022-07-22 20:47:16,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:16,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:47:16,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:16,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:47:16,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:47:16,960 INFO L87 Difference]: Start difference. First operand 440 states and 624 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2022-07-22 20:47:17,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:17,511 INFO L93 Difference]: Finished difference Result 741 states and 1038 transitions. [2022-07-22 20:47:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:47:17,511 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2022-07-22 20:47:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:17,514 INFO L225 Difference]: With dead ends: 741 [2022-07-22 20:47:17,514 INFO L226 Difference]: Without dead ends: 474 [2022-07-22 20:47:17,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:47:17,516 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 429 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:17,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1394 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:47:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-07-22 20:47:17,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 445. [2022-07-22 20:47:17,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 358 states have (on average 1.4217877094972067) internal successors, (509), 366 states have internal predecessors, (509), 53 states have call successors, (53), 28 states have call predecessors, (53), 32 states have return successors, (65), 54 states have call predecessors, (65), 51 states have call successors, (65) [2022-07-22 20:47:17,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 627 transitions. [2022-07-22 20:47:17,542 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 627 transitions. Word has length 65 [2022-07-22 20:47:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:17,543 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 627 transitions. [2022-07-22 20:47:17,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2022-07-22 20:47:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 627 transitions. [2022-07-22 20:47:17,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:47:17,544 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:17,545 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] [2022-07-22 20:47:17,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:47:17,545 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash -542213882, now seen corresponding path program 1 times [2022-07-22 20:47:17,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:17,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286327798] [2022-07-22 20:47:17,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:17,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:17,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:17,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:17,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:17,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286327798] [2022-07-22 20:47:17,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286327798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:17,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:17,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:47:17,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831990191] [2022-07-22 20:47:17,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:17,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:47:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:17,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:47:17,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:47:17,673 INFO L87 Difference]: Start difference. First operand 445 states and 627 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2022-07-22 20:47:18,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:18,243 INFO L93 Difference]: Finished difference Result 763 states and 1060 transitions. [2022-07-22 20:47:18,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:47:18,244 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2022-07-22 20:47:18,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:18,246 INFO L225 Difference]: With dead ends: 763 [2022-07-22 20:47:18,246 INFO L226 Difference]: Without dead ends: 491 [2022-07-22 20:47:18,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:47:18,248 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 430 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:18,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 1392 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:47:18,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-07-22 20:47:18,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 460. [2022-07-22 20:47:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 370 states have (on average 1.4081081081081082) internal successors, (521), 378 states have internal predecessors, (521), 53 states have call successors, (53), 28 states have call predecessors, (53), 35 states have return successors, (68), 57 states have call predecessors, (68), 51 states have call successors, (68) [2022-07-22 20:47:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 642 transitions. [2022-07-22 20:47:18,265 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 642 transitions. Word has length 65 [2022-07-22 20:47:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:18,265 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 642 transitions. [2022-07-22 20:47:18,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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) [2022-07-22 20:47:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 642 transitions. [2022-07-22 20:47:18,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:47:18,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:18,267 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] [2022-07-22 20:47:18,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:47:18,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash 843989512, now seen corresponding path program 1 times [2022-07-22 20:47:18,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:18,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293387451] [2022-07-22 20:47:18,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:18,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:18,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:18,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293387451] [2022-07-22 20:47:18,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293387451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:18,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:18,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:18,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238484787] [2022-07-22 20:47:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:18,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:18,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:18,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:18,349 INFO L87 Difference]: Start difference. First operand 460 states and 642 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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) [2022-07-22 20:47:18,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:18,689 INFO L93 Difference]: Finished difference Result 1074 states and 1461 transitions. [2022-07-22 20:47:18,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:47:18,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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 [2022-07-22 20:47:18,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:18,694 INFO L225 Difference]: With dead ends: 1074 [2022-07-22 20:47:18,694 INFO L226 Difference]: Without dead ends: 790 [2022-07-22 20:47:18,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:47:18,696 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 680 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:18,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 989 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:47:18,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2022-07-22 20:47:18,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 738. [2022-07-22 20:47:18,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 584 states have (on average 1.3664383561643836) internal successors, (798), 599 states have internal predecessors, (798), 87 states have call successors, (87), 49 states have call predecessors, (87), 65 states have return successors, (126), 96 states have call predecessors, (126), 85 states have call successors, (126) [2022-07-22 20:47:18,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1011 transitions. [2022-07-22 20:47:18,724 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1011 transitions. Word has length 65 [2022-07-22 20:47:18,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:18,724 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1011 transitions. [2022-07-22 20:47:18,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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) [2022-07-22 20:47:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1011 transitions. [2022-07-22 20:47:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:47:18,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:18,726 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] [2022-07-22 20:47:18,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:47:18,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:18,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:18,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1077063563, now seen corresponding path program 1 times [2022-07-22 20:47:18,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:18,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17304043] [2022-07-22 20:47:18,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:18,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:18,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:18,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:18,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:18,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17304043] [2022-07-22 20:47:18,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17304043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:18,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:18,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:47:18,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453434877] [2022-07-22 20:47:18,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:18,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:47:18,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:18,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:47:18,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:47:18,816 INFO L87 Difference]: Start difference. First operand 738 states and 1011 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:47:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:19,165 INFO L93 Difference]: Finished difference Result 1885 states and 2528 transitions. [2022-07-22 20:47:19,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:47:19,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:47:19,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:19,174 INFO L225 Difference]: With dead ends: 1885 [2022-07-22 20:47:19,175 INFO L226 Difference]: Without dead ends: 1302 [2022-07-22 20:47:19,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:47:19,177 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 650 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:19,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 806 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:47:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1302 states. [2022-07-22 20:47:19,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1302 to 1195. [2022-07-22 20:47:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 943 states have (on average 1.335100742311771) internal successors, (1259), 961 states have internal predecessors, (1259), 130 states have call successors, (130), 91 states have call predecessors, (130), 120 states have return successors, (194), 149 states have call predecessors, (194), 128 states have call successors, (194) [2022-07-22 20:47:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1583 transitions. [2022-07-22 20:47:19,215 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1583 transitions. Word has length 66 [2022-07-22 20:47:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:19,216 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1583 transitions. [2022-07-22 20:47:19,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:47:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1583 transitions. [2022-07-22 20:47:19,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:47:19,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:19,218 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] [2022-07-22 20:47:19,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:47:19,218 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:19,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:19,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1759664074, now seen corresponding path program 1 times [2022-07-22 20:47:19,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:19,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778800644] [2022-07-22 20:47:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:19,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:19,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:19,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778800644] [2022-07-22 20:47:19,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778800644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:19,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:19,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:47:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980763869] [2022-07-22 20:47:19,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:19,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:47:19,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:19,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:47:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:47:19,264 INFO L87 Difference]: Start difference. First operand 1195 states and 1583 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:47:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:19,591 INFO L93 Difference]: Finished difference Result 3275 states and 4283 transitions. [2022-07-22 20:47:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:47:19,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:47:19,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:19,600 INFO L225 Difference]: With dead ends: 3275 [2022-07-22 20:47:19,601 INFO L226 Difference]: Without dead ends: 2255 [2022-07-22 20:47:19,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-22 20:47:19,605 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 858 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:19,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 696 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:47:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2255 states. [2022-07-22 20:47:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2255 to 2065. [2022-07-22 20:47:19,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1613 states have (on average 1.2982021078735275) internal successors, (2094), 1645 states have internal predecessors, (2094), 228 states have call successors, (228), 175 states have call predecessors, (228), 222 states have return successors, (338), 251 states have call predecessors, (338), 226 states have call successors, (338) [2022-07-22 20:47:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2660 transitions. [2022-07-22 20:47:19,667 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2660 transitions. Word has length 66 [2022-07-22 20:47:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:19,667 INFO L495 AbstractCegarLoop]: Abstraction has 2065 states and 2660 transitions. [2022-07-22 20:47:19,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:47:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2660 transitions. [2022-07-22 20:47:19,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 20:47:19,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:19,673 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] [2022-07-22 20:47:19,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:47:19,674 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:19,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:19,674 INFO L85 PathProgramCache]: Analyzing trace with hash 825996842, now seen corresponding path program 1 times [2022-07-22 20:47:19,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:19,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67755204] [2022-07-22 20:47:19,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:19,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:19,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:19,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67755204] [2022-07-22 20:47:19,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67755204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:19,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:19,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:47:19,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239612059] [2022-07-22 20:47:19,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:19,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:47:19,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:19,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:47:19,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:47:19,726 INFO L87 Difference]: Start difference. First operand 2065 states and 2660 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:47:20,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:20,084 INFO L93 Difference]: Finished difference Result 4911 states and 6260 transitions. [2022-07-22 20:47:20,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:47:20,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-22 20:47:20,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:20,098 INFO L225 Difference]: With dead ends: 4911 [2022-07-22 20:47:20,098 INFO L226 Difference]: Without dead ends: 3021 [2022-07-22 20:47:20,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:47:20,103 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 666 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:20,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 896 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:47:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3021 states. [2022-07-22 20:47:20,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3021 to 2801. [2022-07-22 20:47:20,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2183 states have (on average 1.2835547411818597) internal successors, (2802), 2225 states have internal predecessors, (2802), 308 states have call successors, (308), 245 states have call predecessors, (308), 308 states have return successors, (451), 337 states have call predecessors, (451), 306 states have call successors, (451) [2022-07-22 20:47:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3561 transitions. [2022-07-22 20:47:20,228 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3561 transitions. Word has length 72 [2022-07-22 