./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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.09.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2cb37d56f61ec273f723a733aad4526e011a3841f34b26767a03fdc541dd1ee3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:07:05,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:07:05,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:07:05,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:07:05,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:07:05,927 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:07:05,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:07:05,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:07:05,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:07:05,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:07:05,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:07:05,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:07:05,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:07:05,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:07:05,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:07:05,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:07:05,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:07:05,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:07:05,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:07:05,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:07:05,959 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:07:05,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:07:05,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:07:05,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:07:05,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:07:05,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:07:05,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:07:05,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:07:05,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:07:05,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:07:05,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:07:05,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:07:05,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:07:05,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:07:05,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:07:05,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:07:05,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:07:05,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:07:05,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:07:05,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:07:05,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:07:05,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:07:05,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:07:06,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:07:06,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:07:06,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:07:06,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:07:06,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:07:06,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:07:06,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:07:06,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:07:06,023 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:07:06,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:07:06,023 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:07:06,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:07:06,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:07:06,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:07:06,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:07:06,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:07:06,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:07:06,025 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:07:06,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:07:06,025 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:07:06,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:07:06,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:07:06,025 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:07:06,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:07:06,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:07:06,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:07:06,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:07:06,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:07:06,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:07:06,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:07:06,026 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:07:06,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:07:06,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:07:06,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2cb37d56f61ec273f723a733aad4526e011a3841f34b26767a03fdc541dd1ee3 [2022-07-21 08:07:06,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:07:06,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:07:06,340 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:07:06,341 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:07:06,342 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:07:06,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c [2022-07-21 08:07:06,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/782e55737/8108c3d944444085988d183483de4737/FLAGe918c7e22 [2022-07-21 08:07:06,888 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:07:06,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c [2022-07-21 08:07:06,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/782e55737/8108c3d944444085988d183483de4737/FLAGe918c7e22 [2022-07-21 08:07:07,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/782e55737/8108c3d944444085988d183483de4737 [2022-07-21 08:07:07,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:07:07,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:07:07,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:07:07,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:07:07,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:07:07,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d9e6df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07, skipping insertion in model container [2022-07-21 08:07:07,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:07:07,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:07:07,557 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.09.cil-1.c[914,927] [2022-07-21 08:07:07,624 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.09.cil-1.c[7115,7128] [2022-07-21 08:07:07,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:07:07,732 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:07:07,740 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.09.cil-1.c[914,927] [2022-07-21 08:07:07,759 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.09.cil-1.c[7115,7128] [2022-07-21 08:07:07,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:07:07,820 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:07:07,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07 WrapperNode [2022-07-21 08:07:07,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:07:07,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:07:07,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:07:07,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:07:07,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,870 INFO L137 Inliner]: procedures = 71, calls = 84, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 866 [2022-07-21 08:07:07,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:07:07,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:07:07,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:07:07,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:07:07,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:07:07,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:07:07,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:07:07,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:07:07,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07" (1/1) ... [2022-07-21 08:07:07,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:07:07,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:07:07,966 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) [2022-07-21 08:07:07,981 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 [2022-07-21 08:07:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:07:08,010 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:07:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:07:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-21 08:07:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-21 08:07:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:07:08,012 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:07:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:07:08,012 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:07:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-21 08:07:08,012 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-21 08:07:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:07:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:07:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:07:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:07:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-21 08:07:08,013 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-21 08:07:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-21 08:07:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-21 08:07:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-21 08:07:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-21 08:07:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:07:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:07:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:07:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:07:08,014 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:07:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-21 08:07:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-21 08:07:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:07:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:07:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:07:08,015 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:07:08,154 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:07:08,155 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:07:08,744 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:07:08,757 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:07:08,760 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-21 08:07:08,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:07:08 BoogieIcfgContainer [2022-07-21 08:07:08,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:07:08,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:07:08,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:07:08,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:07:08,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:07:07" (1/3) ... [2022-07-21 08:07:08,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2315916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:07:08, skipping insertion in model container [2022-07-21 08:07:08,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:07:07" (2/3) ... [2022-07-21 08:07:08,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2315916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:07:08, skipping insertion in model container [2022-07-21 08:07:08,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:07:08" (3/3) ... [2022-07-21 08:07:08,768 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.09.cil-1.c [2022-07-21 08:07:08,777 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:07:08,777 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:07:08,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:07:08,838 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@4738d04, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@796b130f [2022-07-21 08:07:08,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:07:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 408 states, 354 states have (on average 1.6271186440677967) internal successors, (576), 360 states have internal predecessors, (576), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-21 08:07:08,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:08,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:08,865 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] [2022-07-21 08:07:08,867 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:08,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:08,870 INFO L85 PathProgramCache]: Analyzing trace with hash 398033314, now seen corresponding path program 1 times [2022-07-21 08:07:08,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:08,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594073685] [2022-07-21 08:07:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:08,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:09,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:09,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:09,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594073685] [2022-07-21 08:07:09,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594073685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:09,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:09,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:09,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574170031] [2022-07-21 08:07:09,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:09,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:09,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:09,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:09,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:09,207 INFO L87 Difference]: Start difference. First operand has 408 states, 354 states have (on average 1.6271186440677967) internal successors, (576), 360 states have internal predecessors, (576), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 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) [2022-07-21 08:07:10,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:10,145 INFO L93 Difference]: Finished difference Result 926 states and 1464 transitions. [2022-07-21 08:07:10,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:10,148 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 [2022-07-21 08:07:10,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:10,159 INFO L225 Difference]: With dead ends: 926 [2022-07-21 08:07:10,159 INFO L226 Difference]: Without dead ends: 533 [2022-07-21 08:07:10,163 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 [2022-07-21 08:07:10,165 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 733 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:10,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 2037 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:10,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-07-21 08:07:10,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 494. [2022-07-21 08:07:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 422 states have (on average 1.509478672985782) internal successors, (637), 428 states have internal predecessors, (637), 48 states have call successors, (48), 21 states have call predecessors, (48), 22 states have return successors, (51), 47 states have call predecessors, (51), 46 