./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+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 93c2f95927688290d9634a76e5cb5c078ca9f28d9ebb5a85520405b4d17220b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:52:42,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:52:42,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:52:42,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:52:42,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:52:42,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:52:42,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:52:42,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:52:42,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:52:42,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:52:42,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:52:42,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:52:42,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:52:42,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:52:42,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:52:42,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:52:42,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:52:42,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:52:42,980 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:52:42,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:52:42,982 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:52:42,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:52:42,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:52:42,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:52:42,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:52:42,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:52:42,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:52:42,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:52:42,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:52:42,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:52:42,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:52:42,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:52:42,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:52:42,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:52:42,996 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:52:42,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:52:42,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:52:42,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:52:42,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:52:42,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:52:42,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:52:42,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:52:43,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:52:43,018 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:52:43,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:52:43,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:52:43,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:52:43,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:52:43,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:52:43,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:52:43,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:52:43,020 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:52:43,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:52:43,021 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:52:43,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:52:43,021 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:52:43,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:52:43,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:52:43,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:52:43,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:52:43,022 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:52:43,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:52:43,022 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:52:43,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:52:43,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:52:43,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:52:43,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:52:43,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:52:43,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:52:43,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:52:43,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:52:43,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:52:43,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:52:43,024 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:52:43,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:52:43,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:52:43,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93c2f95927688290d9634a76e5cb5c078ca9f28d9ebb5a85520405b4d17220b1 [2022-07-22 20:52:43,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:52:43,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:52:43,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:52:43,258 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:52:43,258 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:52:43,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c [2022-07-22 20:52:43,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ee984c55/4f5b1c9ee6004a79b86630ed5413eee6/FLAG7cf59507e [2022-07-22 20:52:43,710 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:52:43,712 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c [2022-07-22 20:52:43,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ee984c55/4f5b1c9ee6004a79b86630ed5413eee6/FLAG7cf59507e [2022-07-22 20:52:43,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ee984c55/4f5b1c9ee6004a79b86630ed5413eee6 [2022-07-22 20:52:43,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:52:43,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:52:43,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:52:43,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:52:43,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:52:43,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:52:43" (1/1) ... [2022-07-22 20:52:43,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c877b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:43, skipping insertion in model container [2022-07-22 20:52:43,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:52:43" (1/1) ... [2022-07-22 20:52:43,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:52:43,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:52:43,904 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[911,924] [2022-07-22 20:52:43,965 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[8416,8429] [2022-07-22 20:52:44,046 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:52:44,058 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:52:44,067 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[911,924] [2022-07-22 20:52:44,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.09.cil-1.c[8416,8429] [2022-07-22 20:52:44,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:52:44,150 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:52:44,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44 WrapperNode [2022-07-22 20:52:44,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:52:44,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:52:44,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:52:44,152 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:52:44,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44" (1/1) ... [2022-07-22 20:52:44,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44" (1/1) ... [2022-07-22 20:52:44,215 INFO L137 Inliner]: procedures = 73, calls = 88, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 904 [2022-07-22 20:52:44,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:52:44,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:52:44,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:52:44,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:52:44,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44" (1/1) ... [2022-07-22 20:52:44,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44" (1/1) ... [2022-07-22 20:52:44,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44" (1/1) ... [2022-07-22 20:52:44,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44" (1/1) ... [2022-07-22 20:52:44,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44" (1/1) ... [2022-07-22 20:52:44,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44" (1/1) ... [2022-07-22 20:52:44,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44" (1/1) ... [2022-07-22 20:52:44,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:52:44,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:52:44,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:52:44,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:52:44,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44" (1/1) ... [2022-07-22 20:52:44,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:52:44,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:52:44,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 20:52:44,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 20:52:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:52:44,369 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:52:44,370 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:52:44,370 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-22 20:52:44,371 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-22 20:52:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:52:44,371 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:52:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:52:44,371 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:52:44,371 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-22 20:52:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-22 20:52:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:52:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:52:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:52:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:52:44,372 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-22 20:52:44,372 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-22 20:52:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-22 20:52:44,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-22 20:52:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-22 20:52:44,373 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-22 20:52:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:52:44,373 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:52:44,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:52:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:52:44,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:52:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-22 20:52:44,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-22 20:52:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:52:44,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:52:44,374 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:52:44,375 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:52:44,490 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:52:44,491 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:52:44,885 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-22 20:52:44,885 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-22 20:52:44,976 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:52:44,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:52:44,990 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-22 20:52:44,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:52:44 BoogieIcfgContainer [2022-07-22 20:52:44,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:52:44,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:52:44,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:52:44,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:52:44,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:52:43" (1/3) ... [2022-07-22 20:52:44,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebec1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:52:44, skipping insertion in model container [2022-07-22 20:52:44,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:52:44" (2/3) ... [2022-07-22 20:52:44,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebec1bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:52:44, skipping insertion in model container [2022-07-22 20:52:44,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:52:44" (3/3) ... [2022-07-22 20:52:45,001 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.09.cil-1.c [2022-07-22 20:52:45,013 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:52:45,013 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:52:45,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:52:45,071 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@25a8b877, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@74d9c167 [2022-07-22 20:52:45,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:52:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 368 states have (on average 1.625) internal successors, (598), 374 states have internal predecessors, (598), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-07-22 20:52:45,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:52:45,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:45,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:45,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:45,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:45,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1177923463, now seen corresponding path program 1 times [2022-07-22 20:52:45,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:45,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099049884] [2022-07-22 