20:47:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:20,228 INFO L495 AbstractCegarLoop]: Abstraction has 2801 states and 3561 transitions. [2022-07-22 20:47:20,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:47:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3561 transitions. [2022-07-22 20:47:20,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 20:47:20,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:20,230 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:20,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:47:20,230 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:20,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:20,230 INFO L85 PathProgramCache]: Analyzing trace with hash -680171098, now seen corresponding path program 1 times [2022-07-22 20:47:20,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:20,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372727468] [2022-07-22 20:47:20,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:20,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:20,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:20,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372727468] [2022-07-22 20:47:20,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372727468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:20,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:20,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:20,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530375026] [2022-07-22 20:47:20,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:20,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:20,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:20,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:20,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:20,318 INFO L87 Difference]: Start difference. First operand 2801 states and 3561 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:47:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:20,720 INFO L93 Difference]: Finished difference Result 3527 states and 4444 transitions. [2022-07-22 20:47:20,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:47:20,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-22 20:47:20,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:20,734 INFO L225 Difference]: With dead ends: 3527 [2022-07-22 20:47:20,734 INFO L226 Difference]: Without dead ends: 3524 [2022-07-22 20:47:20,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:47:20,738 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1202 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:20,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 710 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:47:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2022-07-22 20:47:20,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 3271. [2022-07-22 20:47:20,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3271 states, 2548 states have (on average 1.2770800627943486) internal successors, (3254), 2595 states have internal predecessors, (3254), 356 states have call successors, (356), 287 states have call predecessors, (356), 365 states have return successors, (528), 395 states have call predecessors, (528), 355 states have call successors, (528) [2022-07-22 20:47:20,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 4138 transitions. [2022-07-22 20:47:20,859 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 4138 transitions. Word has length 73 [2022-07-22 20:47:20,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:20,860 INFO L495 AbstractCegarLoop]: Abstraction has 3271 states and 4138 transitions. [2022-07-22 20:47:20,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:47:20,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 4138 transitions. [2022-07-22 20:47:20,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 20:47:20,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:20,862 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:20,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:47:20,862 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:20,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:20,862 INFO L85 PathProgramCache]: Analyzing trace with hash 388759028, now seen corresponding path program 1 times [2022-07-22 20:47:20,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:20,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547705196] [2022-07-22 20:47:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:20,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:20,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:20,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547705196] [2022-07-22 20:47:20,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547705196] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:47:20,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526251907] [2022-07-22 20:47:20,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:20,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:20,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:47:20,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:47:20,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:47:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:21,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 20:47:21,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:47:21,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:21,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:47:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:21,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526251907] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:47:21,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:47:21,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-22 20:47:21,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117243339] [2022-07-22 20:47:21,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:47:21,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:47:21,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:21,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:47:21,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:47:21,459 INFO L87 Difference]: Start difference. First operand 3271 states and 4138 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 20:47:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:22,657 INFO L93 Difference]: Finished difference Result 7548 states and 9468 transitions. [2022-07-22 20:47:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 20:47:22,657 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-22 20:47:22,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:22,683 INFO L225 Difference]: With dead ends: 7548 [2022-07-22 20:47:22,683 INFO L226 Difference]: Without dead ends: 7545 [2022-07-22 20:47:22,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-22 20:47:22,686 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1209 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:22,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 1862 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:47:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7545 states. [2022-07-22 20:47:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7545 to 5017. [2022-07-22 20:47:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 3914 states have (on average 1.275932549821155) internal successors, (4994), 3985 states have internal predecessors, (4994), 536 states have call successors, (536), 441 states have call predecessors, (536), 565 states have return successors, (806), 597 states have call predecessors, (806), 535 states have call successors, (806) [2022-07-22 20:47:22,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 6336 transitions. [2022-07-22 20:47:22,986 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 6336 transitions. Word has length 74 [2022-07-22 20:47:22,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:22,986 INFO L495 AbstractCegarLoop]: Abstraction has 5017 states and 6336 transitions. [2022-07-22 20:47:22,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 20:47:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 6336 transitions. [2022-07-22 20:47:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 20:47:22,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:22,989 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:23,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:47:23,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 20:47:23,197 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:23,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:23,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1322076070, now seen corresponding path program 2 times [2022-07-22 20:47:23,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:23,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886267769] [2022-07-22 20:47:23,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:23,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:23,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:23,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:23,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886267769] [2022-07-22 20:47:23,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886267769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:23,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:23,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:47:23,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393354178] [2022-07-22 20:47:23,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:23,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:47:23,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:23,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:47:23,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:47:23,250 INFO L87 Difference]: Start difference. First operand 5017 states and 6336 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:47:23,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:23,595 INFO L93 Difference]: Finished difference Result 7607 states and 9625 transitions. [2022-07-22 20:47:23,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 20:47:23,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-22 20:47:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:23,608 INFO L225 Difference]: With dead ends: 7607 [2022-07-22 20:47:23,608 INFO L226 Difference]: Without dead ends: 3644 [2022-07-22 20:47:23,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:47:23,615 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 726 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:23,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 817 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:47:23,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2022-07-22 20:47:23,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3437. [2022-07-22 20:47:23,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3437 states, 2682 states have (on average 1.2580164056674124) internal successors, (3374), 2731 states have internal predecessors, (3374), 372 states have call successors, (372), 301 states have call predecessors, (372), 381 states have return successors, (536), 411 states have call predecessors, (536), 371 states have call successors, (536) [2022-07-22 20:47:23,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3437 states to 3437 states and 4282 transitions. [2022-07-22 20:47:23,775 INFO L78 Accepts]: Start accepts. Automaton has 3437 states and 4282 transitions. Word has length 77 [2022-07-22 20:47:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:23,776 INFO L495 AbstractCegarLoop]: Abstraction has 3437 states and 4282 transitions. [2022-07-22 20:47:23,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:47:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3437 states and 4282 transitions. [2022-07-22 20:47:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 20:47:23,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:23,778 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] [2022-07-22 20:47:23,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 20:47:23,779 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:23,779 INFO L85 PathProgramCache]: Analyzing trace with hash -360800699, now seen corresponding path program 1 times [2022-07-22 20:47:23,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:23,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810596842] [2022-07-22 20:47:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:23,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:23,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:23,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:23,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810596842] [2022-07-22 20:47:23,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810596842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:23,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:23,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:47:23,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050064257] [2022-07-22 20:47:23,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:23,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:47:23,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:23,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:47:23,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:47:23,835 INFO L87 Difference]: Start difference. First operand 3437 states and 4282 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-22 20:47:24,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:24,629 INFO L93 Difference]: Finished difference Result 3805 states and 4849 transitions. [2022-07-22 20:47:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:47:24,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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 79 [2022-07-22 20:47:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:24,644 INFO L225 Difference]: With dead ends: 3805 [2022-07-22 20:47:24,644 INFO L226 Difference]: Without dead ends: 3664 [2022-07-22 20:47:24,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:47:24,646 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 736 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:24,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 918 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:47:24,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3664 states. [2022-07-22 20:47:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3664 to 3579. [2022-07-22 20:47:24,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3579 states, 2805 states have (on average 1.2695187165775401) internal successors, (3561), 2855 states have internal predecessors, (3561), 384 states have call successors, (384), 307 states have call predecessors, (384), 388 states have return successors, (551), 423 states have call predecessors, (551), 383 states have call successors, (551) [2022-07-22 20:47:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3579 states to 3579 states and 4496 transitions. [2022-07-22 20:47:24,843 INFO L78 Accepts]: Start accepts. Automaton has 3579 states and 4496 transitions. Word has length 79 [2022-07-22 20:47:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:24,843 INFO L495 AbstractCegarLoop]: Abstraction has 3579 states and 4496 transitions. [2022-07-22 20:47:24,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 4 states have internal predecessors, (69), 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) [2022-07-22 20:47:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 3579 states and 4496 transitions. [2022-07-22 20:47:24,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 20:47:24,846 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:24,846 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] [2022-07-22 20:47:24,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:47:24,846 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:24,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:24,847 INFO L85 PathProgramCache]: Analyzing trace with hash -123752503, now seen corresponding path program 1 times [2022-07-22 20:47:24,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:24,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139688794] [2022-07-22 20:47:24,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:24,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:24,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:24,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:24,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:24,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139688794] [2022-07-22 20:47:24,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139688794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:24,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:24,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:24,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501105171] [2022-07-22 20:47:24,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:24,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:24,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:24,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:24,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:24,911 INFO L87 Difference]: Start difference. First operand 3579 states and 4496 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:25,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:25,892 INFO L93 Difference]: Finished difference Result 4133 states and 5342 transitions. [2022-07-22 20:47:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:47:25,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-22 20:47:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:25,907 INFO L225 Difference]: With dead ends: 4133 [2022-07-22 20:47:25,907 INFO L226 Difference]: Without dead ends: 3850 [2022-07-22 20:47:25,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:47:25,910 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 729 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:25,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1419 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:47:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2022-07-22 20:47:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 3712. [2022-07-22 20:47:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 2919 states have (on average 1.277834874957177) internal successors, (3730), 2970 states have internal predecessors, (3730), 396 states have call successors, (396), 313 states have call predecessors, (396), 395 states have return successors, (565), 436 states have call predecessors, (565), 395 states have call successors, (565) [2022-07-22 20:47:26,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 4691 transitions. [2022-07-22 20:47:26,086 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 4691 transitions. Word has length 79 [2022-07-22 20:47:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:26,087 INFO L495 AbstractCegarLoop]: Abstraction has 3712 states and 4691 transitions. [2022-07-22 20:47:26,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 4691 transitions. [2022-07-22 20:47:26,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 20:47:26,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:26,089 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] [2022-07-22 20:47:26,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:47:26,089 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:26,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:26,090 INFO L85 PathProgramCache]: Analyzing trace with hash -178145401, now seen corresponding