states have call successors, (51) [2022-07-21 08:07:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 736 transitions. [2022-07-21 08:07:10,225 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 736 transitions. Word has length 65 [2022-07-21 08:07:10,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:10,225 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 736 transitions. [2022-07-21 08:07:10,226 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) [2022-07-21 08:07:10,226 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 736 transitions. [2022-07-21 08:07:10,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:10,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:10,228 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] [2022-07-21 08:07:10,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:07:10,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:10,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:10,229 INFO L85 PathProgramCache]: Analyzing trace with hash 2076921954, now seen corresponding path program 1 times [2022-07-21 08:07:10,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:10,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743078274] [2022-07-21 08:07:10,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:10,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:10,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:10,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:10,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743078274] [2022-07-21 08:07:10,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743078274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:10,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:10,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:10,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677146575] [2022-07-21 08:07:10,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:10,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:10,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:10,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:10,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:10,367 INFO L87 Difference]: Start difference. First operand 494 states and 736 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) [2022-07-21 08:07:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:11,279 INFO L93 Difference]: Finished difference Result 841 states and 1213 transitions. [2022-07-21 08:07:11,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:07:11,280 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 [2022-07-21 08:07:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:11,283 INFO L225 Difference]: With dead ends: 841 [2022-07-21 08:07:11,284 INFO L226 Difference]: Without dead ends: 664 [2022-07-21 08:07:11,284 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 [2022-07-21 08:07:11,285 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 1160 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:11,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 2294 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:11,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-07-21 08:07:11,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 590. [2022-07-21 08:07:11,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 498 states have (on average 1.4879518072289157) internal successors, (741), 506 states have internal predecessors, (741), 59 states have call successors, (59), 28 states have call predecessors, (59), 31 states have return successors, (70), 59 states have call predecessors, (70), 57 states have call successors, (70) [2022-07-21 08:07:11,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 870 transitions. [2022-07-21 08:07:11,319 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 870 transitions. Word has length 65 [2022-07-21 08:07:11,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:11,319 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 870 transitions. [2022-07-21 08:07:11,319 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) [2022-07-21 08:07:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 870 transitions. [2022-07-21 08:07:11,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:11,326 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:11,326 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] [2022-07-21 08:07:11,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:07:11,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:11,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:11,327 INFO L85 PathProgramCache]: Analyzing trace with hash 48335844, now seen corresponding path program 1 times [2022-07-21 08:07:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:11,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732013789] [2022-07-21 08:07:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:11,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:11,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:11,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732013789] [2022-07-21 08:07:11,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732013789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:11,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:11,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:07:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13077641] [2022-07-21 08:07:11,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:11,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:07:11,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:11,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:07:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:11,426 INFO L87 Difference]: Start difference. First operand 590 states and 870 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) [2022-07-21 08:07:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:12,219 INFO L93 Difference]: Finished difference Result 891 states and 1284 transitions. [2022-07-21 08:07:12,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:07:12,219 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 [2022-07-21 08:07:12,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:12,223 INFO L225 Difference]: With dead ends: 891 [2022-07-21 08:07:12,223 INFO L226 Difference]: Without dead ends: 624 [2022-07-21 08:07:12,224 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 [2022-07-21 08:07:12,225 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 530 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:12,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 2620 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:07:12,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-07-21 08:07:12,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 595. [2022-07-21 08:07:12,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 502 states have (on average 1.4800796812749004) internal successors, (743), 510 states have internal predecessors, (743), 59 states have call successors, (59), 28 states have call predecessors, (59), 32 states have return successors, (71), 60 states have call predecessors, (71), 57 states have call successors, (71) [2022-07-21 08:07:12,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 873 transitions. [2022-07-21 08:07:12,250 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 873 transitions. Word has length 65 [2022-07-21 08:07:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:12,250 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 873 transitions. [2022-07-21 08:07:12,251 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) [2022-07-21 08:07:12,251 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 873 transitions. [2022-07-21 08:07:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:12,252 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:12,252 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] [2022-07-21 08:07:12,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:07:12,253 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:12,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash -981023454, now seen corresponding path program 1 times [2022-07-21 08:07:12,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:12,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598108878] [2022-07-21 08:07:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:12,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:12,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:12,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:12,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:12,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:12,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:12,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:12,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:12,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:12,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598108878] [2022-07-21 08:07:12,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598108878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:12,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:12,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:07:12,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944138701] [2022-07-21 08:07:12,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:12,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:07:12,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:12,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:07:12,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:12,333 INFO L87 Difference]: Start difference. First operand 595 states and 873 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) [2022-07-21 08:07:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:13,077 INFO L93 Difference]: Finished difference Result 913 states and 1306 transitions. [2022-07-21 08:07:13,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:07:13,078 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 [2022-07-21 08:07:13,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:13,081 INFO L225 Difference]: With dead ends: 913 [2022-07-21 08:07:13,081 INFO L226 Difference]: Without dead ends: 641 [2022-07-21 08:07:13,081 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 [2022-07-21 08:07:13,082 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 789 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 1362 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:13,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 2348 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1362 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:07:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-07-21 08:07:13,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 610. [2022-07-21 08:07:13,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 514 states have (on average 1.4688715953307394) internal successors, (755), 522 states have internal predecessors, (755), 59 states have call successors, (59), 28 states have call predecessors, (59), 35 states have return successors, (74), 63 states have call predecessors, (74), 57 states have call successors, (74) [2022-07-21 08:07:13,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 888 transitions. [2022-07-21 08:07:13,103 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 888 transitions. Word has length 65 [2022-07-21 08:07:13,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:13,103 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 888 transitions. [2022-07-21 08:07:13,104 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) [2022-07-21 08:07:13,104 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 888 transitions. [2022-07-21 08:07:13,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:13,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:13,105 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] [2022-07-21 08:07:13,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:07:13,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:13,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:13,106 INFO L85 PathProgramCache]: Analyzing trace with hash 405179940, now seen corresponding path program 1 times [2022-07-21 08:07:13,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:13,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660212629] [2022-07-21 08:07:13,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:13,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:13,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:13,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660212629] [2022-07-21 08:07:13,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660212629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:13,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:13,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:13,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144803580] [2022-07-21 08:07:13,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:13,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:13,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:13,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:13,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:13,179 INFO L87 Difference]: Start difference. First operand 610 states and 888 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) [2022-07-21 08:07:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:13,940 INFO L93 Difference]: Finished difference Result 1002 states and 1399 transitions. [2022-07-21 08:07:13,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:07:13,941 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 [2022-07-21 08:07:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:13,944 INFO L225 Difference]: With dead ends: 1002 [2022-07-21 08:07:13,944 INFO L226 Difference]: Without dead ends: 717 [2022-07-21 08:07:13,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:07:13,945 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1193 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 1309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:13,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 2060 Invalid, 1309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:07:13,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-07-21 08:07:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 622. [2022-07-21 08:07:13,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 524 states have (on average 1.4599236641221374) internal successors, (765), 532 states have internal predecessors, (765), 60 states have call successors, (60), 29 states have call predecessors, (60), 36 states have return successors, (73), 64 states have call predecessors, (73), 58 states have call successors, (73) [2022-07-21 08:07:13,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 898 transitions. [2022-07-21 08:07:13,962 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 898 transitions. Word has length 65 [2022-07-21 08:07:13,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:13,962 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 898 transitions. [2022-07-21 08:07:13,963 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) [2022-07-21 08:07:13,963 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 898 transitions. [2022-07-21 08:07:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:07:13,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:13,964 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] [2022-07-21 08:07:13,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:07:13,964 