20:52:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:45,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:45,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:45,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:45,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:45,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:45,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:52:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:45,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:52:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:45,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:52:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:45,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:45,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:45,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099049884] [2022-07-22 20:52:45,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099049884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:45,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:45,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:52:45,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964738050] [2022-07-22 20:52:45,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:45,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:52:45,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:52:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:52:45,310 INFO L87 Difference]: Start difference. First operand has 424 states, 368 states have (on average 1.625) internal successors, (598), 374 states have internal predecessors, (598), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:45,851 INFO L93 Difference]: Finished difference Result 842 states and 1340 transitions. [2022-07-22 20:52:45,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 20:52:45,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:52:45,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:45,866 INFO L225 Difference]: With dead ends: 842 [2022-07-22 20:52:45,866 INFO L226 Difference]: Without dead ends: 432 [2022-07-22 20:52:45,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:52:45,873 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 669 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:45,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [681 Valid, 1741 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:52:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-07-22 20:52:45,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 414. [2022-07-22 20:52:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 360 states have (on average 1.5361111111111112) internal successors, (553), 364 states have internal predecessors, (553), 39 states have call successors, (39), 14 states have call predecessors, (39), 13 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-22 20:52:45,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 629 transitions. [2022-07-22 20:52:45,922 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 629 transitions. Word has length 65 [2022-07-22 20:52:45,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:45,923 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 629 transitions. [2022-07-22 20:52:45,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 629 transitions. [2022-07-22 20:52:45,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:52:45,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:45,926 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:45,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:52:45,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:45,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1137248713, now seen corresponding path program 1 times [2022-07-22 20:52:45,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:45,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380477250] [2022-07-22 20:52:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:45,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:45,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:52:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:52:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:52:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:46,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:46,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380477250] [2022-07-22 20:52:46,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380477250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:46,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:46,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:52:46,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616190527] [2022-07-22 20:52:46,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:46,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:52:46,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:46,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:52:46,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:52:46,094 INFO L87 Difference]: Start difference. First operand 414 states and 629 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:46,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:46,848 INFO L93 Difference]: Finished difference Result 669 states and 998 transitions. [2022-07-22 20:52:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:52:46,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:52:46,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:46,853 INFO L225 Difference]: With dead ends: 669 [2022-07-22 20:52:46,853 INFO L226 Difference]: Without dead ends: 565 [2022-07-22 20:52:46,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:52:46,857 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 1394 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:46,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 1881 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:52:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2022-07-22 20:52:46,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 526. [2022-07-22 20:52:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 450 states have (on average 1.508888888888889) internal successors, (679), 456 states have internal predecessors, (679), 52 states have call successors, (52), 21 states have call predecessors, (52), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-07-22 20:52:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 786 transitions. [2022-07-22 20:52:46,911 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 786 transitions. Word has length 65 [2022-07-22 20:52:46,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:46,911 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 786 transitions. [2022-07-22 20:52:46,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 786 transitions. [2022-07-22 20:52:46,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:52:46,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:46,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:46,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:52:46,914 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:46,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:46,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1619378553, now seen corresponding path program 1 times [2022-07-22 20:52:46,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:46,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761082478] [2022-07-22 20:52:46,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:46,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:46,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:46,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:52:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:52:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:52:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:46,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:46,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761082478] [2022-07-22 20:52:46,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761082478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:46,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:46,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:52:46,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802847312] [2022-07-22 20:52:46,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:47,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:52:47,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:47,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:52:47,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:52:47,001 INFO L87 Difference]: Start difference. First operand 526 states and 786 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:47,829 INFO L93 Difference]: Finished difference Result 923 states and 1351 transitions. [2022-07-22 20:52:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 20:52:47,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:52:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:47,834 INFO L225 Difference]: With dead ends: 923 [2022-07-22 20:52:47,834 INFO L226 Difference]: Without dead ends: 714 [2022-07-22 20:52:47,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-22 20:52:47,841 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 1216 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:47,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1245 Valid, 2491 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:52:47,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-07-22 20:52:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 638. [2022-07-22 20:52:47,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 540 states have (on average 1.488888888888889) internal successors, (804), 548 states have internal predecessors, (804), 65 states have call successors, (65), 28 states have call predecessors, (65), 31 states have return successors, (76), 65 states have call predecessors, (76), 63 states have call successors, (76) [2022-07-22 20:52:47,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 945 transitions. [2022-07-22 20:52:47,878 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 945 transitions. Word has length 65 [2022-07-22 20:52:47,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:47,878 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 945 transitions. [2022-07-22 20:52:47,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:47,879 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 945 transitions. [2022-07-22 20:52:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:52:47,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:47,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:47,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:52:47,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:47,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:47,886 INFO L85 PathProgramCache]: Analyzing trace with hash 647002633, now seen corresponding path program 1 times [2022-07-22 20:52:47,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:47,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002747923] [2022-07-22 20:52:47,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:47,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:47,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:47,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:47,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:47,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:52:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:52:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:48,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:52:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:48,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:48,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002747923] [2022-07-22 20:52:48,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002747923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:48,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:48,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:52:48,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673950511] [2022-07-22 20:52:48,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:48,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:52:48,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:48,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:52:48,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:52:48,014 INFO L87 Difference]: Start difference. First operand 638 states and 945 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 20:52:49,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:49,394 INFO L93 Difference]: Finished difference Result 2184 states and 3142 transitions. [2022-07-22 20:52:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:52:49,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-22 20:52:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:49,403 INFO L225 Difference]: With dead ends: 2184 [2022-07-22 20:52:49,403 INFO L226 Difference]: Without dead ends: 1851 [2022-07-22 20:52:49,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 20:52:49,410 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 3313 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 1847 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3331 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 1847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:49,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3331 Valid, 2835 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 1847 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:52:49,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2022-07-22 20:52:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1691. [2022-07-22 20:52:49,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1388 states have (on average 1.404899135446686) internal successors, (1950), 1411 states have internal predecessors, (1950), 175 states have call successors, (175), 111 states have call predecessors, (175), 126 states have return successors, (209), 171 states