./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.12.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 67128d109acca52d0fda3c2f0434d60ee9cc5cc865496b6446183c0a601e748c --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:28:57,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:28:57,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:28:57,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:28:57,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:28:57,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:28:57,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:28:57,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:28:57,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:28:57,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:28:57,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:28:57,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:28:57,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:28:57,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:28:57,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:28:57,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:28:57,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:28:57,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:28:57,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:28:57,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:28:57,978 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:28:57,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:28:57,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:28:57,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:28:57,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:28:57,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:28:57,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:28:57,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:28:57,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:28:57,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:28:57,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:28:57,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:28:57,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:28:57,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:28:57,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:28:57,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:28:57,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:28:57,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:28:57,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:28:57,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:28:57,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:28:57,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:28:57,994 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:28:58,007 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:28:58,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:28:58,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:28:58,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:28:58,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:28:58,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:28:58,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:28:58,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:28:58,009 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:28:58,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:28:58,010 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:28:58,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:28:58,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:28:58,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:28:58,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:28:58,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:28:58,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:28:58,011 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:28:58,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:28:58,012 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:28:58,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:28:58,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:28:58,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:28:58,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:28:58,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:28:58,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:28:58,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:28:58,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:28:58,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:28:58,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:28:58,014 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:28:58,014 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:28:58,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:28:58,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67128d109acca52d0fda3c2f0434d60ee9cc5cc865496b6446183c0a601e748c [2022-07-12 09:28:58,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:28:58,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:28:58,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:28:58,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:28:58,235 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:28:58,236 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2022-07-12 09:28:58,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71d2c9b58/1faa29a694a94452bec5d77d194997e8/FLAG7187b313e [2022-07-12 09:28:58,718 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:28:58,723 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2022-07-12 09:28:58,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71d2c9b58/1faa29a694a94452bec5d77d194997e8/FLAG7187b313e [2022-07-12 09:28:58,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71d2c9b58/1faa29a694a94452bec5d77d194997e8 [2022-07-12 09:28:58,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:28:58,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:28:58,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:28:58,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:28:58,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:28:58,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:28:58" (1/1) ... [2022-07-12 09:28:58,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9b74b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:58, skipping insertion in model container [2022-07-12 09:28:58,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:28:58" (1/1) ... [2022-07-12 09:28:58,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:28:58,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:28:58,956 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_1.cil-2+token_ring.12.cil-1.c[913,926] [2022-07-12 09:28:58,991 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.12.cil-1.c[5977,5990] [2022-07-12 09:28:59,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:28:59,073 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:28:59,082 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_1.cil-2+token_ring.12.cil-1.c[913,926] [2022-07-12 09:28:59,094 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_1.cil-2+token_ring.12.cil-1.c[5977,5990] [2022-07-12 09:28:59,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:28:59,166 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:28:59,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59 WrapperNode [2022-07-12 09:28:59,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:28:59,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:28:59,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:28:59,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:28:59,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59" (1/1) ... [2022-07-12 09:28:59,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59" (1/1) ... [2022-07-12 09:28:59,243 INFO L137 Inliner]: procedures = 72, calls = 85, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1060 [2022-07-12 09:28:59,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:28:59,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:28:59,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:28:59,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:28:59,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59" (1/1) ... [2022-07-12 09:28:59,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59" (1/1) ... [2022-07-12 09:28:59,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59" (1/1) ... [2022-07-12 09:28:59,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59" (1/1) ... [2022-07-12 09:28:59,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59" (1/1) ... [2022-07-12 09:28:59,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59" (1/1) ... [2022-07-12 09:28:59,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59" (1/1) ... [2022-07-12 09:28:59,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:28:59,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:28:59,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:28:59,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:28:59,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59" (1/1) ... [2022-07-12 09:28:59,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:28:59,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:28:59,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:28:59,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:28:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:28:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:28:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:28:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-12 09:28:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-12 