path program 1 times [2022-07-22 20:47:26,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:26,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570592849] [2022-07-22 20:47:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:26,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:26,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:26,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:26,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:26,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:26,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570592849] [2022-07-22 20:47:26,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570592849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:26,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:26,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:26,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52587865] [2022-07-22 20:47:26,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:26,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:26,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:26,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:26,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:26,146 INFO L87 Difference]: Start difference. First operand 3712 states and 4691 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:27,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:27,163 INFO L93 Difference]: Finished difference Result 4615 states and 6065 transitions. [2022-07-22 20:47:27,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:47:27,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-22 20:47:27,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:27,175 INFO L225 Difference]: With dead ends: 4615 [2022-07-22 20:47:27,175 INFO L226 Difference]: Without dead ends: 4199 [2022-07-22 20:47:27,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:47:27,178 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 726 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:27,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1411 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:47:27,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4199 states. [2022-07-22 20:47:27,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4199 to 3979. [2022-07-22 20:47:27,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3148 states have (on average 1.292566709021601) internal successors, (4069), 3201 states have internal predecessors, (4069), 420 states have call successors, (420), 325 states have call predecessors, (420), 409 states have return successors, (597), 462 states have call predecessors, (597), 419 states have call successors, (597) [2022-07-22 20:47:27,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5086 transitions. [2022-07-22 20:47:27,373 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5086 transitions. Word has length 79 [2022-07-22 20:47:27,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:27,373 INFO L495 AbstractCegarLoop]: Abstraction has 3979 states and 5086 transitions. [2022-07-22 20:47:27,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:27,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5086 transitions. [2022-07-22 20:47:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 20:47:27,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:27,376 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] [2022-07-22 20:47:27,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:47:27,376 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:27,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:27,377 INFO L85 PathProgramCache]: Analyzing trace with hash -595542007, now seen corresponding path program 1 times [2022-07-22 20:47:27,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:27,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386369669] [2022-07-22 20:47:27,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:27,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:27,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:27,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:27,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:27,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:27,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:27,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386369669] [2022-07-22 20:47:27,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386369669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:27,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:27,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:27,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27232465] [2022-07-22 20:47:27,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:27,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:27,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:27,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:27,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:27,436 INFO L87 Difference]: Start difference. First operand 3979 states and 5086 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:28,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:28,070 INFO L93 Difference]: Finished difference Result 4872 states and 6453 transitions. [2022-07-22 20:47:28,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:47:28,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-22 20:47:28,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:28,085 INFO L225 Difference]: With dead ends: 4872 [2022-07-22 20:47:28,086 INFO L226 Difference]: Without dead ends: 4189 [2022-07-22 20:47:28,089 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 [2022-07-22 20:47:28,090 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 599 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:28,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 906 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:47:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2022-07-22 20:47:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 3979. [2022-07-22 20:47:28,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3148 states have (on average 1.2909783989834815) internal successors, (4064), 3201 states have internal predecessors, (4064), 420 states have call successors, (420), 325 states have call predecessors, (420), 409 states have return successors, (597), 462 states have call predecessors, (597), 419 states have call successors, (597) [2022-07-22 20:47:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5081 transitions. [2022-07-22 20:47:28,290 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5081 transitions. Word has length 79 [2022-07-22 20:47:28,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:28,290 INFO L495 AbstractCegarLoop]: Abstraction has 3979 states and 5081 transitions. [2022-07-22 20:47:28,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:28,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5081 transitions. [2022-07-22 20:47:28,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 20:47:28,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:28,293 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] [2022-07-22 20:47:28,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:47:28,294 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:28,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:28,294 INFO L85 PathProgramCache]: Analyzing trace with hash 83730247, now seen corresponding path program 1 times [2022-07-22 20:47:28,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:28,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155624276] [2022-07-22 20:47:28,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:28,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:28,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:28,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:28,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:28,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:28,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:28,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155624276] [2022-07-22 20:47:28,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155624276] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:28,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:28,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:28,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713608734] [2022-07-22 20:47:28,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:28,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:28,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:28,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:28,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:28,355 INFO L87 Difference]: Start difference. First operand 3979 states and 5081 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:28,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:28,940 INFO L93 Difference]: Finished difference Result 4866 states and 6427 transitions. [2022-07-22 20:47:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:47:28,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-22 20:47:28,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:28,949 INFO L225 Difference]: With dead ends: 4866 [2022-07-22 20:47:28,950 INFO L226 Difference]: Without dead ends: 4183 [2022-07-22 20:47:28,952 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 [2022-07-22 20:47:28,952 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 718 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:28,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 760 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:47:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4183 states. [2022-07-22 20:47:29,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4183 to 3979. [2022-07-22 20:47:29,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3979 states, 3148 states have (on average 1.2893900889453622) internal successors, (4059), 3201 states have internal predecessors, (4059), 420 states have call successors, (420), 325 states have call predecessors, (420), 409 states have return successors, (597), 462 states have call predecessors, (597), 419 states have call successors, (597) [2022-07-22 20:47:29,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3979 states to 3979 states and 5076 transitions. [2022-07-22 20:47:29,129 INFO L78 Accepts]: Start accepts. Automaton has 3979 states and 5076 transitions. Word has length 79 [2022-07-22 20:47:29,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:29,129 INFO L495 AbstractCegarLoop]: Abstraction has 3979 states and 5076 transitions. [2022-07-22 20:47:29,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:29,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3979 states and 5076 transitions. [2022-07-22 20:47:29,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 20:47:29,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:29,133 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] [2022-07-22 20:47:29,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:47:29,133 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:29,134 INFO L85 PathProgramCache]: Analyzing trace with hash 2045304905, now seen corresponding path program 1 times [2022-07-22 20:47:29,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:29,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868358293] [2022-07-22 20:47:29,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:29,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:29,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:29,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:29,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:29,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:29,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:29,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:29,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868358293] [2022-07-22 20:47:29,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868358293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:29,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:29,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:29,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823608347] [2022-07-22 20:47:29,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:29,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:29,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:29,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:29,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:29,190 INFO L87 Difference]: Start difference. First operand 3979 states and 5076 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:30,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:30,301 INFO L93 Difference]: Finished difference Result 5687 states and 7616 transitions. [2022-07-22 20:47:30,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:47:30,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-22 20:47:30,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:30,311 INFO L225 Difference]: With dead ends: 5687 [2022-07-22 20:47:30,312 INFO L226 Difference]: Without dead ends: 5004 [2022-07-22 20:47:30,314 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 [2022-07-22 20:47:30,315 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 804 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:30,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1379 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:47:30,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5004 states. [2022-07-22 20:47:30,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5004 to 4490. [2022-07-22 20:47:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 3587 states have (on average 1.3100083635349875) internal successors, (4699), 3644 states have internal predecessors, (4699), 464 states have call successors, (464), 349 states have call predecessors, (464), 437 states have return successors, (663), 510 states have call predecessors, (663), 463 states have call successors, (663) [2022-07-22 20:47:30,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 5826 transitions. [2022-07-22 20:47:30,536 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 5826 transitions. Word has length 79 [2022-07-22 20:47:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:30,537 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 5826 transitions. [2022-07-22 20:47:30,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:30,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 5826 transitions. [2022-07-22 20:47:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 20:47:30,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:30,540 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] [2022-07-22 20:47:30,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:47:30,541 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:30,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:30,541 INFO L85 PathProgramCache]: Analyzing trace with hash -2047838457, now seen corresponding path program 1 times [2022-07-22 20:47:30,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:30,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505604131] [2022-07-22 20:47:30,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:30,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:30,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:30,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:30,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:30,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:30,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:30,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505604131] [2022-07-22 20:47:30,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505604131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:30,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:30,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:30,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885878223] [2022-07-22 20:47:30,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:30,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:30,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:30,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:30,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:30,599 INFO L87 Difference]: Start difference. First operand 4490 states and 5826 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:31,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:31,198 INFO L93 Difference]: Finished difference Result 5993 states and 8077 transitions. [2022-07-22 20:47:31,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:47:31,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-22 20:47:31,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:31,209 INFO L225 Difference]: With dead ends: 5993 [2022-07-22 20:47:31,210 INFO L226 Difference]: Without dead ends: 4799 [2022-07-22 20:47:31,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:47:31,214 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 704 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:31,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 758 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:47:31,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-07-22 20:47:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4490. [2022-07-22 20:47:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 3587 states have (on average 1.307499303038751) internal successors, (4690), 3644 states have internal predecessors, (4690), 464 states have call successors, (464), 349 states have call predecessors, (464), 437 states have return successors, (663), 510 states have call predecessors, (663), 463 states have call successors, (663) [2022-07-22 20:47:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 5817 transitions. [2022-07-22 20:47:31,489 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 5817 transitions. Word has length 79 [2022-07-22 20:47:31,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:31,489 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 5817 transitions. [2022-07-22 20:47:31,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:31,490 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 5817 transitions. [2022-07-22 20:47:31,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 20:47:31,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:31,493 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] [2022-07-22 20:47:31,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 20:47:31,493 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1614109371, now seen corresponding path program 1 times [2022-07-22 20:47:31,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:31,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74166111] [2022-07-22 20:47:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:31,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:31,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:31,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:31,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:31,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:31,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74166111] [2022-07-22 20:47:31,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74166111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:31,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:31,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:31,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343088793] [2022-07-22 20:47:31,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:31,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:31,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:31,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:31,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:31,557 