have call predecessors, (209), 173 states have call successors, (209) [2022-07-22 20:52:49,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 2334 transitions. [2022-07-22 20:52:49,500 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 2334 transitions. Word has length 65 [2022-07-22 20:52:49,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:49,501 INFO L495 AbstractCegarLoop]: Abstraction has 1691 states and 2334 transitions. [2022-07-22 20:52:49,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 20:52:49,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 2334 transitions. [2022-07-22 20:52:49,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:52:49,502 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:49,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:49,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:52:49,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1861088182, now seen corresponding path program 1 times [2022-07-22 20:52:49,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:49,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304474396] [2022-07-22 20:52:49,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:49,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:49,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:49,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:49,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:49,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:49,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:52:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:49,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:52:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:49,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:52:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:49,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:49,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304474396] [2022-07-22 20:52:49,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304474396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:49,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:49,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:52:49,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355927126] [2022-07-22 20:52:49,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:49,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:52:49,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:49,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:52:49,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:52:49,618 INFO L87 Difference]: Start difference. First operand 1691 states and 2334 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:52:50,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:50,398 INFO L93 Difference]: Finished difference Result 3219 states and 4413 transitions. [2022-07-22 20:52:50,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:52:50,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:52:50,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:50,406 INFO L225 Difference]: With dead ends: 3219 [2022-07-22 20:52:50,406 INFO L226 Difference]: Without dead ends: 1839 [2022-07-22 20:52:50,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:52:50,409 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 546 mSDsluCounter, 2127 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 1567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:50,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 2743 Invalid, 1567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:52:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2022-07-22 20:52:50,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1731. [2022-07-22 20:52:50,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1420 states have (on average 1.3915492957746478) internal successors, (1976), 1443 states have internal predecessors, (1976), 175 states have call successors, (175), 111 states have call predecessors, (175), 134 states have return successors, (217), 179 states have call predecessors, (217), 173 states have call successors, (217) [2022-07-22 20:52:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2368 transitions. [2022-07-22 20:52:50,484 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2368 transitions. Word has length 66 [2022-07-22 20:52:50,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:50,484 INFO L495 AbstractCegarLoop]: Abstraction has 1731 states and 2368 transitions. [2022-07-22 20:52:50,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:52:50,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2368 transitions. [2022-07-22 20:52:50,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:52:50,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:50,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:50,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:52:50,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:50,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:50,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1404519816, now seen corresponding path program 1 times [2022-07-22 20:52:50,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:50,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334696761] [2022-07-22 20:52:50,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:50,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:50,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:50,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:50,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:52:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:52:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:50,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:52:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:50,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:50,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334696761] [2022-07-22 20:52:50,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334696761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:50,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:50,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:52:50,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615463114] [2022-07-22 20:52:50,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:50,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:52:50,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:52:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:52:50,567 INFO L87 Difference]: Start difference. First operand 1731 states and 2368 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:52:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:52,331 INFO L93 Difference]: Finished difference Result 5303 states and 7242 transitions. [2022-07-22 20:52:52,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:52:52,332 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-22 20:52:52,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:52,339 INFO L225 Difference]: With dead ends: 5303 [2022-07-22 20:52:52,339 INFO L226 Difference]: Without dead ends: 2122 [2022-07-22 20:52:52,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 20:52:52,345 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 3425 mSDsluCounter, 2100 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3443 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 2426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 662 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:52,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3443 Valid, 2856 Invalid, 2426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [662 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:52:52,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2022-07-22 20:52:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1942. [2022-07-22 20:52:52,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1942 states, 1559 states have (on average 1.3483001924310456) internal successors, (2102), 1584 states have internal predecessors, (2102), 215 states have call successors, (215), 139 states have call predecessors, (215), 166 states have return successors, (263), 221 states have call predecessors, (263), 213 states have call successors, (263) [2022-07-22 20:52:52,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1942 states to 1942 states and 2580 transitions. [2022-07-22 20:52:52,405 INFO L78 Accepts]: Start accepts. Automaton has 1942 states and 2580 transitions. Word has length 66 [2022-07-22 20:52:52,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:52,405 INFO L495 AbstractCegarLoop]: Abstraction has 1942 states and 2580 transitions. [2022-07-22 20:52:52,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:52:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1942 states and 2580 transitions. [2022-07-22 20:52:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:52:52,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:52,407 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:52,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:52:52,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:52,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash -934912176, now seen corresponding path program 1 times [2022-07-22 20:52:52,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:52,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237591917] [2022-07-22 20:52:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:52,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:52,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:52,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:52,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:52,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:52:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:52:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:52:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:52:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:52:52,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:52,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237591917] [2022-07-22 20:52:52,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237591917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:52,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:52,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:52:52,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684464320] [2022-07-22 20:52:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:52,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:52:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:52:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:52:52,533 INFO L87 Difference]: Start difference. First operand 1942 states and 2580 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:52:53,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:53,330 INFO L93 Difference]: Finished difference Result 3767 states and 4982 transitions. [2022-07-22 20:52:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:52:53,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-07-22 20:52:53,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:53,338 INFO L225 Difference]: With dead ends: 3767 [2022-07-22 20:52:53,338 INFO L226 Difference]: Without dead ends: 2136 [2022-07-22 20:52:53,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:52:53,342 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 800 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:53,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 2414 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:52:53,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2022-07-22 20:52:53,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2002. [2022-07-22 20:52:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1607 states have (on average 1.3341630367143746) internal successors, (2144), 1632 states have internal predecessors, (2144), 215 states have call successors, (215), 139 states have call predecessors, (215), 178 states have return successors, (275), 233 states have call predecessors, (275), 213 states have call successors, (275) [2022-07-22 20:52:53,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2634 transitions. [2022-07-22 20:52:53,403 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2634 transitions. Word has length 91 [2022-07-22 20:52:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:53,403 INFO L495 AbstractCegarLoop]: Abstraction has 2002 states and 2634 transitions. [2022-07-22 20:52:53,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:52:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2634 transitions. [2022-07-22 20:52:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:52:53,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:53,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:53,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:52:53,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:53,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:53,405 INFO L85 PathProgramCache]: Analyzing trace with hash -491011502, now seen corresponding path program 1 times [2022-07-22 20:52:53,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:53,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496362287] [2022-07-22 20:52:53,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:53,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:53,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:53,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:53,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:53,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:53,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:52:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:53,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:52:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:52:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:52:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:53,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:52:53,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:53,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496362287] [2022-07-22 