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:13,964 INFO L85 PathProgramCache]: Analyzing trace with hash 271166434, now seen corresponding path program 1 times [2022-07-21 08:07:13,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:13,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162422165] [2022-07-21 08:07:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:13,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:14,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:14,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162422165] [2022-07-21 08:07:14,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162422165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:14,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:14,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:14,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091823073] [2022-07-21 08:07:14,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:14,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:14,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:14,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:14,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:14,053 INFO L87 Difference]: Start difference. First operand 622 states and 898 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) [2022-07-21 08:07:14,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:14,433 INFO L93 Difference]: Finished difference Result 1264 states and 1745 transitions. [2022-07-21 08:07:14,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:07:14,433 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 [2022-07-21 08:07:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:14,437 INFO L225 Difference]: With dead ends: 1264 [2022-07-21 08:07:14,437 INFO L226 Difference]: Without dead ends: 968 [2022-07-21 08:07:14,438 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 [2022-07-21 08:07:14,438 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1457 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:14,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1438 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:07:14,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-07-21 08:07:14,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 912. [2022-07-21 08:07:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 748 states have (on average 1.4064171122994653) internal successors, (1052), 763 states have internal predecessors, (1052), 95 states have call successors, (95), 51 states have call predecessors, (95), 67 states have return successors, (130), 104 states have call predecessors, (130), 93 states have call successors, (130) [2022-07-21 08:07:14,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1277 transitions. [2022-07-21 08:07:14,461 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1277 transitions. Word has length 65 [2022-07-21 08:07:14,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:14,461 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1277 transitions. [2022-07-21 08:07:14,461 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) [2022-07-21 08:07:14,461 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1277 transitions. [2022-07-21 08:07:14,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:07:14,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:14,463 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] [2022-07-21 08:07:14,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:07:14,463 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:14,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:14,463 INFO L85 PathProgramCache]: Analyzing trace with hash 498977079, now seen corresponding path program 1 times [2022-07-21 08:07:14,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:14,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421032767] [2022-07-21 08:07:14,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:14,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:14,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421032767] [2022-07-21 08:07:14,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421032767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:14,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:14,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:14,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928008685] [2022-07-21 08:07:14,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:14,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:14,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:14,506 INFO L87 Difference]: Start difference. First operand 912 states and 1277 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) [2022-07-21 08:07:15,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:15,021 INFO L93 Difference]: Finished difference Result 2115 states and 2848 transitions. [2022-07-21 08:07:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:07:15,022 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 [2022-07-21 08:07:15,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:15,027 INFO L225 Difference]: With dead ends: 2115 [2022-07-21 08:07:15,027 INFO L226 Difference]: Without dead ends: 1508 [2022-07-21 08:07:15,029 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 [2022-07-21 08:07:15,029 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 710 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:15,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 1669 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:07:15,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2022-07-21 08:07:15,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1393. [2022-07-21 08:07:15,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1127 states have (on average 1.360248447204969) internal successors, (1533), 1145 states have internal predecessors, (1533), 140 states have call successors, (140), 95 states have call predecessors, (140), 124 states have return successors, (202), 159 states have call predecessors, (202), 138 states have call successors, (202) [2022-07-21 08:07:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1875 transitions. [2022-07-21 08:07:15,083 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1875 transitions. Word has length 66 [2022-07-21 08:07:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:15,084 INFO L495 AbstractCegarLoop]: Abstraction has 1393 states and 1875 transitions. [2022-07-21 08:07:15,084 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) [2022-07-21 08:07:15,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1875 transitions. [2022-07-21 08:07:15,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:07:15,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:15,085 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] [2022-07-21 08:07:15,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:07:15,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:15,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1957216738, now seen corresponding path program 1 times [2022-07-21 08:07:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:15,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386176389] [2022-07-21 08:07:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:15,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:15,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:15,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386176389] [2022-07-21 08:07:15,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386176389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:15,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:15,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:15,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025524930] [2022-07-21 08:07:15,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:15,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:15,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:15,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:15,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:15,126 INFO L87 Difference]: Start difference. First operand 1393 states and 1875 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) [2022-07-21 08:07:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:15,479 INFO L93 Difference]: Finished difference Result 3581 states and 4681 transitions. [2022-07-21 08:07:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:07:15,479 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 [2022-07-21 08:07:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:15,487 INFO L225 Difference]: With dead ends: 3581 [2022-07-21 08:07:15,487 INFO L226 Difference]: Without dead ends: 2513 [2022-07-21 08:07:15,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:07:15,490 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 1161 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:15,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 1440 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:07:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-07-21 08:07:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 2255. [2022-07-21 08:07:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1793 states have (on average 1.3162297824874511) internal successors, (2360), 1821 states have internal predecessors, (2360), 238 states have call successors, (238), 179 states have call predecessors, (238), 222 states have return successors, (338), 261 states have call predecessors, (338), 236 states have call successors, (338) [2022-07-21 08:07:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 2936 transitions. [2022-07-21 08:07:15,565 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 2936 transitions. Word has length 66 [2022-07-21 08:07:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:15,565 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 2936 transitions. [2022-07-21 08:07:15,566 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) [2022-07-21 08:07:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 2936 transitions. [2022-07-21 08:07:15,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 08:07:15,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:15,568 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] [2022-07-21 08:07:15,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:07:15,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash 388589846, now seen corresponding path program 1 times [2022-07-21 08:07:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:15,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811586271] [2022-07-21 08:07:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:15,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:15,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811586271] [2022-07-21 08:07:15,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811586271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:15,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:15,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:15,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202688360] [2022-07-21 08:07:15,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:15,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:15,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:15,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:15,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:15,630 INFO L87 Difference]: Start difference. First operand 2255 states and 2936 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) [2022-07-21 08:07:15,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:15,969 INFO L93 Difference]: Finished difference Result 5165 states and 6586 transitions. [2022-07-21 08:07:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:07:15,969 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 [2022-07-21 08:07:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:15,981 INFO L225 Difference]: With dead ends: 5165 [2022-07-21 08:07:15,981 INFO L226 Difference]: Without dead ends: 3235 [2022-07-21 08:07:15,985 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 [2022-07-21 08:07:15,987 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 1146 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:15,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 1486 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:07:15,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2022-07-21 08:07:16,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 2987. [2022-07-21 08:07:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2987 states, 2361 states have (on average 1.2977551884794578) internal successors, (3064), 2397 states have internal predecessors, (3064), 318 states have call successors, (318), 249 states have call predecessors, (318), 306 states have return successors, (447), 347 states have call predecessors, (447), 316 states have call successors, (447) [2022-07-21 08:07:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2987 states to 2987 states and 3829 transitions. [2022-07-21 08:07:16,082 INFO L78 Accepts]: Start accepts. Automaton has 2987 states and 3829 transitions. Word has length 72 [2022-07-21 08:07:16,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:16,083 INFO L495 AbstractCegarLoop]: Abstraction has 2987 states and 3829 transitions. [2022-07-21 08:07:16,083 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) [2022-07-21 08:07:16,083 INFO L276 IsEmpty]: Start isEmpty. Operand 2987 states and 3829 transitions. [2022-07-21 08:07:16,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 08:07:16,084 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:16,084 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] [2022-07-21 08:07:16,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:07:16,084 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:16,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:16,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1355326336, now seen corresponding path program 1 times [2022-07-21 08:07:16,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:16,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151718844] [2022-07-21 08:07:16,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:16,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:16,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:16,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151718844] [2022-07-21 08:07:16,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151718844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:16,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:16,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:16,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186815261] [2022-07-21 08:07:16,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:16,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:16,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:16,163 INFO L87 Difference]: Start difference. First operand 2987 states and 3829 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) [2022-07-21 08:07:16,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:16,541 INFO L93 Difference]: Finished difference Result 3761 states and 4760 transitions. [2022-07-21 08:07:16,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:07:16,542 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 [2022-07-21 08:07:16,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:16,554 INFO L225 Difference]: With dead ends: 3761 [2022-07-21 08:07:16,554 INFO L226 Difference]: Without dead ends: 3758 [2022-07-21 08:07:16,556 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 [2022-07-21 08:07:16,556 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 2030 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:16,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 1186 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:07:16,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2022-07-21 08:07:16,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3481. [2022-07-21 08:07:16,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3481 states, 2746 states have (on average 1.2876911871813548) internal successors, (3536), 2787 states have internal predecessors, (3536), 368 states have call successors, (368), 293 states have call predecessors, (368), 365 states have return successors, (526), 407 states have call predecessors, (526), 367 states have call successors, (526) [2022-07-21 08:07:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 4430 transitions. [2022-07-21 08:07:16,661 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 4430 transitions. Word has length 73 [2022-07-21 08:07:16,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:16,662 INFO L495 AbstractCegarLoop]: Abstraction has 3481 states and 4430 transitions. [2022-07-21 08:07:16,662 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) [2022-07-21 08:07:16,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 4430 transitions. [2022-07-21 08:07:16,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 08:07:16,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:16,663 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] [2022-07-21 08:07:16,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:07:16,663 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:16,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:16,663 INFO L85 PathProgramCache]: Analyzing trace with hash 933342880, now seen corresponding path program 1 times [2022-07-21 08:07:16,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:16,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010166558] [2022-07-21 08:07:16,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:16,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:16,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:16,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010166558] [2022-07-21 08:07:16,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010166558] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:07:16,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949362947] [2022-07-21 08:07:16,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:16,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:07:16,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:07:16,729 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) [2022-07-21 08:07:16,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:07:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:16,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 08:07:16,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:07:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:17,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:07:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:17,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949362947] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:07:17,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:07:17,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-21 08:07:17,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555168894] [2022-07-21 08:07:17,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:07:17,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:07:17,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:17,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:07:17,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:07:17,201 INFO L87 Difference]: Start difference. First operand 3481 states and 4430 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) [2022-07-21 08:07:18,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:18,551 INFO L93 Difference]: Finished difference Result 7922 states and 9916 transitions. [2022-07-21 08:07:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:07:18,551 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 [2022-07-21 08:07:18,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:18,573 INFO L225 Difference]: With dead ends: 7922 [2022-07-21 08:07:18,573 INFO L226 Difference]: Without dead ends: 7919 [2022-07-21 08:07:18,576 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 [2022-07-21 08:07:18,576 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 2028 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:18,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2097 Valid, 2456 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:07:18,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7919 states. [2022-07-21 08:07:18,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7919 to 5271. [2022-07-21 08:07:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5271 states, 4150 states have (on average 1.28) internal successors, (5312), 4213 states have internal predecessors, (5312), 552 states have call successors, (552), 451 states have call predecessors, (552), 567 states have return successors, (804), 613 states have call predecessors, (804), 551 states have call successors, (804) [2022-07-21 08:07:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5271 states to 5271 states and 6668 transitions. [2022-07-21 08:07:18,780 INFO L78 Accepts]: Start accepts. Automaton has 5271 states and 6668 transitions. Word has length 74 [2022-07-21 08:07:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:18,781 INFO L495 AbstractCegarLoop]: Abstraction has 5271 states and 6668 transitions. [2022-07-21 08:07:18,781 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) [2022-07-21 08:07:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5271 states and 6668 transitions. [2022-07-21 08:07:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 08:07:18,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:18,783 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] [2022-07-21 08:07:18,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:07:18,999 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,SelfDestructingSolverStorable10 [2022-07-21 08:07:19,000 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1804001536, now seen corresponding path program 2 times [2022-07-21 08:07:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:19,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660662511] [2022-07-21 08:07:19,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:19,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,040 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:19,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:19,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660662511] [2022-07-21 08:07:19,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660662511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:19,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:19,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:19,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727164173] [2022-07-21 08:07:19,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:19,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:19,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:19,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:19,042 INFO L87 Difference]: Start difference. First operand 5271 states and 6668 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) [2022-07-21 08:07:19,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:19,483 INFO L93 Difference]: Finished difference Result 7953 states and 10041 transitions. [2022-07-21 08:07:19,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:07:19,484 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 [2022-07-21 08:07:19,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:19,496 INFO L225 Difference]: With dead ends: 7953 [2022-07-21 08:07:19,497 INFO L226 Difference]: Without dead ends: 3878 [2022-07-21 08:07:19,504 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 [2022-07-21 08:07:19,504 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1066 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:19,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1590 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:07:19,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-07-21 08:07:19,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3643. [2022-07-21 08:07:19,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 2878 states have (on average 1.2689367616400278) internal successors, (3652), 2919 states have internal predecessors, (3652), 384 states have call successors, (384), 307 states have call predecessors, (384), 379 states have return successors, (530), 423 states have call predecessors, (530), 383 states have call successors, (530) [2022-07-21 08:07:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 4566 transitions. [2022-07-21 08:07:19,640 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 4566 transitions. Word has length 77 [2022-07-21 08:07:19,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:19,640 INFO L495 AbstractCegarLoop]: Abstraction has 3643 states and 4566 transitions. [2022-07-21 08:07:19,640 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) [2022-07-21 08:07:19,641 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 4566 transitions. [2022-07-21 08:07:19,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 08:07:19,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:19,643 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] [2022-07-21 08:07:19,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:07:19,643 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:19,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1529654834, now seen corresponding path program 1 times [2022-07-21 08:07:19,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:19,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610693846] [2022-07-21 08:07:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:19,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:07:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:07:19,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:19,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610693846] [2022-07-21 08:07:19,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610693846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:19,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:19,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:07:19,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536633058] [2022-07-21 08:07:19,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:19,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:07:19,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:19,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:07:19,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:07:19,702 INFO L87 Difference]: Start difference. First operand 3643 states and 4566 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) [2022-07-21 08:07:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:20,703 INFO L93 Difference]: Finished difference Result 10515 states and 12983 transitions. [2022-07-21 08:07:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:07:20,704 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 [2022-07-21 08:07:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:20,718 INFO L225 Difference]: With dead ends: 10515 [2022-07-21 08:07:20,719 INFO L226 Difference]: Without dead ends: 5878 [2022-07-21 08:07:20,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:07:20,725 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1556 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:20,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1572 Valid, 1849 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:07:20,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2022-07-21 08:07:20,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 5558. [2022-07-21 08:07:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 4336 states have (on average 1.2396217712177122) internal successors, (5375), 4420 states have internal predecessors, (5375), 588 states have call successors, (588), 481 states have call predecessors, (588), 632 states have return successors, (912), 663 states have call predecessors, (912), 587 states have call successors, (912) [2022-07-21 08:07:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 6875 transitions. [2022-07-21 08:07:20,941 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 6875 transitions. Word has length 84 [2022-07-21 08:07:20,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:20,941 INFO L495 AbstractCegarLoop]: Abstraction has 5558 states and 6875 transitions. [2022-07-21 08:07:20,942 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) [2022-07-21 08:07:20,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 6875 transitions. [2022-07-21 08:07:20,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 08:07:20,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:20,944 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] [2022-07-21 08:07:20,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:07:20,944 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:20,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:20,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1318594338, now seen corresponding path program 1 times [2022-07-21 08:07:20,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:20,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742926066] [2022-07-21 08:07:20,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:20,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:20,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:20,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:20,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:20,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:20,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:20,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 08:07:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:07:21,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:21,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742926066] [2022-07-21 08:07:21,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742926066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:21,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:21,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:07:21,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075067188] [2022-07-21 08:07:21,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:21,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:07:21,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:21,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:07:21,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:21,003 INFO L87 Difference]: Start difference. First operand 5558 states and 6875 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) [2022-07-21 08:07:22,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:22,142 INFO L93 Difference]: Finished difference Result 9561 states and 11715 transitions. [2022-07-21 08:07:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:07:22,142 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 [2022-07-21 