INFO L87 Difference]: Start difference. First operand 4490 states and 5817 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:32,467 INFO L93 Difference]: Finished difference Result 6494 states and 8795 transitions. [2022-07-22 20:47:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:47:32,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-22 20:47:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:32,480 INFO L225 Difference]: With dead ends: 6494 [2022-07-22 20:47:32,480 INFO L226 Difference]: Without dead ends: 5301 [2022-07-22 20:47:32,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:47:32,484 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 457 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:32,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 1164 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:47:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2022-07-22 20:47:32,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 4517. [2022-07-22 20:47:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 3614 states have (on average 1.305201992252352) internal successors, (4717), 3671 states have internal predecessors, (4717), 464 states have call successors, (464), 349 states have call predecessors, (464), 437 states have return successors, (663), 510 states have call predecessors, (663), 463 states have call successors, (663) [2022-07-22 20:47:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 5844 transitions. [2022-07-22 20:47:32,691 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 5844 transitions. Word has length 79 [2022-07-22 20:47:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:32,692 INFO L495 AbstractCegarLoop]: Abstraction has 4517 states and 5844 transitions. [2022-07-22 20:47:32,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 5844 transitions. [2022-07-22 20:47:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 20:47:32,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:32,695 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] [2022-07-22 20:47:32,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:47:32,695 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:32,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1629628089, now seen corresponding path program 1 times [2022-07-22 20:47:32,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:32,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489901956] [2022-07-22 20:47:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:32,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:32,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:32,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:32,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:32,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:32,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:32,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:32,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:32,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489901956] [2022-07-22 20:47:32,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489901956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:32,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:32,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:32,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227786006] [2022-07-22 20:47:32,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:32,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:32,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:32,783 INFO L87 Difference]: Start difference. First operand 4517 states and 5844 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:34,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:34,413 INFO L93 Difference]: Finished difference Result 8926 states and 12553 transitions. [2022-07-22 20:47:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 20:47:34,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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 79 [2022-07-22 20:47:34,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:34,434 INFO L225 Difference]: With dead ends: 8926 [2022-07-22 20:47:34,434 INFO L226 Difference]: Without dead ends: 7706 [2022-07-22 20:47:34,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-22 20:47:34,441 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 1530 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:34,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1553 Valid, 1260 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:47:34,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7706 states. [2022-07-22 20:47:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7706 to 6883. [2022-07-22 20:47:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6883 states, 5637 states have (on average 1.35249246052865) internal successors, (7624), 5725 states have internal predecessors, (7624), 677 states have call successors, (677), 463 states have call predecessors, (677), 567 states have return successors, (1012), 708 states have call predecessors, (1012), 676 states have call successors, (1012) [2022-07-22 20:47:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 9313 transitions. [2022-07-22 20:47:34,818 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 9313 transitions. Word has length 79 [2022-07-22 20:47:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:34,818 INFO L495 AbstractCegarLoop]: Abstraction has 6883 states and 9313 transitions. [2022-07-22 20:47:34,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-22 20:47:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 9313 transitions. [2022-07-22 20:47:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 20:47:34,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:34,822 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-22 20:47:34,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:47:34,822 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:34,823 INFO L85 PathProgramCache]: Analyzing trace with hash -40676858, now seen corresponding path program 1 times [2022-07-22 20:47:34,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:34,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126060885] [2022-07-22 20:47:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:34,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:34,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:34,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:34,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:34,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:34,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:34,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:34,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:47:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:47:34,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:34,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126060885] [2022-07-22 20:47:34,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126060885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:34,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:34,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:47:34,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135231402] [2022-07-22 20:47:34,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:34,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:47:34,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:34,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:47:34,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:34,896 INFO L87 Difference]: Start difference. First operand 6883 states and 9313 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:47:36,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:36,210 INFO L93 Difference]: Finished difference Result 13587 states and 17596 transitions. [2022-07-22 20:47:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 20:47:36,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-22 20:47:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:36,237 INFO L225 Difference]: With dead ends: 13587 [2022-07-22 20:47:36,237 INFO L226 Difference]: Without dead ends: 9006 [2022-07-22 20:47:36,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-22 20:47:36,248 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 697 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:36,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1494 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:47:36,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9006 states. [2022-07-22 20:47:36,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9006 to 8730. [2022-07-22 20:47:36,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8730 states, 7037 states have (on average 1.320306948983942) internal successors, (9291), 7170 states have internal predecessors, (9291), 875 states have call successors, (875), 631 states have call predecessors, (875), 816 states have return successors, (1392), 942 states have call predecessors, (1392), 874 states have call successors, (1392) [2022-07-22 20:47:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8730 states to 8730 states and 11558 transitions. [2022-07-22 20:47:36,760 INFO L78 Accepts]: Start accepts. Automaton has 8730 states and 11558 transitions. Word has length 84 [2022-07-22 20:47:36,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:36,761 INFO L495 AbstractCegarLoop]: Abstraction has 8730 states and 11558 transitions. [2022-07-22 20:47:36,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:47:36,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8730 states and 11558 transitions. [2022-07-22 20:47:36,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 20:47:36,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:36,766 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:36,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:47:36,767 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:36,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:36,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1005107396, now seen corresponding path program 1 times [2022-07-22 20:47:36,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:36,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35680855] [2022-07-22 20:47:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:36,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:36,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:36,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:36,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:36,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:36,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:36,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:36,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 20:47:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 20:47:36,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:36,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35680855] [2022-07-22 20:47:36,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35680855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:36,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:36,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:47:36,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535352336] [2022-07-22 20:47:36,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:36,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:47:36,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:36,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:47:36,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:47:36,826 INFO L87 Difference]: Start difference. First operand 8730 states and 11558 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) [2022-07-22 20:47:38,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:38,022 INFO L93 Difference]: Finished difference Result 12671 states and 16344 transitions. [2022-07-22 20:47:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 20:47:38,023 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 93 [2022-07-22 20:47:38,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:38,043 INFO L225 Difference]: With dead ends: 12671 [2022-07-22 20:47:38,043 INFO L226 Difference]: Without dead ends: 8208 [2022-07-22 20:47:38,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-22 20:47:38,053 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1521 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:38,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 1343 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:47:38,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8208 states. [2022-07-22 20:47:38,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8208 to 7896. [2022-07-22 20:47:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7896 states, 6403 states have (on average 1.3218803685772293) internal successors, (8464), 6515 states have internal predecessors, (8464), 784 states have call successors, (784), 554 states have call predecessors, (784), 707 states have return successors, (1172), 840 states have call predecessors, (1172), 783 states have call successors, (1172) [2022-07-22 20:47:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 10420 transitions. [2022-07-22 20:47:38,526 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 10420 transitions. Word has length 93 [2022-07-22 20:47:38,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:38,527 INFO L495 AbstractCegarLoop]: Abstraction has 7896 states and 10420 transitions. [2022-07-22 20:47:38,527 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) [2022-07-22 20:47:38,527 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 10420 transitions. [2022-07-22 20:47:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-22 20:47:38,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:38,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:38,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 20:47:38,538 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:38,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:38,538 INFO L85 PathProgramCache]: Analyzing trace with hash -834500451, now seen corresponding path program 1 times [2022-07-22 20:47:38,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:38,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828670112] [2022-07-22 20:47:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:38,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:38,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:38,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:38,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:38,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:38,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:47:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:38,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:47:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:38,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:47:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 20:47:38,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:38,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828670112] [2022-07-22 20:47:38,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828670112] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:47:38,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604464643] [2022-07-22 20:47:38,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:38,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:38,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:47:38,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:47:38,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 20:47:38,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:38,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:47:38,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:47:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 20:47:38,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:47:38,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604464643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:38,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:47:38,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 20:47:38,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266015912] [2022-07-22 20:47:38,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:38,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:47:38,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:38,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:47:38,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:38,777 INFO L87 Difference]: Start difference. First operand 7896 states and 10420 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:47:39,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:39,375 INFO L93 Difference]: Finished difference Result 14927 states and 20872 transitions. [2022-07-22 20:47:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:47:39,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 128 [2022-07-22 20:47:39,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:39,408 INFO L225 Difference]: With dead ends: 14927 [2022-07-22 20:47:39,409 INFO L226 Difference]: Without dead ends: 11341 [2022-07-22 20:47:39,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:39,421 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 298 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:39,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 555 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:47:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11341 states. [2022-07-22 20:47:40,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11341 to 11283. [2022-07-22 20:47:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11283 states, 9308 states have (on average 1.3579716373012463) internal successors, (12640), 9459 states have internal predecessors, (12640), 1074 states have call successors, (1074), 722 states have call predecessors, (1074), 899 states have return successors, (1611), 1115 states have call predecessors, (1611), 1073 states have call successors, (1611) [2022-07-22 20:47:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11283 states to 11283 states and 15325 transitions. [2022-07-22 20:47:40,127 INFO L78 Accepts]: Start accepts. Automaton has 11283 states and 15325 transitions. Word has length 128 [2022-07-22 20:47:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:40,127 INFO L495 AbstractCegarLoop]: Abstraction has 11283 states and 15325 transitions. [2022-07-22 20:47:40,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:47:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 11283 states and 15325 transitions. [2022-07-22 20:47:40,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-22 20:47:40,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:40,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:40,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:47:40,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-22 20:47:40,358 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:40,359 INFO L85 PathProgramCache]: Analyzing trace with hash 2033886077, now seen corresponding path program 1 times [2022-07-22 20:47:40,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:40,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179590321] [2022-07-22 