20:52:53,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496362287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:53,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:53,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:52:53,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351274108] [2022-07-22 20:52:53,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:53,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:52:53,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:53,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:52:53,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:52:53,507 INFO L87 Difference]: Start difference. First operand 2002 states and 2634 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:54,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:54,338 INFO L93 Difference]: Finished difference Result 3529 states and 4598 transitions. [2022-07-22 20:52:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 20:52:54,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:52:54,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:54,347 INFO L225 Difference]: With dead ends: 3529 [2022-07-22 20:52:54,347 INFO L226 Difference]: Without dead ends: 2076 [2022-07-22 20:52:54,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-22 20:52:54,350 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 1237 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:54,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 2175 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:52:54,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2022-07-22 20:52:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 1781. [2022-07-22 20:52:54,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1439 states have (on average 1.3384294649061848) internal successors, (1926), 1459 states have internal predecessors, (1926), 187 states have call successors, (187), 120 states have call predecessors, (187), 153 states have return successors, (235), 203 states have call predecessors, (235), 185 states have call successors, (235) [2022-07-22 20:52:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2348 transitions. [2022-07-22 20:52:54,403 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2348 transitions. Word has length 91 [2022-07-22 20:52:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:54,404 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 2348 transitions. [2022-07-22 20:52:54,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2348 transitions. [2022-07-22 20:52:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:52:54,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:54,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:54,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:52:54,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:54,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1448150544, now seen corresponding path program 1 times [2022-07-22 20:52:54,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:54,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72371495] [2022-07-22 20:52:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:54,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:54,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:54,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:54,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:54,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:54,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:52:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:52:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:54,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:52:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:52:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:54,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:52:54,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:54,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72371495] [2022-07-22 20:52:54,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72371495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:54,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:54,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:54,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761737836] [2022-07-22 20:52:54,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:54,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:54,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:54,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:54,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:54,482 INFO L87 Difference]: Start difference. First operand 1781 states and 2348 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:52:54,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:54,929 INFO L93 Difference]: Finished difference Result 4933 states and 6460 transitions. [2022-07-22 20:52:54,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:52:54,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-22 20:52:54,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:54,940 INFO L225 Difference]: With dead ends: 4933 [2022-07-22 20:52:54,940 INFO L226 Difference]: Without dead ends: 3464 [2022-07-22 20:52:54,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:52:54,943 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 1155 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:54,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 1809 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:52:54,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3464 states. [2022-07-22 20:52:55,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3464 to 3250. [2022-07-22 20:52:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 2588 states have (on average 1.295981452859351) internal successors, (3354), 2637 states have internal predecessors, (3354), 348 states have call successors, (348), 233 states have call predecessors, (348), 312 states have return successors, (518), 382 states have call predecessors, (518), 346 states have call successors, (518) [2022-07-22 20:52:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 4220 transitions. [2022-07-22 20:52:55,054 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 4220 transitions. Word has length 91 [2022-07-22 20:52:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:55,055 INFO L495 AbstractCegarLoop]: Abstraction has 3250 states and 4220 transitions. [2022-07-22 20:52:55,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:52:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 4220 transitions. [2022-07-22 20:52:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:52:55,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:55,056 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:55,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:52:55,057 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:55,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:55,057 INFO L85 PathProgramCache]: Analyzing trace with hash 390312466, now seen corresponding path program 1 times [2022-07-22 20:52:55,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:55,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434606271] [2022-07-22 20:52:55,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:55,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:52:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:52:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:52:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:52:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:52:55,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:55,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434606271] [2022-07-22 20:52:55,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434606271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:55,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:55,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:52:55,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804901669] [2022-07-22 20:52:55,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:55,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:52:55,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:55,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:52:55,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:52:55,100 INFO L87 Difference]: Start difference. First operand 3250 states and 4220 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:55,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:55,515 INFO L93 Difference]: Finished difference Result 4834 states and 6204 transitions. [2022-07-22 20:52:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 20:52:55,516 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:52:55,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:55,522 INFO L225 Difference]: With dead ends: 4834 [2022-07-22 20:52:55,522 INFO L226 Difference]: Without dead ends: 1896 [2022-07-22 20:52:55,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:52:55,527 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 916 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:55,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 1385 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:52:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-07-22 20:52:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1781. [2022-07-22 20:52:55,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1439 states have (on average 1.3127171646977067) internal successors, (1889), 1459 states have internal predecessors, (1889), 187 states have call successors, (187), 120 states have call predecessors, (187), 153 states have return successors, (235), 203 states have call predecessors, (235), 185 states have call successors, (235) [2022-07-22 20:52:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2311 transitions. [2022-07-22 20:52:55,575 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2311 transitions. Word has length 91 [2022-07-22 20:52:55,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:55,575 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 2311 transitions. [2022-07-22 20:52:55,576 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2311 transitions. [2022-07-22 20:52:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 20:52:55,576 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:55,577 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:55,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 20:52:55,577 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:55,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:55,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1802771828, now seen corresponding path program 1 times [2022-07-22 20:52:55,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:55,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989295689] [2022-07-22 20:52:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:55,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:52:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:52:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:52:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:52:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:52:55,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:55,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989295689] [2022-07-22 20:52:55,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989295689] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:55,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:55,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:52:55,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262114959] [2022-07-22 20:52:55,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:55,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:52:55,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:55,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:52:55,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:52:55,633 INFO L87 Difference]: Start difference. First operand 1781 states and 2311 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:52:56,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:56,647 INFO L93 Difference]: Finished difference Result 4122 states and 5300 transitions. [2022-07-22 20:52:56,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 20:52:56,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-22 20:52:56,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:56,655 INFO L225 Difference]: With dead ends: 4122 [2022-07-22 20:52:56,655 INFO L226 Difference]: Without dead ends: 2579 [2022-07-22 20:52:56,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-22 20:52:56,659 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 2156 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:56,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2195 Valid, 2000 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:52:56,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2022-07-22 20:52:56,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2402. [2022-07-22 20:52:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1906 states have (on average 1.2759706190975866) internal successors, (2432), 1934 states have internal predecessors, (2432), 264 states have call successors, (264), 168 states have call predecessors, (264), 230 states have return successors, (366), 301 states have call predecessors, (366), 262 states have call successors, (366) [2022-07-22 20:52:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3062 transitions. [2022-07-22 20:52:56,726 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3062 transitions. Word has length 92 [2022-07-22 20:52:56,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:56,726 INFO L495 AbstractCegarLoop]: Abstraction has 2402 states and 3062 transitions. [2022-07-22 20:52:56,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:52:56,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3062 