08:07:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:22,172 INFO L225 Difference]: With dead ends: 9561 [2022-07-21 08:07:22,172 INFO L226 Difference]: Without dead ends: 4968 [2022-07-21 08:07:22,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:07:22,181 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 2121 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:22,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2164 Valid, 2164 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [404 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:22,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4968 states. [2022-07-21 08:07:22,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4968 to 4634. [2022-07-21 08:07:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4634 states, 3625 states have (on average 1.234206896551724) internal successors, (4474), 3691 states have internal predecessors, (4474), 489 states have call successors, (489), 396 states have call predecessors, (489), 518 states have return successors, (690), 553 states have call predecessors, (690), 488 states have call successors, (690) [2022-07-21 08:07:22,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4634 states to 4634 states and 5653 transitions. [2022-07-21 08:07:22,380 INFO L78 Accepts]: Start accepts. Automaton has 4634 states and 5653 transitions. Word has length 93 [2022-07-21 08:07:22,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:22,381 INFO L495 AbstractCegarLoop]: Abstraction has 4634 states and 5653 transitions. [2022-07-21 08:07:22,381 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) [2022-07-21 08:07:22,382 INFO L276 IsEmpty]: Start isEmpty. Operand 4634 states and 5653 transitions. [2022-07-21 08:07:22,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:22,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:22,387 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] [2022-07-21 08:07:22,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:07:22,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:22,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:22,388 INFO L85 PathProgramCache]: Analyzing trace with hash -162152600, now seen corresponding path program 1 times [2022-07-21 08:07:22,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:22,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791896588] [2022-07-21 08:07:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:22,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:22,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:22,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:07:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 08:07:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:07:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 08:07:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 08:07:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 08:07:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 08:07:22,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:22,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791896588] [2022-07-21 08:07:22,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791896588] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:07:22,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734687085] [2022-07-21 08:07:22,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:22,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:07:22,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:07:22,504 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) [2022-07-21 08:07:22,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:07:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:22,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 08:07:22,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:07:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 08:07:22,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:07:22,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734687085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:22,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:07:22,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-21 08:07:22,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030546362] [2022-07-21 08:07:22,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:22,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:22,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:22,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:07:22,659 INFO L87 Difference]: Start difference. First operand 4634 states and 5653 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) [2022-07-21 08:07:22,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:22,793 INFO L93 Difference]: Finished difference Result 6800 states and 8276 transitions. [2022-07-21 08:07:22,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:22,793 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 [2022-07-21 08:07:22,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:22,800 INFO L225 Difference]: With dead ends: 6800 [2022-07-21 08:07:22,800 INFO L226 Difference]: Without dead ends: 2495 [2022-07-21 08:07:22,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:07:22,807 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 34 mSDsluCounter, 2364 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2965 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 [2022-07-21 08:07:22,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2965 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:07:22,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2022-07-21 08:07:22,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2370. [2022-07-21 08:07:22,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2370 states, 1938 states have (on average 1.2487100103199174) internal successors, (2420), 1953 states have internal predecessors, (2420), 213 states have call successors, (213), 162 states have call predecessors, (213), 217 states have return successors, (297), 255 states have call predecessors, (297), 212 states have call successors, (297) [2022-07-21 08:07:22,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 2930 transitions. [2022-07-21 08:07:22,899 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 2930 transitions. Word has length 145 [2022-07-21 08:07:22,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:22,899 INFO L495 AbstractCegarLoop]: Abstraction has 2370 states and 2930 transitions. [2022-07-21 08:07:22,899 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) [2022-07-21 08:07:22,899 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 2930 transitions. [2022-07-21 08:07:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-21 08:07:22,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:22,903 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] [2022-07-21 08:07:22,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:07:23,120 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,SelfDestructingSolverStorable14 [2022-07-21 08:07:23,120 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:23,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:23,120 INFO L85 PathProgramCache]: Analyzing trace with hash -35746380, now seen corresponding path program 1 times [2022-07-21 08:07:23,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:23,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359005522] [2022-07-21 08:07:23,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:23,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:07:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:07:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:07:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:07:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:07:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 08:07:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 08:07:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 08:07:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:07:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:07:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 08:07:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 08:07:23,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 08:07:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-21 08:07:23,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:23,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359005522] [2022-07-21 08:07:23,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359005522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:23,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:23,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:23,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909866878] [2022-07-21 08:07:23,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:23,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:23,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:23,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:23,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:23,190 INFO L87 Difference]: Start difference. First operand 2370 states and 2930 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) [2022-07-21 08:07:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:23,571 INFO L93 Difference]: Finished difference Result 2435 states and 2998 transitions. [2022-07-21 08:07:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:23,571 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 [2022-07-21 08:07:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:23,576 INFO L225 Difference]: With dead ends: 2435 [2022-07-21 08:07:23,576 INFO L226 Difference]: Without dead ends: 1992 [2022-07-21 08:07:23,578 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 [2022-07-21 08:07:23,578 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 631 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:23,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1611 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:07:23,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-07-21 08:07:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1930. [2022-07-21 08:07:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1594 states have (on average 1.2647427854454203) internal successors, (2016), 1606 states have internal predecessors, (2016), 167 states have call successors, (167), 122 states have call predecessors, (167), 167 states have return successors, (233), 202 states have call predecessors, (233), 166 states have call successors, (233) [2022-07-21 08:07:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2416 transitions. [2022-07-21 08:07:23,646 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2416 transitions. Word has length 147 [2022-07-21 08:07:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:23,646 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 2416 transitions. [2022-07-21 08:07:23,646 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) [2022-07-21 08:07:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2416 transitions. [2022-07-21 08:07:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:23,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:23,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:23,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:07:23,649 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:23,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:23,650 INFO L85 PathProgramCache]: Analyzing trace with hash -854471620, now seen corresponding path program 1 times [2022-07-21 08:07:23,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:23,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895556129] [2022-07-21 08:07:23,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:23,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:23,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:23,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:23,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:23,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:23,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895556129] [2022-07-21 08:07:23,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895556129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:23,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:23,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:07:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995153069] [2022-07-21 08:07:23,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:23,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:07:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:07:23,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:07:23,759 INFO L87 Difference]: Start difference. First operand 1930 states and 2416 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:24,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:24,636 INFO L93 Difference]: Finished difference Result 2333 states and 3064 transitions. [2022-07-21 08:07:24,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:24,637 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-07-21 08:07:24,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:24,642 INFO L225 Difference]: With dead ends: 2333 [2022-07-21 08:07:24,643 INFO L226 Difference]: Without dead ends: 2039 [2022-07-21 08:07:24,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:07:24,647 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 907 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:24,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 1120 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:07:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2022-07-21 08:07:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1930. [2022-07-21 08:07:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1930 states, 1594 states have (on average 1.2641154328732749) internal successors, (2015), 1606 states have internal predecessors, (2015), 167 states have call successors, (167), 122 states have call predecessors, (167), 167 states have return successors, (233), 202 states have call predecessors, (233), 166 states have call successors, (233) [2022-07-21 08:07:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2415 transitions. [2022-07-21 08:07:24,739 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2415 transitions. Word has length 145 [2022-07-21 08:07:24,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:24,740 INFO L495 AbstractCegarLoop]: Abstraction has 1930 states and 2415 transitions. [2022-07-21 08:07:24,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:07:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2415 transitions. [2022-07-21 08:07:24,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:24,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:24,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:24,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:07:24,743 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:24,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2041542074, now seen corresponding path program 1 times [2022-07-21 08:07:24,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:24,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647992107] [2022-07-21 08:07:24,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:24,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:24,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:24,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:24,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:24,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:24,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:24,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:24,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647992107] [2022-07-21 