20:47:40,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:40,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:40,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:40,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:40,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:40,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:40,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:47:40,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:40,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:47:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:47:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-22 20:47:40,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:40,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179590321] [2022-07-22 20:47:40,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179590321] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:47:40,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83559861] [2022-07-22 20:47:40,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:40,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:40,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:47:40,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:47:40,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 20:47:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:40,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:47:40,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:47:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 20:47:40,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:47:40,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83559861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:40,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:47:40,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:47:40,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003040260] [2022-07-22 20:47:40,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:40,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:47:40,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:40,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:47:40,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:40,543 INFO L87 Difference]: Start difference. First operand 11283 states and 15325 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:47:41,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:41,504 INFO L93 Difference]: Finished difference Result 24946 states and 35355 transitions. [2022-07-22 20:47:41,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:47:41,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 128 [2022-07-22 20:47:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:41,536 INFO L225 Difference]: With dead ends: 24946 [2022-07-22 20:47:41,536 INFO L226 Difference]: Without dead ends: 12552 [2022-07-22 20:47:41,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:41,559 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 191 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:41,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 891 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:47:41,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12552 states. [2022-07-22 20:47:42,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12552 to 12552. [2022-07-22 20:47:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12552 states, 10402 states have (on average 1.3653143626225726) internal successors, (14202), 10561 states have internal predecessors, (14202), 1181 states have call successors, (1181), 782 states have call predecessors, (1181), 967 states have return successors, (1785), 1222 states have call predecessors, (1785), 1180 states have call successors, (1785) [2022-07-22 20:47:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 17168 transitions. [2022-07-22 20:47:42,316 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 17168 transitions. Word has length 128 [2022-07-22 20:47:42,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:42,316 INFO L495 AbstractCegarLoop]: Abstraction has 12552 states and 17168 transitions. [2022-07-22 20:47:42,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-22 20:47:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 17168 transitions. [2022-07-22 20:47:42,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:47:42,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:42,329 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:42,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 20:47:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:42,544 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash 45573472, now seen corresponding path program 1 times [2022-07-22 20:47:42,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:42,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721006168] [2022-07-22 20:47:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:42,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:47:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 20:47:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:47:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 20:47:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:47:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:47:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 20:47:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-22 20:47:42,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:42,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721006168] [2022-07-22 20:47:42,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721006168] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:47:42,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809752033] [2022-07-22 20:47:42,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:42,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:42,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:47:42,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:47:42,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 20:47:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:42,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 20:47:42,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:47:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 20:47:42,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:47:42,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809752033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:42,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:47:42,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-22 20:47:42,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782855110] [2022-07-22 20:47:42,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:42,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:47:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:47:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 20:47:42,735 INFO L87 Difference]: Start difference. First operand 12552 states and 17168 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:47:43,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:43,240 INFO L93 Difference]: Finished difference Result 14706 states and 19787 transitions. [2022-07-22 20:47:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:47:43,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-22 20:47:43,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:43,268 INFO L225 Difference]: With dead ends: 14706 [2022-07-22 20:47:43,268 INFO L226 Difference]: Without dead ends: 10435 [2022-07-22 20:47:43,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:47:43,279 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 34 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:43,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1715 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:47:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2022-07-22 20:47:43,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 10310. [2022-07-22 20:47:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10310 states, 8734 states have (on average 1.3929471032745593) internal successors, (12166), 8841 states have internal predecessors, (12166), 907 states have call successors, (907), 550 states have call predecessors, (907), 667 states have return successors, (1388), 926 states have call predecessors, (1388), 906 states have call successors, (1388) [2022-07-22 20:47:44,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10310 states to 10310 states and 14461 transitions. [2022-07-22 20:47:44,014 INFO L78 Accepts]: Start accepts. Automaton has 10310 states and 14461 transitions. Word has length 145 [2022-07-22 20:47:44,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:44,015 INFO L495 AbstractCegarLoop]: Abstraction has 10310 states and 14461 transitions. [2022-07-22 20:47:44,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:47:44,015 INFO L276 IsEmpty]: Start isEmpty. Operand 10310 states and 14461 transitions. [2022-07-22 20:47:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 20:47:44,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:44,027 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:44,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 20:47:44,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:44,228 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:44,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:44,228 INFO L85 PathProgramCache]: Analyzing trace with hash 37593864, now seen corresponding path program 1 times [2022-07-22 20:47:44,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:44,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845993961] [2022-07-22 20:47:44,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:44,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:47:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 20:47:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 20:47:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 20:47:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 20:47:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 20:47:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 20:47:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 20:47:44,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:44,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845993961] [2022-07-22 20:47:44,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845993961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:44,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:44,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:47:44,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848167475] [2022-07-22 20:47:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:44,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:47:44,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:44,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:47:44,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:47:44,296 INFO L87 Difference]: Start difference. First operand 10310 states and 14461 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 20:47:45,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:45,078 INFO L93 Difference]: Finished difference Result 10367 states and 14521 transitions. [2022-07-22 20:47:45,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:47:45,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-22 20:47:45,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:45,107 INFO L225 Difference]: With dead ends: 10367 [2022-07-22 20:47:45,107 INFO L226 Difference]: Without dead ends: 9918 [2022-07-22 20:47:45,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:47:45,114 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 516 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:45,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 744 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:47:45,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9918 states. [2022-07-22 20:47:45,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9918 to 9864. [2022-07-22 20:47:45,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9864 states, 8387 states have (on average 1.4016930964588052) internal successors, (11756), 8488 states have internal predecessors, (11756), 861 states have call successors, (861), 510 states have call predecessors, (861), 614 states have return successors, (1319), 873 states have call predecessors, (1319), 860 states have call successors, (1319) [2022-07-22 20:47:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9864 states to 9864 states and 13936 transitions. [2022-07-22 20:47:45,680 INFO L78 Accepts]: Start accepts. Automaton has 9864 states and 13936 transitions. Word has length 147 [2022-07-22 20:47:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:45,680 INFO L495 AbstractCegarLoop]: Abstraction has 9864 states and 13936 transitions. [2022-07-22 20:47:45,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 20:47:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 9864 states and 13936 transitions. [2022-07-22 20:47:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 20:47:45,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:45,690 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:45,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 20:47:45,691 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:45,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:45,691 INFO L85 PathProgramCache]: Analyzing trace with hash 644674118, now seen corresponding path program 1 times [2022-07-22 20:47:45,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:45,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993324594] [2022-07-22 20:47:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:45,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:47:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:47:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 20:47:45,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:47:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 20:47:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 20:47:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 20:47:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 20:47:45,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:45,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993324594] [2022-07-22 20:47:45,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993324594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:45,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:45,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103099237] [2022-07-22 20:47:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:45,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:45,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:45,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:45,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:45,780 INFO L87 Difference]: Start difference. First operand 9864 states and 13936 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 20:47:46,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:46,616 INFO L93 Difference]: Finished difference Result 11341 states and 15735 transitions. [2022-07-22 20:47:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 20:47:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-22 20:47:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:46,640 INFO L225 Difference]: With dead ends: 11341 [2022-07-22 20:47:46,640 INFO L226 Difference]: Without dead ends: 9985 [2022-07-22 20:47:46,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:47:46,648 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 312 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:46,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1235 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:47:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2022-07-22 20:47:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9793. [2022-07-22 20:47:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9793 states, 8336 states have (on average 1.4019913627639156) internal successors, (11687), 8436 states have internal predecessors, (11687), 854 states have call successors, (854), 507 states have call predecessors, (854), 601 states have return successors, (1301), 857 states have call predecessors, (1301), 853 states have call successors, (1301) [2022-07-22 20:47:47,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9793 states to 9793 states and 13842 transitions. [2022-07-22 20:47:47,216 INFO L78 Accepts]: Start accepts. Automaton has 9793 states and 13842 transitions. Word has length 159 [2022-07-22 20:47:47,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:47,216 INFO L495 AbstractCegarLoop]: Abstraction has 9793 states and 13842 transitions. [2022-07-22 20:47:47,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 20:47:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 9793 states and 13842 transitions. [2022-07-22 20:47:47,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 20:47:47,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:47,228 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:47,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 20:47:47,228 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:47,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:47,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1611156349, now seen corresponding path program 1 times [2022-07-22 20:47:47,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:47,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053410883] [2022-07-22 20:47:47,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:47,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:47:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:47:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 20:47:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 20:47:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 20:47:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 20:47:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:47:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 20:47:47,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:47,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053410883] [2022-07-22 20:47:47,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053410883] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:47:47,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127289175] [2022-07-22 20:47:47,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:47,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:47,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:47:47,319 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:47:47,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 20:47:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:47,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 20:47:47,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:47:47,522 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 20:47:47,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:47:47,714 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 20:47:47,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127289175] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:47:47,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:47:47,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-22 20:47:47,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626189602] [2022-07-22 20:47:47,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:47:47,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 20:47:47,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:47,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 20:47:47,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:47:47,717 INFO L87 Difference]: Start difference. First operand 9793 states and 13842 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-22 