transitions. [2022-07-22 20:52:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:52:56,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:56,728 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] [2022-07-22 20:52:56,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 20:52:56,728 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:56,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:56,728 INFO L85 PathProgramCache]: Analyzing trace with hash -971775259, now seen corresponding path program 1 times [2022-07-22 20:52:56,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:56,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752374837] [2022-07-22 20:52:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:56,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:56,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:56,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:52:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:56,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:52:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:52:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:56,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:52:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:56,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:56,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752374837] [2022-07-22 20:52:56,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752374837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:56,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:56,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:52:56,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367625025] [2022-07-22 20:52:56,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:56,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:52:56,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:56,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:52:56,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:52:56,799 INFO L87 Difference]: Start difference. First operand 2402 states and 3062 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) [2022-07-22 20:52:57,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:57,783 INFO L93 Difference]: Finished difference Result 2800 states and 3700 transitions. [2022-07-22 20:52:57,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:52:57,784 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 [2022-07-22 20:52:57,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:57,791 INFO L225 Difference]: With dead ends: 2800 [2022-07-22 20:52:57,791 INFO L226 Difference]: Without dead ends: 2511 [2022-07-22 20:52:57,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:52:57,793 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 908 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:57,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 1166 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:52:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2022-07-22 20:52:57,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2402. [2022-07-22 20:52:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 1906 states have (on average 1.275445960125918) internal successors, (2431), 1934 states have internal predecessors, (2431), 264 states have call successors, (264), 168 states have call predecessors, (264), 230 states have return successors, (366), 301 states have call predecessors, (366), 262 states have call successors, (366) [2022-07-22 20:52:57,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 3061 transitions. [2022-07-22 20:52:57,899 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 3061 transitions. Word has length 145 [2022-07-22 20:52:57,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:57,899 INFO L495 AbstractCegarLoop]: Abstraction has 2402 states and 3061 transitions. [2022-07-22 20:52:57,899 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) [2022-07-22 20:52:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 3061 transitions. [2022-07-22 20:52:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:52:57,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:57,901 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] [2022-07-22 20:52:57,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:52:57,901 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:57,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:57,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1646935385, now seen corresponding path program 1 times [2022-07-22 20:52:57,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:57,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772401183] [2022-07-22 20:52:57,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:57,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:57,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:57,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:52:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:57,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:52:57,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:57,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:52:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:57,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:52:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:57,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:57,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772401183] [2022-07-22 20:52:57,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772401183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:57,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:57,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:52:57,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566205924] [2022-07-22 20:52:57,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:57,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:52:57,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:57,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:52:57,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:52:57,985 INFO L87 Difference]: Start difference. First operand 2402 states and 3061 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) [2022-07-22 20:52:59,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:59,709 INFO L93 Difference]: Finished difference Result 3202 states and 4348 transitions. [2022-07-22 20:52:59,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:52:59,710 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 [2022-07-22 20:52:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:59,718 INFO L225 Difference]: With dead ends: 3202 [2022-07-22 20:52:59,718 INFO L226 Difference]: Without dead ends: 2917 [2022-07-22 20:52:59,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:52:59,719 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1446 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:59,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1624 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 20:52:59,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2917 states. [2022-07-22 20:52:59,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2917 to 2700. [2022-07-22 20:52:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 2179 states have (on average 1.3143643873336393) internal successors, (2864), 2208 states have internal predecessors, (2864), 282 states have call successors, (282), 174 states have call predecessors, (282), 237 states have return successors, (387), 319 states have call predecessors, (387), 280 states have call successors, (387) [2022-07-22 20:52:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3533 transitions. [2022-07-22 20:52:59,825 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3533 transitions. Word has length 145 [2022-07-22 20:52:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:59,825 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 3533 transitions. [2022-07-22 20:52:59,831 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) [2022-07-22 20:52:59,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3533 transitions. [2022-07-22 20:52:59,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:52:59,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:59,832 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] [2022-07-22 20:52:59,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:52:59,833 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:59,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash 96068139, now seen corresponding path program 1 times [2022-07-22 20:52:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:59,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376342834] [2022-07-22 20:52:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:59,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:59,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:52:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:52:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:52:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:59,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:52:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:59,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:59,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376342834] [2022-07-22 20:52:59,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376342834] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:59,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:59,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:59,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686435226] [2022-07-22 20:52:59,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:59,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:59,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:59,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:59,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:59,955 INFO L87 Difference]: Start difference. First operand 2700 states and 3533 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) [2022-07-22 20:53:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:02,156 INFO L93 Difference]: Finished difference Result 3920 states and 5495 transitions. [2022-07-22 20:53:02,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:53:02,156 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 [2022-07-22 20:53:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:02,170 INFO L225 Difference]: With dead ends: 3920 [2022-07-22 20:53:02,171 INFO L226 Difference]: Without dead ends: 3337 [2022-07-22 20:53:02,172 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 [2022-07-22 20:53:02,173 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 1463 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:02,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 2652 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2659 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 20:53:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3337 states. [2022-07-22 20:53:02,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3337 to 2977. [2022-07-22 20:53:02,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2977 states, 2431 states have (on average 1.3389551624845744) internal successors, (3255), 2461 states have internal predecessors, (3255), 300 states have call successors, (300), 180 states have call predecessors, (300), 244 states have return successors, (407), 338 states have call predecessors, (407), 298 states have call successors, (407) [2022-07-22 20:53:02,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2977 states to 2977 states and 3962 transitions. [2022-07-22 20:53:02,288 INFO L78 Accepts]: Start accepts. Automaton has 2977 states and 3962 transitions. Word has length 145 [2022-07-22 20:53:02,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:02,288 INFO L495 AbstractCegarLoop]: Abstraction has 2977 states and 3962 transitions. [2022-07-22 20:53:02,288 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) [2022-07-22 20:53:02,288 INFO L276 IsEmpty]: Start isEmpty. Operand 2977 states and 3962 transitions. [2022-07-22 20:53:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:53:02,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:02,290 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] [2022-07-22 20:53:02,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:53:02,290 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:02,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:02,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1043106025, now seen corresponding path program 1 times [2022-07-22 20:53:02,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:02,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689392338] [2022-07-22 20:53:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:02,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:02,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:02,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:53:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:02,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:53:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:53:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:02,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:53:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:02,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:02,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:02,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689392338] [2022-07-22 20:53:02,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689392338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:02,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:02,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:02,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555576069] [2022-07-22 