08:07:24,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647992107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:24,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:24,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:07:24,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237509399] [2022-07-21 08:07:24,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:24,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:07:24,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:24,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:07:24,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:07:24,860 INFO L87 Difference]: Start difference. First operand 1930 states and 2415 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-07-21 08:07:26,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:26,372 INFO L93 Difference]: Finished difference Result 2730 states and 3702 transitions. [2022-07-21 08:07:26,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:07:26,373 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-07-21 08:07:26,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:26,378 INFO L225 Difference]: With dead ends: 2730 [2022-07-21 08:07:26,378 INFO L226 Difference]: Without dead ends: 2445 [2022-07-21 08:07:26,379 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 [2022-07-21 08:07:26,380 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1423 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:26,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 1585 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:07:26,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2022-07-21 08:07:26,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 2228. [2022-07-21 08:07:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2228 states, 1867 states have (on average 1.3111944295661488) internal successors, (2448), 1880 states have internal predecessors, (2448), 185 states have call successors, (185), 128 states have call predecessors, (185), 174 states have return successors, (254), 220 states have call predecessors, (254), 184 states have call successors, (254) [2022-07-21 08:07:26,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2228 states to 2228 states and 2887 transitions. [2022-07-21 08:07:26,503 INFO L78 Accepts]: Start accepts. Automaton has 2228 states and 2887 transitions. Word has length 145 [2022-07-21 08:07:26,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:26,503 INFO L495 AbstractCegarLoop]: Abstraction has 2228 states and 2887 transitions. [2022-07-21 08:07:26,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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) [2022-07-21 08:07:26,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2228 states and 2887 transitions. [2022-07-21 08:07:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:26,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:26,508 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:26,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:07:26,509 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:26,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1334945468, now seen corresponding path program 1 times [2022-07-21 08:07:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:26,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420815772] [2022-07-21 08:07:26,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:26,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:26,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:26,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:26,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:26,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420815772] [2022-07-21 08:07:26,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420815772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:26,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:26,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:26,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814336272] [2022-07-21 08:07:26,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:26,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:26,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:26,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:26,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:26,620 INFO L87 Difference]: Start difference. First operand 2228 states and 2887 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:28,545 INFO L93 Difference]: Finished difference Result 3448 states and 4849 transitions. [2022-07-21 08:07:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:28,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:07:28,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:28,551 INFO L225 Difference]: With dead ends: 3448 [2022-07-21 08:07:28,551 INFO L226 Difference]: Without dead ends: 2865 [2022-07-21 08:07:28,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:28,554 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 1440 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:28,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 2605 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2635 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:07:28,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-07-21 08:07:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2505. [2022-07-21 08:07:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2119 states have (on average 1.339782916470033) internal successors, (2839), 2133 states have internal predecessors, (2839), 203 states have call successors, (203), 134 states have call predecessors, (203), 181 states have return successors, (274), 239 states have call predecessors, (274), 202 states have call successors, (274) [2022-07-21 08:07:28,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 3316 transitions. [2022-07-21 08:07:28,671 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 3316 transitions. Word has length 145 [2022-07-21 08:07:28,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:28,672 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 3316 transitions. [2022-07-21 08:07:28,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:28,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 3316 transitions. [2022-07-21 08:07:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:28,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:28,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:28,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:07:28,675 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:28,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2012983942, now seen corresponding path program 1 times [2022-07-21 08:07:28,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:28,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216723060] [2022-07-21 08:07:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:28,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:28,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:28,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:28,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216723060] [2022-07-21 08:07:28,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216723060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:28,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:28,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:28,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784588312] [2022-07-21 08:07:28,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:28,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:28,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:28,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:28,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:28,766 INFO L87 Difference]: Start difference. First operand 2505 states and 3316 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:31,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:31,058 INFO L93 Difference]: Finished difference Result 4506 states and 6526 transitions. [2022-07-21 08:07:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:31,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:07:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:31,070 INFO L225 Difference]: With dead ends: 4506 [2022-07-21 08:07:31,070 INFO L226 Difference]: Without dead ends: 3646 [2022-07-21 08:07:31,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:31,075 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 1437 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:31,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 2597 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 08:07:31,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2022-07-21 08:07:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3060. [2022-07-21 08:07:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 2624 states have (on average 1.3803353658536586) internal successors, (3622), 2640 states have internal predecessors, (3622), 239 states have call successors, (239), 146 states have call predecessors, (239), 195 states have return successors, (318), 277 states have call predecessors, (318), 238 states have call successors, (318) [2022-07-21 08:07:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4179 transitions. [2022-07-21 08:07:31,265 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4179 transitions. Word has length 145 [2022-07-21 08:07:31,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:31,265 INFO L495 AbstractCegarLoop]: Abstraction has 3060 states and 4179 transitions. [2022-07-21 08:07:31,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:31,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4179 transitions. [2022-07-21 08:07:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:31,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:31,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:31,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:07:31,269 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:31,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:31,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1151150340, now seen corresponding path program 1 times [2022-07-21 08:07:31,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:31,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276715397] [2022-07-21 08:07:31,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:31,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:31,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:31,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:31,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276715397] [2022-07-21 08:07:31,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276715397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:31,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:31,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:31,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971921886] [2022-07-21 08:07:31,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:31,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:31,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:31,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:31,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:31,365 INFO L87 Difference]: Start difference. First operand 3060 states and 4179 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:33,386 INFO L93 Difference]: Finished difference Result 6541 states and 9733 transitions. [2022-07-21 08:07:33,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:33,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:07:33,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:33,398 INFO L225 Difference]: With dead ends: 6541 [2022-07-21 08:07:33,398 INFO L226 Difference]: Without dead ends: 5126 [2022-07-21 08:07:33,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:33,404 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1433 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 2738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:33,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 2593 Invalid, 2738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:07:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5126 states. [2022-07-21 08:07:33,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5126 to 4171. [2022-07-21 08:07:33,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4171 states, 3635 states have (on average 1.427235213204952) internal successors, (5188), 3655 states have internal predecessors, (5188), 311 states have call successors, (311), 170 states have call predecessors, (311), 223 states have return successors, (412), 353 states have call predecessors, (412), 310 states have call successors, (412) [2022-07-21 08:07:33,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4171 states to 4171 states and 5911 transitions. [2022-07-21 08:07:33,610 INFO L78 Accepts]: Start accepts. Automaton has 4171 states and 5911 transitions. Word has length 145 [2022-07-21 08:07:33,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:33,610 INFO L495 AbstractCegarLoop]: Abstraction has 4171 states and 5911 transitions. [2022-07-21 08:07:33,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:33,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4171 states and 5911 transitions. [2022-07-21 08:07:33,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:33,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:33,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:33,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:07:33,616 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:33,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1093408058, now seen corresponding path program 1 times [2022-07-21 08:07:33,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:33,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811102678] [2022-07-21 08:07:33,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:33,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:33,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:33,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:33,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:33,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:33,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811102678] [2022-07-21 08:07:33,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811102678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:33,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:33,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:33,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930073068] [2022-07-21 08:07:33,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:33,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:33,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:33,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:33,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:33,696 INFO L87 Difference]: Start difference. First operand 4171 states and 5911 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:36,053 INFO L93 Difference]: Finished difference Result 10610 states and 16163 transitions. [2022-07-21 08:07:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:36,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:07:36,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:36,072 