20:47:48,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:48,989 INFO L93 Difference]: Finished difference Result 11765 states and 16295 transitions. [2022-07-22 20:47:48,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 20:47:48,991 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-22 20:47:48,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:49,014 INFO L225 Difference]: With dead ends: 11765 [2022-07-22 20:47:49,014 INFO L226 Difference]: Without dead ends: 10331 [2022-07-22 20:47:49,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 355 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-22 20:47:49,022 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1008 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:49,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1328 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:47:49,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10331 states. [2022-07-22 20:47:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10331 to 10181. [2022-07-22 20:47:49,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10181 states, 8613 states have (on average 1.3918495297805642) internal successors, (11988), 8720 states have internal predecessors, (11988), 908 states have call successors, (908), 557 states have call predecessors, (908), 658 states have return successors, (1414), 911 states have call predecessors, (1414), 907 states have call successors, (1414) [2022-07-22 20:47:49,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10181 states to 10181 states and 14310 transitions. [2022-07-22 20:47:49,649 INFO L78 Accepts]: Start accepts. Automaton has 10181 states and 14310 transitions. Word has length 162 [2022-07-22 20:47:49,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:49,650 INFO L495 AbstractCegarLoop]: Abstraction has 10181 states and 14310 transitions. [2022-07-22 20:47:49,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-22 20:47:49,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10181 states and 14310 transitions. [2022-07-22 20:47:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-22 20:47:49,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:49,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:49,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-22 20:47:49,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-22 20:47:49,865 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:49,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:49,865 INFO L85 PathProgramCache]: Analyzing trace with hash 948222591, now seen corresponding path program 1 times [2022-07-22 20:47:49,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:49,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284875000] [2022-07-22 20:47:49,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:49,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:49,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:49,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:49,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:49,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:47:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:49,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:47:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:49,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 20:47:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:49,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:47:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-22 20:47:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-22 20:47:49,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:49,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284875000] [2022-07-22 20:47:49,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284875000] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:47:49,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609664253] [2022-07-22 20:47:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:49,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:49,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:47:49,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:47:49,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 20:47:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:50,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:47:50,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:47:50,154 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 20:47:50,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:47:50,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609664253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:50,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:47:50,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 20:47:50,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516246284] [2022-07-22 20:47:50,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:50,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:47:50,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:50,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:47:50,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:50,156 INFO L87 Difference]: Start difference. First operand 10181 states and 14310 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 20:47:51,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:51,039 INFO L93 Difference]: Finished difference Result 26322 states and 38179 transitions. [2022-07-22 20:47:51,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:47:51,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2022-07-22 20:47:51,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:51,087 INFO L225 Difference]: With dead ends: 26322 [2022-07-22 20:47:51,087 INFO L226 Difference]: Without dead ends: 18080 [2022-07-22 20:47:51,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:51,112 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 251 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:51,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 553 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:47:51,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18080 states. [2022-07-22 20:47:52,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18080 to 17946. [2022-07-22 20:47:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17946 states, 15285 states have (on average 1.4103369316323193) internal successors, (21557), 15478 states have internal predecessors, (21557), 1553 states have call successors, (1553), 949 states have call predecessors, (1553), 1106 states have return successors, (2399), 1526 states have call predecessors, (2399), 1552 states have call successors, (2399) [2022-07-22 20:47:52,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17946 states to 17946 states and 25509 transitions. [2022-07-22 20:47:52,443 INFO L78 Accepts]: Start accepts. Automaton has 17946 states and 25509 transitions. Word has length 166 [2022-07-22 20:47:52,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:52,443 INFO L495 AbstractCegarLoop]: Abstraction has 17946 states and 25509 transitions. [2022-07-22 20:47:52,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 20:47:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 17946 states and 25509 transitions. [2022-07-22 20:47:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-22 20:47:52,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:52,462 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:52,480 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 20:47:52,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-22 20:47:52,663 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash -104058437, now seen corresponding path program 1 times [2022-07-22 20:47:52,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:52,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732638395] [2022-07-22 20:47:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:52,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:52,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:47:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:47:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:52,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:47:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:47:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:47:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 20:47:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:47:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-22 20:47:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-22 20:47:52,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:52,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732638395] [2022-07-22 20:47:52,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732638395] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:47:52,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432849391] [2022-07-22 20:47:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:52,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:52,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:47:52,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:47:52,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 20:47:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:52,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:47:52,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:47:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-22 20:47:52,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:47:52,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432849391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:52,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:47:52,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 20:47:52,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416450583] [2022-07-22 20:47:52,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:52,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:47:52,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:52,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:47:52,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:52,977 INFO L87 Difference]: Start difference. First operand 17946 states and 25509 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 20:47:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:54,242 INFO L93 Difference]: Finished difference Result 35267 states and 51145 transitions. [2022-07-22 20:47:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:47:54,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 166 [2022-07-22 20:47:54,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:54,308 INFO L225 Difference]: With dead ends: 35267 [2022-07-22 20:47:54,309 INFO L226 Difference]: Without dead ends: 25289 [2022-07-22 20:47:54,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:54,336 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 252 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:54,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 558 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:47:54,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25289 states. [2022-07-22 20:47:55,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25289 to 25095. [2022-07-22 20:47:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25095 states, 21444 states have (on average 1.4185786233911584) internal successors, (30420), 21705 states have internal predecessors, (30420), 2140 states have call successors, (2140), 1304 states have call predecessors, (2140), 1509 states have return successors, (3249), 2093 states have call predecessors, (3249), 2139 states have call successors, (3249) [2022-07-22 20:47:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25095 states to 25095 states and 35809 transitions. [2022-07-22 20:47:55,767 INFO L78 Accepts]: Start accepts. Automaton has 25095 states and 35809 transitions. Word has length 166 [2022-07-22 20:47:55,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:55,768 INFO L495 AbstractCegarLoop]: Abstraction has 25095 states and 35809 transitions. [2022-07-22 20:47:55,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-22 20:47:55,768 INFO L276 IsEmpty]: Start isEmpty. Operand 25095 states and 35809 transitions. [2022-07-22 20:47:55,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:47:55,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:55,789 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:55,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 20:47:56,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:56,004 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:56,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:56,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1396720151, now seen corresponding path program 1 times [2022-07-22 20:47:56,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:56,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719986823] [2022-07-22 20:47:56,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:56,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:47:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:47:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 20:47:56,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 20:47:56,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:47:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 20:47:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 20:47:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:47:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 20:47:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 20:47:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:47:56,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-22 20:47:56,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:56,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719986823] [2022-07-22 20:47:56,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719986823] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:47:56,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712043738] [2022-07-22 20:47:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:56,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:56,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:47:56,057 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:47:56,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 20:47:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:47:56,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:47:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-22 20:47:56,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:47:56,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712043738] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:56,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:47:56,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:47:56,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487439826] [2022-07-22 20:47:56,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:56,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:47:56,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:56,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:47:56,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:56,263 INFO L87 Difference]: Start difference. First operand 25095 states and 35809 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 20:47:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:57,538 INFO L93 Difference]: Finished difference Result 26857 states and 37938 transitions. [2022-07-22 20:47:57,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:47:57,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 179 [2022-07-22 20:47:57,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:57,607 INFO L225 Difference]: With dead ends: 26857 [2022-07-22 20:47:57,607 INFO L226 Difference]: Without dead ends: 25102 [2022-07-22 20:47:57,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:57,626 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 33 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:57,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 712 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:47:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25102 states. [2022-07-22 20:47:59,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25102 to 25095. [2022-07-22 20:47:59,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25095 states, 21444 states have (on average 1.4182988248461108) internal successors, (30414), 21705 states have internal predecessors, (30414), 2140 states have call successors, (2140), 1304 states have call predecessors, (2140), 1509 states have return successors, (3249), 2093 states have call predecessors, (3249), 2139 states have call successors, (3249) [2022-07-22 20:47:59,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25095 states to 25095 states and 35803 transitions. [2022-07-22 20:47:59,175 INFO L78 Accepts]: Start accepts. Automaton has 25095 states and 35803 transitions. Word has length 179 [2022-07-22 20:47:59,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:59,176 INFO L495 AbstractCegarLoop]: Abstraction has 25095 states and 35803 transitions. [2022-07-22 20:47:59,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 20:47:59,176 INFO L276 IsEmpty]: Start isEmpty. Operand 25095 states and 35803 transitions. [2022-07-22 20:47:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-22 20:47:59,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:59,201 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:47:59,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-22 20:47:59,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-07-22 20:47:59,415 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash -642490676, now seen corresponding path program 1 times [2022-07-22 20:47:59,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:59,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845645598] [2022-07-22 20:47:59,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:59,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:47:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-22 20:47:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 20:47:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:47:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 20:47:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:47:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 20:47:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 20:47:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:47:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-22 20:47:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 20:47:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-22 20:47:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-07-22 20:47:59,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:59,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845645598] [2022-07-22 20:47:59,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845645598] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:47:59,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375602801] [2022-07-22 20:47:59,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:59,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:47:59,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:47:59,481 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:47:59,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 20:47:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 20:47:59,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:47:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-22 