20:53:02,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:02,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:02,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:02,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:02,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:02,378 INFO L87 Difference]: Start difference. First operand 2977 states and 3962 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) [2022-07-22 20:53:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:04,378 INFO L93 Difference]: Finished difference Result 4978 states and 7172 transitions. [2022-07-22 20:53:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:53:04,378 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 [2022-07-22 20:53:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:04,410 INFO L225 Difference]: With dead ends: 4978 [2022-07-22 20:53:04,410 INFO L226 Difference]: Without dead ends: 4118 [2022-07-22 20:53:04,426 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 [2022-07-22 20:53:04,427 INFO L413 NwaCegarLoop]: 916 mSDtfsCounter, 1460 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2661 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 2644 SdHoareTripleChecker+Invalid, 2773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:04,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 2644 Invalid, 2773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2661 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 20:53:04,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2022-07-22 20:53:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 3532. [2022-07-22 20:53:04,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 2936 states have (on average 1.375340599455041) internal successors, (4038), 2968 states have internal predecessors, (4038), 336 states have call successors, (336), 192 states have call predecessors, (336), 258 states have return successors, (451), 376 states have call predecessors, (451), 334 states have call successors, (451) [2022-07-22 20:53:04,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 4825 transitions. [2022-07-22 20:53:04,609 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 4825 transitions. Word has length 145 [2022-07-22 20:53:04,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:04,609 INFO L495 AbstractCegarLoop]: Abstraction has 3532 states and 4825 transitions. [2022-07-22 20:53:04,610 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) [2022-07-22 20:53:04,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 4825 transitions. [2022-07-22 20:53:04,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:53:04,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:04,611 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] [2022-07-22 20:53:04,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:53:04,612 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:04,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1904939627, now seen corresponding path program 1 times [2022-07-22 20:53:04,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:04,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889911940] [2022-07-22 20:53:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:04,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:04,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:04,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:53:04,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:04,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:53:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:04,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:53:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:53:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:04,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:04,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:04,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889911940] [2022-07-22 20:53:04,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889911940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:04,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:04,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:04,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465061899] [2022-07-22 20:53:04,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:04,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:04,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:04,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:04,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:04,739 INFO L87 Difference]: Start difference. First operand 3532 states and 4825 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) [2022-07-22 20:53:06,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:06,867 INFO L93 Difference]: Finished difference Result 7013 states and 10379 transitions. [2022-07-22 20:53:06,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:53:06,868 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 [2022-07-22 20:53:06,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:06,885 INFO L225 Difference]: With dead ends: 7013 [2022-07-22 20:53:06,885 INFO L226 Difference]: Without dead ends: 5598 [2022-07-22 20:53:06,889 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 [2022-07-22 20:53:06,889 INFO L413 NwaCegarLoop]: 912 mSDtfsCounter, 1456 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2656 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 2768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:06,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 2640 Invalid, 2768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2656 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 20:53:06,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5598 states. [2022-07-22 20:53:07,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5598 to 4643. [2022-07-22 20:53:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4643 states, 3947 states have (on average 1.4198125158348112) internal successors, (5604), 3983 states have internal predecessors, (5604), 408 states have call successors, (408), 216 states have call predecessors, (408), 286 states have return successors, (545), 452 states have call predecessors, (545), 406 states have call successors, (545) [2022-07-22 20:53:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4643 states to 4643 states and 6557 transitions. [2022-07-22 20:53:07,135 INFO L78 Accepts]: Start accepts. Automaton has 4643 states and 6557 transitions. Word has length 145 [2022-07-22 20:53:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:07,136 INFO L495 AbstractCegarLoop]: Abstraction has 4643 states and 6557 transitions. [2022-07-22 20:53:07,136 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) [2022-07-22 20:53:07,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4643 states and 6557 transitions. [2022-07-22 20:53:07,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:53:07,138 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:07,138 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] [2022-07-22 20:53:07,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:53:07,139 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:07,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:07,139 INFO L85 PathProgramCache]: Analyzing trace with hash -145469271, now seen corresponding path program 1 times [2022-07-22 20:53:07,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:07,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856994830] [2022-07-22 20:53:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:07,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:07,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:53:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:53:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:53:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:53:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:07,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:07,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856994830] [2022-07-22 20:53:07,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856994830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:07,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:07,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:07,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611475828] [2022-07-22 20:53:07,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:07,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:07,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:07,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:07,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:07,243 INFO L87 Difference]: Start difference. First operand 4643 states and 6557 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) [2022-07-22 20:53:09,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:09,623 INFO L93 Difference]: Finished difference Result 11082 states and 16809 transitions. [2022-07-22 20:53:09,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:53:09,623 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 [2022-07-22 20:53:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:09,646 INFO L225 Difference]: With dead ends: 11082 [2022-07-22 20:53:09,647 INFO L226 Difference]: Without dead ends: 8556 [2022-07-22 20:53:09,654 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 [2022-07-22 20:53:09,655 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 1452 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:09,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 2636 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 20:53:09,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8556 states. [2022-07-22 20:53:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8556 to 6870. [2022-07-22 20:53:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6870 states, 5974 states have (on average 1.4633411449615) internal successors, (8742), 6018 states have internal predecessors, (8742), 552 states have call successors, (552), 264 states have call predecessors, (552), 342 states have return successors, (751), 604 states have call predecessors, (751), 550 states have call successors, (751) [2022-07-22 20:53:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 10045 transitions. [2022-07-22 20:53:10,007 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 10045 transitions. Word has length 145 [2022-07-22 20:53:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:10,008 INFO L495 AbstractCegarLoop]: Abstraction has 6870 states and 10045 transitions. [2022-07-22 20:53:10,008 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) [2022-07-22 20:53:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 10045 transitions. [2022-07-22 20:53:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:53:10,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:10,011 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] [2022-07-22 20:53:10,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:53:10,012 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:10,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:10,012 INFO L85 PathProgramCache]: Analyzing trace with hash 342577835, now seen corresponding path program 1 times [2022-07-22 20:53:10,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:10,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647483187] [2022-07-22 20:53:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:10,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:53:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:53:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:53:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:53:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:10,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:10,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647483187] [2022-07-22 20:53:10,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647483187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:10,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:10,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:10,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409834108] [2022-07-22 20:53:10,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:10,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:10,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:10,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:10,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:10,114 INFO L87 Difference]: Start difference. First operand 6870 states and 10045 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) [2022-07-22 20:53:11,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:11,531 INFO L93 Difference]: Finished difference Result 13387 states and 20520 transitions. [2022-07-22 20:53:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:53:11,532 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 [2022-07-22 20:53:11,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:11,552 INFO L225 Difference]: With dead ends: 13387 [2022-07-22 20:53:11,552 INFO L226 Difference]: Without dead ends: 8634 [2022-07-22 20:53:11,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:11,563 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 1298 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:11,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1327 Valid, 1390 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:53:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8634 states. [2022-07-22 20:53:11,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8634 to 6870. [2022-07-22 20:53:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6870 states, 5974 states have (on average 1.4604954804151322) internal successors, (8725), 6018 states have internal predecessors, (8725), 552 states have call successors, (552), 264 states have call predecessors, (552), 342 states have return successors, (751), 604 states have call predecessors, (751), 550 states have call successors, (751) [2022-07-22 20:53:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 10028 transitions. [2022-07-22 20:53:11,944 