INFO L225 Difference]: With dead ends: 10610 [2022-07-21 08:07:36,072 INFO L226 Difference]: Without dead ends: 8084 [2022-07-21 08:07:36,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:36,080 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 1429 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2627 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 2589 SdHoareTripleChecker+Invalid, 2733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:36,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 2589 Invalid, 2733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 08:07:36,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8084 states. [2022-07-21 08:07:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8084 to 6398. [2022-07-21 08:07:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6398 states, 5662 states have (on average 1.4705051218650653) internal successors, (8326), 5690 states have internal predecessors, (8326), 455 states have call successors, (455), 218 states have call predecessors, (455), 279 states have return successors, (618), 505 states have call predecessors, (618), 454 states have call successors, (618) [2022-07-21 08:07:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6398 states to 6398 states and 9399 transitions. [2022-07-21 08:07:36,407 INFO L78 Accepts]: Start accepts. Automaton has 6398 states and 9399 transitions. Word has length 145 [2022-07-21 08:07:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:36,408 INFO L495 AbstractCegarLoop]: Abstraction has 6398 states and 9399 transitions. [2022-07-21 08:07:36,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 6398 states and 9399 transitions. [2022-07-21 08:07:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:36,413 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:36,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:36,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:07:36,413 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:36,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:36,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1581455164, now seen corresponding path program 1 times [2022-07-21 08:07:36,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:36,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206221680] [2022-07-21 08:07:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:36,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:36,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:36,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:36,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206221680] [2022-07-21 08:07:36,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206221680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:36,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:36,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:36,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991595387] [2022-07-21 08:07:36,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:36,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:36,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:36,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:36,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:36,505 INFO L87 Difference]: Start difference. First operand 6398 states and 9399 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:38,017 INFO L93 Difference]: Finished difference Result 12915 states and 19874 transitions. [2022-07-21 08:07:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:38,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:07:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:38,035 INFO L225 Difference]: With dead ends: 12915 [2022-07-21 08:07:38,035 INFO L226 Difference]: Without dead ends: 8162 [2022-07-21 08:07:38,059 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 [2022-07-21 08:07:38,059 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1090 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:38,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1558 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:07:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8162 states. [2022-07-21 08:07:38,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8162 to 6398. [2022-07-21 08:07:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6398 states, 5662 states have (on average 1.467502649240551) internal successors, (8309), 5690 states have internal predecessors, (8309), 455 states have call successors, (455), 218 states have call predecessors, (455), 279 states have return successors, (618), 505 states have call predecessors, (618), 454 states have call successors, (618) [2022-07-21 08:07:38,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6398 states to 6398 states and 9382 transitions. [2022-07-21 08:07:38,432 INFO L78 Accepts]: Start accepts. Automaton has 6398 states and 9382 transitions. Word has length 145 [2022-07-21 08:07:38,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:38,432 INFO L495 AbstractCegarLoop]: Abstraction has 6398 states and 9382 transitions. [2022-07-21 08:07:38,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:38,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6398 states and 9382 transitions. [2022-07-21 08:07:38,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:38,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:38,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:38,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:07:38,438 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:38,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:38,438 INFO L85 PathProgramCache]: Analyzing trace with hash 488819962, now seen corresponding path program 1 times [2022-07-21 08:07:38,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:38,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162029149] [2022-07-21 08:07:38,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:38,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:38,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:38,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:38,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162029149] [2022-07-21 08:07:38,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162029149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:38,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:38,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:38,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106591266] [2022-07-21 08:07:38,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:38,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:38,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:38,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:38,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:38,524 INFO L87 Difference]: Start difference. First operand 6398 states and 9382 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:39,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:39,899 INFO L93 Difference]: Finished difference Result 12897 states and 19788 transitions. [2022-07-21 08:07:39,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:39,899 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:07:39,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:39,915 INFO L225 Difference]: With dead ends: 12897 [2022-07-21 08:07:39,916 INFO L226 Difference]: Without dead ends: 8144 [2022-07-21 08:07:39,924 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 [2022-07-21 08:07:39,925 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 1272 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:39,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1345 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:39,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2022-07-21 08:07:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 6398. [2022-07-21 08:07:40,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6398 states, 5662 states have (on average 1.4645001766160368) internal successors, (8292), 5690 states have internal predecessors, (8292), 455 states have call successors, (455), 218 states have call predecessors, (455), 279 states have return successors, (618), 505 states have call predecessors, (618), 454 states have call successors, (618) [2022-07-21 08:07:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6398 states to 6398 states and 9365 transitions. [2022-07-21 08:07:40,286 INFO L78 Accepts]: Start accepts. Automaton has 6398 states and 9365 transitions. Word has length 145 [2022-07-21 08:07:40,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:40,286 INFO L495 AbstractCegarLoop]: Abstraction has 6398 states and 9365 transitions. [2022-07-21 08:07:40,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:40,287 INFO L276 IsEmpty]: Start isEmpty. Operand 6398 states and 9365 transitions. [2022-07-21 08:07:40,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:40,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:40,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:40,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:07:40,291 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:40,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash -793352324, now seen corresponding path program 1 times [2022-07-21 08:07:40,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:40,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291880433] [2022-07-21 08:07:40,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:40,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:40,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:40,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291880433] [2022-07-21 08:07:40,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291880433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:40,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:40,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:40,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653422287] [2022-07-21 08:07:40,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:40,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:40,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:40,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:40,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:40,373 INFO L87 Difference]: Start difference. First operand 6398 states and 9365 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:43,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:43,066 INFO L93 Difference]: Finished difference Result 18692 states and 28809 transitions. [2022-07-21 08:07:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:07:43,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:07:43,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:43,101 INFO L225 Difference]: With dead ends: 18692 [2022-07-21 08:07:43,101 INFO L226 Difference]: Without dead ends: 13939 [2022-07-21 08:07:43,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:07:43,114 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 1496 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 2312 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 2312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:43,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1881 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 2312 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:07:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13939 states. [2022-07-21 08:07:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13939 to 10914. [2022-07-21 08:07:43,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10914 states, 9778 states have (on average 1.4953978318674574) internal successors, (14622), 9822 states have internal predecessors, (14622), 743 states have call successors, (743), 314 states have call predecessors, (743), 391 states have return successors, (1084), 809 states have call predecessors, (1084), 742 states have call successors, (1084) [2022-07-21 08:07:43,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10914 states to 10914 states and 16449 transitions. [2022-07-21 08:07:43,791 INFO L78 Accepts]: Start accepts. Automaton has 10914 states and 16449 transitions. Word has length 145 [2022-07-21 08:07:43,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:43,792 INFO L495 AbstractCegarLoop]: Abstraction has 10914 states and 16449 transitions. [2022-07-21 08:07:43,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:43,792 INFO L276 IsEmpty]: Start isEmpty. Operand 10914 states and 16449 transitions. [2022-07-21 08:07:43,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:43,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:43,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:43,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:07:43,798 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:43,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1779612286, now seen corresponding path program 1 times [2022-07-21 08:07:43,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:43,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70903806] [2022-07-21 08:07:43,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:43,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:43,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:43,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:43,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70903806] [2022-07-21 08:07:43,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70903806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:43,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:43,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:43,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868062754] [2022-07-21 08:07:43,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:43,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:43,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:43,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:43,882 INFO L87 Difference]: Start difference. First operand 10914 states and 16449 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:45,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:45,637 INFO L93 Difference]: Finished difference Result 23347 states and 36376 transitions. [2022-07-21 08:07:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:07:45,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:07:45,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:45,670 INFO L225 Difference]: With dead ends: 23347 [2022-07-21 08:07:45,670 INFO L226 Difference]: Without dead ends: 14078 [2022-07-21 08:07:45,685 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 [2022-07-21 08:07:45,686 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 1269 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:45,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 1336 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:07:45,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14078 states. [2022-07-21 08:07:46,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14078 to 10914. [2022-07-21 08:07:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10914 states, 9778 states have (on average 1.4920229085702599) internal successors, (14589), 9822 states have internal predecessors, (14589), 743 states have call successors, (743), 314 states have call predecessors, (743), 391 states have return successors, (1084), 809 states have call predecessors, (1084), 742 states have call successors, (1084) [2022-07-21 