20:47:59,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:47:59,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375602801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:59,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:47:59,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-22 20:47:59,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129935490] [2022-07-22 20:47:59,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:59,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:47:59,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:59,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:47:59,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:47:59,610 INFO L87 Difference]: Start difference. First operand 25095 states and 35803 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 20:48:01,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:01,214 INFO L93 Difference]: Finished difference Result 26922 states and 38000 transitions. [2022-07-22 20:48:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:48:01,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 179 [2022-07-22 20:48:01,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:01,282 INFO L225 Difference]: With dead ends: 26922 [2022-07-22 20:48:01,282 INFO L226 Difference]: Without dead ends: 24807 [2022-07-22 20:48:01,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-22 20:48:01,299 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 442 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:01,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 695 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:48:01,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24807 states. [2022-07-22 20:48:02,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24807 to 24765. [2022-07-22 20:48:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24765 states, 21191 states have (on average 1.4206030862158463) internal successors, (30104), 21445 states have internal predecessors, (30104), 2105 states have call successors, (2105), 1273 states have call predecessors, (2105), 1467 states have return successors, (3175), 2054 states have call predecessors, (3175), 2104 states have call successors, (3175) [2022-07-22 20:48:02,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24765 states to 24765 states and 35384 transitions. [2022-07-22 20:48:02,806 INFO L78 Accepts]: Start accepts. Automaton has 24765 states and 35384 transitions. Word has length 179 [2022-07-22 20:48:02,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:02,806 INFO L495 AbstractCegarLoop]: Abstraction has 24765 states and 35384 transitions. [2022-07-22 20:48:02,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 20:48:02,806 INFO L276 IsEmpty]: Start isEmpty. Operand 24765 states and 35384 transitions. [2022-07-22 20:48:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-22 20:48:02,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:02,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:02,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 20:48:03,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:03,035 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:03,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:03,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1330235084, now seen corresponding path program 1 times [2022-07-22 20:48:03,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:03,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541132513] [2022-07-22 20:48:03,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:03,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:48:03,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:48:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:48:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:48:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 20:48:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 20:48:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 20:48:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 20:48:03,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541132513] [2022-07-22 20:48:03,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541132513] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:48:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548815377] [2022-07-22 20:48:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:03,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:03,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:03,140 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:48:03,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 20:48:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 20:48:03,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:48:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 20:48:03,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:48:03,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548815377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:03,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:48:03,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:48:03,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275296064] [2022-07-22 20:48:03,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:03,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:48:03,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:03,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:48:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:03,308 INFO L87 Difference]: Start difference. First operand 24765 states and 35384 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 20:48:04,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:04,760 INFO L93 Difference]: Finished difference Result 46003 states and 66112 transitions. [2022-07-22 20:48:04,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:48:04,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2022-07-22 20:48:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:04,817 INFO L225 Difference]: With dead ends: 46003 [2022-07-22 20:48:04,817 INFO L226 Difference]: Without dead ends: 22848 [2022-07-22 20:48:04,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:04,863 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 275 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:04,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 392 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:48:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22848 states. [2022-07-22 20:48:06,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22848 to 22798. [2022-07-22 20:48:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22798 states, 19624 states have (on average 1.375407664084794) internal successors, (26991), 19806 states have internal predecessors, (26991), 1794 states have call successors, (1794), 1216 states have call predecessors, (1794), 1378 states have return successors, (2628), 1783 states have call predecessors, (2628), 1793 states have call successors, (2628) [2022-07-22 20:48:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22798 states to 22798 states and 31413 transitions. [2022-07-22 20:48:06,535 INFO L78 Accepts]: Start accepts. Automaton has 22798 states and 31413 transitions. Word has length 184 [2022-07-22 20:48:06,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:06,536 INFO L495 AbstractCegarLoop]: Abstraction has 22798 states and 31413 transitions. [2022-07-22 20:48:06,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 20:48:06,536 INFO L276 IsEmpty]: Start isEmpty. Operand 22798 states and 31413 transitions. [2022-07-22 20:48:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-22 20:48:06,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:06,560 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:06,577 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-22 20:48:06,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-22 20:48:06,760 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:06,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:06,761 INFO L85 PathProgramCache]: Analyzing trace with hash -2021171972, now seen corresponding path program 1 times [2022-07-22 20:48:06,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:06,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316670697] [2022-07-22 20:48:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:06,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:48:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:48:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:48:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:48:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 20:48:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 20:48:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 20:48:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 20:48:06,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:06,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316670697] [2022-07-22 20:48:06,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316670697] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:48:06,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18803310] [2022-07-22 20:48:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:06,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:06,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:06,849 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:48:06,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 20:48:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 20:48:06,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:48:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 20:48:07,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:48:07,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18803310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:07,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:48:07,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:48:07,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423616396] [2022-07-22 20:48:07,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:07,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:48:07,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:07,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:48:07,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:07,020 INFO L87 Difference]: Start difference. First operand 22798 states and 31413 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 20:48:08,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:08,621 INFO L93 Difference]: Finished difference Result 46333 states and 65025 transitions. [2022-07-22 20:48:08,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:48:08,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2022-07-22 20:48:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:08,690 INFO L225 Difference]: With dead ends: 46333 [2022-07-22 20:48:08,690 INFO L226 Difference]: Without dead ends: 25145 [2022-07-22 20:48:08,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:08,732 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 291 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:08,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 385 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:48:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25145 states. [2022-07-22 20:48:10,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25145 to 25135. [2022-07-22 20:48:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25135 states, 21769 states have (on average 1.3401166796821167) internal successors, (29173), 21951 states have internal predecessors, (29173), 1852 states have call successors, (1852), 1350 states have call predecessors, (1852), 1512 states have return successors, (2701), 1841 states have call predecessors, (2701), 1851 states have call successors, (2701) [2022-07-22 20:48:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25135 states to 25135 states and 33726 transitions. [2022-07-22 20:48:10,528 INFO L78 Accepts]: Start accepts. Automaton has 25135 states and 33726 transitions. Word has length 184 [2022-07-22 20:48:10,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:10,529 INFO L495 AbstractCegarLoop]: Abstraction has 25135 states and 33726 transitions. [2022-07-22 20:48:10,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-22 20:48:10,529 INFO L276 IsEmpty]: Start isEmpty. Operand 25135 states and 33726 transitions. [2022-07-22 20:48:10,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-22 20:48:10,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:10,558 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:10,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 20:48:10,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-22 20:48:10,768 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:10,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:10,768 INFO L85 PathProgramCache]: Analyzing trace with hash -898713314, now seen corresponding path program 1 times [2022-07-22 20:48:10,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:10,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213017005] [2022-07-22 20:48:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:10,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:48:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:48:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:48:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:48:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 20:48:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 20:48:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 20:48:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 20:48:10,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:10,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213017005] [2022-07-22 20:48:10,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213017005] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:48:10,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120022378] [2022-07-22 20:48:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:10,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:10,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:10,892 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:48:10,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 20:48:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:10,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 20:48:10,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:48:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 20:48:11,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:48:11,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120022378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:11,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:48:11,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:48:11,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303411985] [2022-07-22 20:48:11,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:11,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:48:11,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:11,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:48:11,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:11,017 INFO L87 Difference]: Start difference. First operand 25135 states and 33726 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 20:48:13,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:13,212 INFO L93 Difference]: Finished difference Result 50684 states and 67959 transitions. [2022-07-22 20:48:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:48:13,212 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 184 [2022-07-22 20:48:13,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:13,286 INFO L225 Difference]: With dead ends: 50684 [2022-07-22 20:48:13,286 INFO L226 Difference]: Without dead ends: 27159 [2022-07-22 20:48:13,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:13,331 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 317 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:13,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 562 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:48:13,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27159 states. [2022-07-22 20:48:15,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27159 to 26804. [2022-07-22 20:48:15,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26804 states, 23318 states have (on average 1.3106612917059781) internal successors, (30562), 23490 states have internal predecessors, (30562), 1862 states have call successors, (1862), 1440 states have call predecessors, (1862), 1622 states have return successors, (2691), 1881 states have call predecessors, (2691), 1861 states have call successors, (2691) [2022-07-22 20:48:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26804 states to 26804 states and 35115 transitions. [2022-07-22 20:48:15,518 INFO L78 Accepts]: Start accepts. Automaton has 26804 states and 35115 transitions. Word has length 184 [2022-07-22 20:48:15,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:15,518 INFO L495 AbstractCegarLoop]: Abstraction has 26804 states and 35115 transitions. [2022-07-22 20:48:15,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 20:48:15,518 INFO L276 IsEmpty]: Start isEmpty. Operand 26804 states and 35115 transitions. [2022-07-22 20:48:15,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-22 20:48:15,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:15,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:15,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 20:48:15,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-22 20:48:15,748 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:15,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:15,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1926128958, now seen corresponding path program 1 times [2022-07-22 20:48:15,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:15,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937485099] [2022-07-22 20:48:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:15,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:15,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:48:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:48:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:48:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:48:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 20:48:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 20:48:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:15,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 20:48:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 20:48:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-22 20:48:15,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:15,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937485099] [2022-07-22 20:48:15,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937485099] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:48:15,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839400015] [2022-07-22 20:48:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:15,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:15,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:15,826 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:48:15,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 20:48:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 20:48:15,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:48:15,972 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-22 20:48:15,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:48:15,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839400015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:15,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:48:15,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:48:15,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228547032] [2022-07-22 