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 10028 transitions. Word has length 145 [2022-07-22 20:53:11,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:11,944 INFO L495 AbstractCegarLoop]: Abstraction has 6870 states and 10028 transitions. [2022-07-22 20:53:11,944 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) [2022-07-22 20:53:11,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 10028 transitions. [2022-07-22 20:53:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:53:11,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:11,948 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] [2022-07-22 20:53:11,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 20:53:11,948 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:11,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:11,948 INFO L85 PathProgramCache]: Analyzing trace with hash -750057367, now seen corresponding path program 1 times [2022-07-22 20:53:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:11,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601600353] [2022-07-22 20:53:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:11,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:11,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:11,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:53:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:12,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:53:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:53:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:53:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:12,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:12,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601600353] [2022-07-22 20:53:12,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601600353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:12,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:12,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:12,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571542838] [2022-07-22 20:53:12,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:12,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:12,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:12,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:12,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:12,052 INFO L87 Difference]: Start difference. First operand 6870 states and 10028 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) [2022-07-22 20:53:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:13,633 INFO L93 Difference]: Finished difference Result 13369 states and 20434 transitions. [2022-07-22 20:53:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:53:13,634 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 [2022-07-22 20:53:13,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:13,655 INFO L225 Difference]: With dead ends: 13369 [2022-07-22 20:53:13,655 INFO L226 Difference]: Without dead ends: 8616 [2022-07-22 20:53:13,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:13,667 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 1167 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:13,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 1571 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:53:13,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8616 states. [2022-07-22 20:53:14,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8616 to 6870. [2022-07-22 20:53:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6870 states, 5974 states have (on average 1.4576498158687647) internal successors, (8708), 6018 states have internal predecessors, (8708), 552 states have call successors, (552), 264 states have call predecessors, (552), 342 states have return successors, (751), 604 states have call predecessors, (751), 550 states have call successors, (751) [2022-07-22 20:53:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6870 states to 6870 states and 10011 transitions. [2022-07-22 20:53:14,052 INFO L78 Accepts]: Start accepts. Automaton has 6870 states and 10011 transitions. Word has length 145 [2022-07-22 20:53:14,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:14,052 INFO L495 AbstractCegarLoop]: Abstraction has 6870 states and 10011 transitions. [2022-07-22 20:53:14,053 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) [2022-07-22 20:53:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 6870 states and 10011 transitions. [2022-07-22 20:53:14,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:53:14,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:14,061 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] [2022-07-22 20:53:14,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:53:14,062 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:14,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:14,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2032229653, now seen corresponding path program 1 times [2022-07-22 20:53:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:14,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761653618] [2022-07-22 20:53:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:14,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:53:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:53:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:53:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:53:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:14,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:14,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:14,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761653618] [2022-07-22 20:53:14,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761653618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:14,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:14,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:14,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479814478] [2022-07-22 20:53:14,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:14,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:14,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:14,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:14,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:14,148 INFO L87 Difference]: Start difference. First operand 6870 states and 10011 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) [2022-07-22 20:53:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:17,027 INFO L93 Difference]: Finished difference Result 19164 states and 29455 transitions. [2022-07-22 20:53:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:53:17,028 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 [2022-07-22 20:53:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:17,063 INFO L225 Difference]: With dead ends: 19164 [2022-07-22 20:53:17,063 INFO L226 Difference]: Without dead ends: 14411 [2022-07-22 20:53:17,075 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 [2022-07-22 20:53:17,076 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 1434 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 2592 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 2614 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:17,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 2614 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2592 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 20:53:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14411 states. [2022-07-22 20:53:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14411 to 11386. [2022-07-22 20:53:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11386 states, 10090 states have (on average 1.490386521308226) internal successors, (15038), 10150 states have internal predecessors, (15038), 840 states have call successors, (840), 360 states have call predecessors, (840), 454 states have return successors, (1217), 908 states have call predecessors, (1217), 838 states have call successors, (1217) [2022-07-22 20:53:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11386 states to 11386 states and 17095 transitions. [2022-07-22 20:53:17,780 INFO L78 Accepts]: Start accepts. Automaton has 11386 states and 17095 transitions. Word has length 145 [2022-07-22 20:53:17,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:17,781 INFO L495 AbstractCegarLoop]: Abstraction has 11386 states and 17095 transitions. [2022-07-22 20:53:17,781 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) [2022-07-22 20:53:17,781 INFO L276 IsEmpty]: Start isEmpty. Operand 11386 states and 17095 transitions. [2022-07-22 20:53:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:53:17,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:17,786 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] [2022-07-22 20:53:17,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:53:17,787 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:17,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:17,787 INFO L85 PathProgramCache]: Analyzing trace with hash 540734957, now seen corresponding path program 1 times [2022-07-22 20:53:17,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:17,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581201378] [2022-07-22 20:53:17,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:17,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:53:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:53:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:53:17,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:53:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:17,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:17,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581201378] [2022-07-22 20:53:17,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581201378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:17,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:17,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:17,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960182371] [2022-07-22 20:53:17,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:17,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:17,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:17,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:17,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:17,867 INFO L87 Difference]: Start difference. First operand 11386 states and 17095 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) [2022-07-22 20:53:19,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:19,641 INFO L93 Difference]: Finished difference Result 23819 states and 37022 transitions. [2022-07-22 20:53:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:53:19,641 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 [2022-07-22 20:53:19,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:19,680 INFO L225 Difference]: With dead ends: 23819 [2022-07-22 20:53:19,681 INFO L226 Difference]: Without dead ends: 14550 [2022-07-22 20:53:19,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:53:19,698 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1296 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:19,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 1375 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:53:19,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14550 states. [2022-07-22 20:53:20,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14550 to 11386. [2022-07-22 20:53:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11386 states, 10090 states have (on average 1.4871159563924679) internal successors, (15005), 10150 states have internal predecessors, (15005), 840 states have call successors, (840), 360 states have call predecessors, (840), 454 states have return successors, (1217), 908 states have call predecessors, (1217), 838 states have call successors, (1217) [2022-07-22 20:53:20,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11386 states to 11386 states and 17062 transitions. [2022-07-22 20:53:20,400 INFO L78 Accepts]: Start accepts. Automaton has 11386 states and 17062 transitions. Word has length 145 [2022-07-22 20:53:20,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:20,400 INFO L495 AbstractCegarLoop]: Abstraction has 11386 states and 17062 transitions. [2022-07-22 20:53:20,401 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) [2022-07-22 20:53:20,401 INFO L276 IsEmpty]: Start isEmpty. Operand 11386 states and 17062 transitions. [2022-07-22 20:53:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:53:20,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:20,406 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] [2022-07-22 20:53:20,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:53:20,406 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:20,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:20,406 INFO L85 PathProgramCache]: Analyzing trace with hash 208091819, now seen corresponding path program 1 times [2022-07-22 20:53:20,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:20,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637341990] [2022-07-22 20:53:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:20,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:53:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:53:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:53:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:53:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:20,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:20,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637341990] [2022-07-22 20:53:20,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637341990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:20,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:20,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:20,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913916369] [2022-07-22 