08:07:46,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10914 states to 10914 states and 16416 transitions. [2022-07-21 08:07:46,349 INFO L78 Accepts]: Start accepts. Automaton has 10914 states and 16416 transitions. Word has length 145 [2022-07-21 08:07:46,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:46,349 INFO L495 AbstractCegarLoop]: Abstraction has 10914 states and 16416 transitions. [2022-07-21 08:07:46,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:46,349 INFO L276 IsEmpty]: Start isEmpty. Operand 10914 states and 16416 transitions. [2022-07-21 08:07:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:46,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:46,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:46,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:07:46,356 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:46,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:46,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1446969148, now seen corresponding path program 1 times [2022-07-21 08:07:46,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:46,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226029097] [2022-07-21 08:07:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:46,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:46,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:46,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226029097] [2022-07-21 08:07:46,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226029097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:46,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:46,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:46,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610936759] [2022-07-21 08:07:46,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:46,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:46,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:46,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:46,435 INFO L87 Difference]: Start difference. First operand 10914 states and 16416 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:51,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:07:51,290 INFO L93 Difference]: Finished difference Result 39252 states and 61013 transitions. [2022-07-21 08:07:51,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:07:51,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:07:51,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:07:51,365 INFO L225 Difference]: With dead ends: 39252 [2022-07-21 08:07:51,366 INFO L226 Difference]: Without dead ends: 29983 [2022-07-21 08:07:51,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:07:51,387 INFO L413 NwaCegarLoop]: 1010 mSDtfsCounter, 1496 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 2975 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 2698 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:07:51,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 2698 Invalid, 3087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2975 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 08:07:51,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29983 states. [2022-07-21 08:07:52,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29983 to 19908. [2022-07-21 08:07:52,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19908 states, 18004 states have (on average 1.511941790713175) internal successors, (27221), 18080 states have internal predecessors, (27221), 1287 states have call successors, (1287), 506 states have call predecessors, (1287), 615 states have return successors, (2146), 1385 states have call predecessors, (2146), 1286 states have call successors, (2146) [2022-07-21 08:07:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19908 states to 19908 states and 30654 transitions. [2022-07-21 08:07:52,787 INFO L78 Accepts]: Start accepts. Automaton has 19908 states and 30654 transitions. Word has length 145 [2022-07-21 08:07:52,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:07:52,788 INFO L495 AbstractCegarLoop]: Abstraction has 19908 states and 30654 transitions. [2022-07-21 08:07:52,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:07:52,788 INFO L276 IsEmpty]: Start isEmpty. Operand 19908 states and 30654 transitions. [2022-07-21 08:07:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:07:52,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:07:52,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:07:52,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:07:52,797 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:07:52,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:07:52,797 INFO L85 PathProgramCache]: Analyzing trace with hash -919065922, now seen corresponding path program 1 times [2022-07-21 08:07:52,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:07:52,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729149313] [2022-07-21 08:07:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:07:52,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:07:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:07:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:07:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:07:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:07:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:07:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:07:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:07:52,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:07:52,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729149313] [2022-07-21 08:07:52,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729149313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:07:52,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:07:52,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:07:52,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45136788] [2022-07-21 08:07:52,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:07:52,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:07:52,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:07:52,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:07:52,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:07:52,963 INFO L87 Difference]: Start difference. First operand 19908 states and 30654 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:08:00,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:00,231 INFO L93 Difference]: Finished difference Result 75060 states and 118089 transitions. [2022-07-21 08:08:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:08:00,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:08:00,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:00,564 INFO L225 Difference]: With dead ends: 75060 [2022-07-21 08:08:00,564 INFO L226 Difference]: Without dead ends: 56797 [2022-07-21 08:08:00,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:00,609 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 1731 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 2640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:00,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 2537 Invalid, 2640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 08:08:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56797 states. [2022-07-21 08:08:03,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56797 to 37541. [2022-07-21 08:08:03,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37541 states, 34133 states have (on average 1.5234230803035187) internal successors, (51999), 34273 states have internal predecessors, (51999), 2343 states have call successors, (2343), 890 states have call predecessors, (2343), 1063 states have return successors, (4724), 2505 states have call predecessors, (4724), 2342 states have call successors, (4724) [2022-07-21 08:08:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37541 states to 37541 states and 59066 transitions. [2022-07-21 08:08:03,614 INFO L78 Accepts]: Start accepts. Automaton has 37541 states and 59066 transitions. Word has length 145 [2022-07-21 08:08:03,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:03,614 INFO L495 AbstractCegarLoop]: Abstraction has 37541 states and 59066 transitions. [2022-07-21 08:08:03,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:08:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 37541 states and 59066 transitions. [2022-07-21 08:08:03,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:08:03,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:03,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:03,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 08:08:03,630 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:03,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:03,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1082820348, now seen corresponding path program 1 times [2022-07-21 08:08:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:03,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572877716] [2022-07-21 08:08:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:03,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:08:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:08:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:08:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:08:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:03,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:03,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:03,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572877716] [2022-07-21 08:08:03,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572877716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:03,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:03,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:03,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68282630] [2022-07-21 08:08:03,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:03,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:03,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:03,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:03,728 INFO L87 Difference]: Start difference. First operand 37541 states and 59066 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:08:16,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:16,926 INFO L93 Difference]: Finished difference Result 144531 states and 230695 transitions. [2022-07-21 08:08:16,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:08:16,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:08:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:17,280 INFO L225 Difference]: With dead ends: 144531 [2022-07-21 08:08:17,280 INFO L226 Difference]: Without dead ends: 108635 [2022-07-21 08:08:17,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:17,383 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 1474 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:17,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 2660 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 08:08:17,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108635 states. [2022-07-21 08:08:23,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108635 to 73062. [2022-07-21 08:08:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73062 states, 66710 states have (on average 1.530939889072103) internal successors, (102129), 66978 states have internal predecessors, (102129), 4391 states have call successors, (4391), 1658 states have call predecessors, (4391), 1959 states have return successors, (11274), 4681 states have call predecessors, (11274), 4390 states have call successors, (11274) [2022-07-21 08:08:23,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73062 states to 73062 states and 117794 transitions. [2022-07-21 08:08:23,871 INFO L78 Accepts]: Start accepts. Automaton has 73062 states and 117794 transitions. Word has length 145 [2022-07-21 08:08:23,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:23,872 INFO L495 AbstractCegarLoop]: Abstraction has 73062 states and 117794 transitions. [2022-07-21 08:08:23,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:08:23,887 INFO L276 IsEmpty]: Start isEmpty. Operand 73062 states and 117794 transitions. [2022-07-21 08:08:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:08:23,935 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:23,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:23,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 08:08:23,935 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:23,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1485001986, now seen corresponding path program 1 times [2022-07-21 08:08:23,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:23,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321419504] [2022-07-21 08:08:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:23,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:23,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 08:08:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:08:24,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:08:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 08:08:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:24,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:24,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321419504] [2022-07-21 08:08:24,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321419504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:24,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:24,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:24,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066934435] [2022-07-21 08:08:24,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:24,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:24,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:24,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:24,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:24,178 INFO L87 Difference]: Start difference. First operand 73062 states and 117794 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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) [2022-07-21 08:08:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:49,664 INFO L93 Difference]: Finished difference Result 281938 states and 459373 transitions. [2022-07-21 08:08:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:08:49,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-07-21 08:08:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:50,589 INFO L225 Difference]: With dead ends: 281938 [2022-07-21 08:08:50,589 INFO L226 Difference]: Without dead ends: 210521 [2022-07-21 08:08:50,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:50,761 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1652 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:50,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 2531 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 08:08:50,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210521 states. [2022-07-21 08:09:03,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210521 to 143975. [2022-07-21 08:09:03,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143975 states, 131863 states have (on average 1.5357985181589984) internal successors, (202515), 132387 states have internal predecessors, (202515), 8359 states have call successors, (8359), 3194 states have call predecessors, (8359), 3751 states have return successors, (28620), 8905 states have call predecessors, (28620), 8358 states have call successors, (28620)