20:48:15,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:15,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:48:15,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:15,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:48:15,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:15,974 INFO L87 Difference]: Start difference. First operand 26804 states and 35115 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 20:48:19,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:19,635 INFO L93 Difference]: Finished difference Result 76438 states and 101578 transitions. [2022-07-22 20:48:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:48:19,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 185 [2022-07-22 20:48:19,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:19,782 INFO L225 Difference]: With dead ends: 76438 [2022-07-22 20:48:19,782 INFO L226 Difference]: Without dead ends: 51244 [2022-07-22 20:48:19,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:19,837 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 297 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:19,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 601 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:48:19,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51244 states. [2022-07-22 20:48:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51244 to 50932. [2022-07-22 20:48:24,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50932 states, 44469 states have (on average 1.306977894713171) internal successors, (58120), 44800 states have internal predecessors, (58120), 3437 states have call successors, (3437), 2684 states have call predecessors, (3437), 3024 states have return successors, (6180), 3463 states have call predecessors, (6180), 3436 states have call successors, (6180) [2022-07-22 20:48:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50932 states to 50932 states and 67737 transitions. [2022-07-22 20:48:24,372 INFO L78 Accepts]: Start accepts. Automaton has 50932 states and 67737 transitions. Word has length 185 [2022-07-22 20:48:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:24,372 INFO L495 AbstractCegarLoop]: Abstraction has 50932 states and 67737 transitions. [2022-07-22 20:48:24,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 20:48:24,372 INFO L276 IsEmpty]: Start isEmpty. Operand 50932 states and 67737 transitions. [2022-07-22 20:48:24,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-22 20:48:24,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:24,427 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-22 20:48:24,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 20:48:24,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-22 20:48:24,635 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:24,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash 356903296, now seen corresponding path program 1 times [2022-07-22 20:48:24,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:24,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147816245] [2022-07-22 20:48:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:24,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:48:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:48:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:48:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:48:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 20:48:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 20:48:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-22 20:48:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-22 20:48:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-22 20:48:24,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:24,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147816245] [2022-07-22 20:48:24,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147816245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:24,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:24,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:48:24,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008045445] [2022-07-22 20:48:24,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:24,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:48:24,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:24,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:48:24,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:48:24,702 INFO L87 Difference]: Start difference. First operand 50932 states and 67737 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:29,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:29,488 INFO L93 Difference]: Finished difference Result 98918 states and 131426 transitions. [2022-07-22 20:48:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:48:29,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 185 [2022-07-22 20:48:29,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:29,751 INFO L225 Difference]: With dead ends: 98918 [2022-07-22 20:48:29,751 INFO L226 Difference]: Without dead ends: 49595 [2022-07-22 20:48:29,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:48:29,805 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 481 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:29,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 657 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:48:29,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49595 states. [2022-07-22 20:48:33,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49595 to 42446. [2022-07-22 20:48:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42446 states, 37150 states have (on average 1.306514131897712) internal successors, (48537), 37608 states have internal predecessors, (48537), 2638 states have call successors, (2638), 2052 states have call predecessors, (2638), 2656 states have return successors, (5073), 2793 states have call predecessors, (5073), 2637 states have call successors, (5073) [2022-07-22 20:48:33,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42446 states to 42446 states and 56248 transitions. [2022-07-22 20:48:33,989 INFO L78 Accepts]: Start accepts. Automaton has 42446 states and 56248 transitions. Word has length 185 [2022-07-22 20:48:33,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:33,989 INFO L495 AbstractCegarLoop]: Abstraction has 42446 states and 56248 transitions. [2022-07-22 20:48:33,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 3 states have internal predecessors, (92), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 42446 states and 56248 transitions. [2022-07-22 20:48:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-22 20:48:34,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:34,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:34,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-22 20:48:34,036 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash -993571036, now seen corresponding path program 1 times [2022-07-22 20:48:34,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:34,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669458927] [2022-07-22 20:48:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:34,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:48:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:48:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:48:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:48:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 20:48:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 20:48:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-22 20:48:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,107 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-22 20:48:34,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:34,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669458927] [2022-07-22 20:48:34,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669458927] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:48:34,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264654204] [2022-07-22 20:48:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:34,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:34,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:34,109 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:48:34,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 20:48:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 20:48:34,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:48:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-07-22 20:48:34,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:48:34,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264654204] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:34,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:48:34,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:48:34,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028931610] [2022-07-22 20:48:34,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:34,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:48:34,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:48:34,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:34,250 INFO L87 Difference]: Start difference. First operand 42446 states and 56248 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 20:48:41,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:41,004 INFO L93 Difference]: Finished difference Result 120016 states and 161433 transitions. [2022-07-22 20:48:41,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:48:41,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 187 [2022-07-22 20:48:41,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:41,228 INFO L225 Difference]: With dead ends: 120016 [2022-07-22 20:48:41,228 INFO L226 Difference]: Without dead ends: 79180 [2022-07-22 20:48:41,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:41,297 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 302 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:41,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 593 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:48:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79180 states. [2022-07-22 20:48:48,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79180 to 77624. [2022-07-22 20:48:48,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77624 states, 67885 states have (on average 1.304190911099654) internal successors, (88535), 68750 states have internal predecessors, (88535), 4893 states have call successors, (4893), 3746 states have call predecessors, (4893), 4844 states have return successors, (11366), 5143 states have call predecessors, (11366), 4892 states have call successors, (11366) [2022-07-22 20:48:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77624 states to 77624 states and 104794 transitions. [2022-07-22 20:48:48,358 INFO L78 Accepts]: Start accepts. Automaton has 77624 states and 104794 transitions. Word has length 187 [2022-07-22 20:48:48,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:48,358 INFO L495 AbstractCegarLoop]: Abstraction has 77624 states and 104794 transitions. [2022-07-22 20:48:48,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-22 20:48:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 77624 states and 104794 transitions. [2022-07-22 20:48:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-22 20:48:48,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:48,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:48,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 20:48:48,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:48,647 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:48,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:48,647 INFO L85 PathProgramCache]: Analyzing trace with hash 116047974, now seen corresponding path program 1 times [2022-07-22 20:48:48,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:48,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999063621] [2022-07-22 20:48:48,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:48,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:48:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:48:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:48:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:48:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 20:48:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 20:48:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:48:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-22 20:48:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-22 20:48:48,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:48,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999063621] [2022-07-22 20:48:48,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999063621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:48,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:48,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:48:48,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112591043] [2022-07-22 20:48:48,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:48,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:48:48,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:48,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:48:48,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:48:48,704 INFO L87 Difference]: Start difference. First operand 77624 states and 104794 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:55,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:55,352 INFO L93 Difference]: Finished difference Result 145849 states and 196471 transitions. [2022-07-22 20:48:55,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:48:55,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 187 [2022-07-22 20:48:55,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:55,561 INFO L225 Difference]: With dead ends: 145849 [2022-07-22 20:48:55,562 INFO L226 Difference]: Without dead ends: 69834 [2022-07-22 20:48:55,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:48:55,686 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 479 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:55,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 655 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:48:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69834 states. [2022-07-22 20:49:01,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69834 to 62258. [2022-07-22 20:49:01,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62258 states, 54477 states have (on average 1.306496319547699) internal successors, (71174), 55287 states have internal predecessors, (71174), 3764 states have call successors, (3764), 2899 states have call predecessors, (3764), 4015 states have return successors, (8653), 4079 states have call predecessors, (8653), 3763 states have call successors, (8653) [2022-07-22 20:49:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62258 states to 62258 states and 83591 transitions. [2022-07-22 20:49:01,632 INFO L78 Accepts]: Start accepts. Automaton has 62258 states and 83591 transitions. Word has length 187 [2022-07-22 20:49:01,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:01,633 INFO L495 AbstractCegarLoop]: Abstraction has 62258 states and 83591 transitions. [2022-07-22 20:49:01,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 3 states have internal predecessors, (93), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:49:01,633 INFO L276 IsEmpty]: Start isEmpty. Operand 62258 states and 83591 transitions. [2022-07-22 20:49:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 20:49:01,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:01,707 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:01,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-22 20:49:01,707 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:01,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:01,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1770135926, now seen corresponding path program 1 times [2022-07-22 20:49:01,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:01,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922025632] [2022-07-22 20:49:01,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:01,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 20:49:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 20:49:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 20:49:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:49:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:49:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 20:49:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:49:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-22 20:49:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 20:49:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-22 20:49:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-22 20:49:01,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:01,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922025632] [2022-07-22 20:49:01,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922025632] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:49:01,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292453695] [2022-07-22 20:49:01,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:01,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:49:01,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:49:01,775 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:49:01,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 20:49:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:01,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 20:49:01,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:49:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-22 20:49:01,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:49:01,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292453695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:01,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:49:01,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-22 20:49:01,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25323575] [2022-07-22 20:49:01,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:01,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 20:49:01,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:01,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 20:49:01,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:49:01,923 INFO L87 Difference]: Start difference. First operand 62258 states and 83591 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 20:49:07,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:07,523 INFO L93 Difference]: Finished difference Result 105375 states and 146579 transitions. [2022-07-22 20:49:07,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 20:49:07,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 189 [2022-07-22 20:49:07,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:07,709 INFO L225 Difference]: With dead ends: 105375 [2022-07-22 20:49:07,709 INFO L226 Difference]: Without dead ends: 62510 [2022-07-22 20:49:07,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:49:07,806 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 158 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:07,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 843 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:49:07,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62510 states.