20:53:20,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:20,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:20,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:20,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:20,489 INFO L87 Difference]: Start difference. First operand 11386 states and 17062 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) [2022-07-22 20:53:25,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:25,328 INFO L93 Difference]: Finished difference Result 39724 states and 61659 transitions. [2022-07-22 20:53:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:53:25,329 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 [2022-07-22 20:53:25,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:25,515 INFO L225 Difference]: With dead ends: 39724 [2022-07-22 20:53:25,515 INFO L226 Difference]: Without dead ends: 30455 [2022-07-22 20:53:25,534 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 [2022-07-22 20:53:25,547 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 1519 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 2999 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2745 SdHoareTripleChecker+Invalid, 3117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:25,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2745 Invalid, 3117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2999 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-22 20:53:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30455 states. [2022-07-22 20:53:26,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30455 to 20380. [2022-07-22 20:53:26,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20380 states, 18316 states have (on average 1.5088993229962875) internal successors, (27637), 18408 states have internal predecessors, (27637), 1384 states have call successors, (1384), 552 states have call predecessors, (1384), 678 states have return successors, (2279), 1484 states have call predecessors, (2279), 1382 states have call successors, (2279) [2022-07-22 20:53:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20380 states to 20380 states and 31300 transitions. [2022-07-22 20:53:27,027 INFO L78 Accepts]: Start accepts. Automaton has 20380 states and 31300 transitions. Word has length 145 [2022-07-22 20:53:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:27,028 INFO L495 AbstractCegarLoop]: Abstraction has 20380 states and 31300 transitions. [2022-07-22 20:53:27,028 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) [2022-07-22 20:53:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 20380 states and 31300 transitions. [2022-07-22 20:53:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:53:27,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:27,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:53:27,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 20:53:27,037 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:27,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:27,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2137024045, now seen corresponding path program 1 times [2022-07-22 20:53:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:27,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898798941] [2022-07-22 20:53:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:27,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:27,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:27,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:27,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:53:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:53:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:27,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:53:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:53:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:27,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:27,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898798941] [2022-07-22 20:53:27,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898798941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:27,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:27,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:27,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929967920] [2022-07-22 20:53:27,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:27,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:27,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:27,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:27,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:27,118 INFO L87 Difference]: Start difference. First operand 20380 states and 31300 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) [2022-07-22 20:53:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:34,524 INFO L93 Difference]: Finished difference Result 75532 states and 118735 transitions. [2022-07-22 20:53:34,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:53:34,525 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 [2022-07-22 20:53:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:34,683 INFO L225 Difference]: With dead ends: 75532 [2022-07-22 20:53:34,683 INFO L226 Difference]: Without dead ends: 57269 [2022-07-22 20:53:34,729 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 [2022-07-22 20:53:34,730 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 1754 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:34,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 2584 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 20:53:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57269 states. [2022-07-22 20:53:37,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57269 to 38013. [2022-07-22 20:53:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38013 states, 34445 states have (on average 1.5217012628828568) internal successors, (52415), 34601 states have internal predecessors, (52415), 2440 states have call successors, (2440), 936 states have call predecessors, (2440), 1126 states have return successors, (4857), 2604 states have call predecessors, (4857), 2438 states have call successors, (4857) [2022-07-22 20:53:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38013 states to 38013 states and 59712 transitions. [2022-07-22 20:53:37,776 INFO L78 Accepts]: Start accepts. Automaton has 38013 states and 59712 transitions. Word has length 145 [2022-07-22 20:53:37,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:37,777 INFO L495 AbstractCegarLoop]: Abstraction has 38013 states and 59712 transitions. [2022-07-22 20:53:37,777 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) [2022-07-22 20:53:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 38013 states and 59712 transitions. [2022-07-22 20:53:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:53:37,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:37,792 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] [2022-07-22 20:53:37,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 20:53:37,792 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:37,792 INFO L85 PathProgramCache]: Analyzing trace with hash -156056981, now seen corresponding path program 1 times [2022-07-22 20:53:37,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:37,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810368659] [2022-07-22 20:53:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:37,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:53:37,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:53:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:53:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:53:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:37,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:37,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:37,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810368659] [2022-07-22 20:53:37,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810368659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:37,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:37,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:37,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744593781] [2022-07-22 20:53:37,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:37,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:37,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:37,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:37,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:37,873 INFO L87 Difference]: Start difference. First operand 38013 states and 59712 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) [2022-07-22 20:53:50,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:50,688 INFO L93 Difference]: Finished difference Result 145003 states and 231341 transitions. [2022-07-22 20:53:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:53:50,689 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 [2022-07-22 20:53:50,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:51,027 INFO L225 Difference]: With dead ends: 145003 [2022-07-22 20:53:51,028 INFO L226 Difference]: Without dead ends: 109107 [2022-07-22 20:53:51,136 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 [2022-07-22 20:53:51,136 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 1497 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 2921 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:53:51,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 2707 Invalid, 3039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2921 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 20:53:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109107 states. [2022-07-22 20:53:57,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109107 to 73534. [2022-07-22 20:53:57,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73534 states, 67022 states have (on average 1.5300199934349914) internal successors, (102545), 67306 states have internal predecessors, (102545), 4488 states have call successors, (4488), 1704 states have call predecessors, (4488), 2022 states have return successors, (11407), 4780 states have call predecessors, (11407), 4486 states have call successors, (11407) [2022-07-22 20:53:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73534 states to 73534 states and 118440 transitions. [2022-07-22 20:53:57,761 INFO L78 Accepts]: Start accepts. Automaton has 73534 states and 118440 transitions. Word has length 145 [2022-07-22 20:53:57,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:53:57,761 INFO L495 AbstractCegarLoop]: Abstraction has 73534 states and 118440 transitions. [2022-07-22 20:53:57,761 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) [2022-07-22 20:53:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 73534 states and 118440 transitions. [2022-07-22 20:53:57,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:53:57,792 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:53:57,792 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] [2022-07-22 20:53:57,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 20:53:57,793 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:53:57,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:53:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1571087981, now seen corresponding path program 1 times [2022-07-22 20:53:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:53:57,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83934989] [2022-07-22 20:53:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:53:57,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:53:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:57,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:53:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 20:53:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 20:53:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:53:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 20:53:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:53:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:53:58,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:53:58,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83934989] [2022-07-22 20:53:58,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83934989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:53:58,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:53:58,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:53:58,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708475223] [2022-07-22 20:53:58,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:53:58,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:53:58,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:53:58,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:53:58,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:53:58,075 INFO L87 Difference]: Start difference. First operand 73534 states and 118440 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) [2022-07-22 20:54:22,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:54:22,722 INFO L93 Difference]: Finished difference Result 282410 states and 460019 transitions. [2022-07-22 20:54:22,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:54:22,722 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 [2022-07-22 20:54:22,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:54:23,818 INFO L225 Difference]: With dead ends: 282410 [2022-07-22 20:54:23,818 INFO L226 Difference]: Without dead ends: 210993 [2022-07-22 20:54:23,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:54:23,997 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1675 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 2534 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 2578 SdHoareTripleChecker+Invalid, 2655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:54:23,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 2578 Invalid, 2655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2534 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 20:54:24,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210993 states.