09:28:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:28:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:28:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:28:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:28:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:28:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:28:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:28:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:28:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:28:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:28:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:28:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:28:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:28:59,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:28:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:28:59,382 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:28:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:28:59,382 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-12 09:28:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-12 09:28:59,484 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:28:59,485 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:29:00,101 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:29:00,110 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:29:00,111 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-07-12 09:29:00,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:29:00 BoogieIcfgContainer [2022-07-12 09:29:00,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:29:00,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:29:00,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:29:00,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:29:00,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:28:58" (1/3) ... [2022-07-12 09:29:00,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779ab806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:29:00, skipping insertion in model container [2022-07-12 09:29:00,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:28:59" (2/3) ... [2022-07-12 09:29:00,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@779ab806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:29:00, skipping insertion in model container [2022-07-12 09:29:00,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:29:00" (3/3) ... [2022-07-12 09:29:00,120 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.12.cil-1.c [2022-07-12 09:29:00,130 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:29:00,131 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:29:00,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:29:00,182 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@6c8eb1a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5ac08e08 [2022-07-12 09:29:00,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:29:00,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 462 states, 415 states have (on average 1.653012048192771) internal successors, (686), 422 states have internal predecessors, (686), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-12 09:29:00,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-12 09:29:00,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:00,197 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] [2022-07-12 09:29:00,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:00,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1035123780, now seen corresponding path program 1 times [2022-07-12 09:29:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:00,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216461929] [2022-07-12 09:29:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:00,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:00,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:00,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:00,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 09:29:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:00,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:00,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:00,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216461929] [2022-07-12 09:29:00,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216461929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:00,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:00,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:00,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495934024] [2022-07-12 09:29:00,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:00,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:00,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:00,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:00,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:00,478 INFO L87 Difference]: Start difference. First operand has 462 states, 415 states have (on average 1.653012048192771) internal successors, (686), 422 states have internal predecessors, (686), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:00,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:00,750 INFO L93 Difference]: Finished difference Result 968 states and 1576 transitions. [2022-07-12 09:29:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:00,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-07-12 09:29:00,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:00,772 INFO L225 Difference]: With dead ends: 968 [2022-07-12 09:29:00,772 INFO L226 Difference]: Without dead ends: 521 [2022-07-12 09:29:00,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:00,784 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 957 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:00,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1141 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:29:00,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-07-12 09:29:00,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 515. [2022-07-12 09:29:00,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 464 states have (on average 1.5366379310344827) internal successors, (713), 469 states have internal predecessors, (713), 38 states have call successors, (38), 12 states have call predecessors, (38), 11 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2022-07-12 09:29:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 791 transitions. [2022-07-12 09:29:00,844 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 791 transitions. Word has length 44 [2022-07-12 09:29:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:00,845 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 791 transitions. [2022-07-12 09:29:00,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 791 transitions. [2022-07-12 09:29:00,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 09:29:00,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:00,848 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] [2022-07-12 09:29:00,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:29:00,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:00,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1381906941, now seen corresponding path program 1 times [2022-07-12 09:29:00,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:00,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174132628] [2022-07-12 09:29:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:00,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:00,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 09:29:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:00,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:00,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174132628] [2022-07-12 09:29:00,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174132628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:00,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:00,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:00,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940809513] [2022-07-12 09:29:00,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:00,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:00,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:00,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:00,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:00,916 INFO L87 Difference]: Start difference. First operand 515 states and 791 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:01,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:01,276 INFO L93 Difference]: Finished difference Result 763 states and 1131 transitions. [2022-07-12 09:29:01,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:01,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-12 09:29:01,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:01,280 INFO L225 Difference]: With dead ends: 763 [2022-07-12 09:29:01,280 INFO L226 Difference]: Without dead ends: 639 [2022-07-12 09:29:01,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:01,282 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 369 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:01,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1480 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:29:01,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-12 09:29:01,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 582. [2022-07-12 09:29:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 525 states have (on average 1.5180952380952382) internal successors, (797), 530 states have internal predecessors, (797), 41 states have call successors, (41), 15 states have call predecessors, (41), 14 states have return successors, (43), 37 states have call predecessors, (43), 37 states have call successors, (43) [2022-07-12 09:29:01,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 881 transitions. [2022-07-12 09:29:01,312 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 881 transitions. Word has length 45 [2022-07-12 09:29:01,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:01,313 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 881 transitions. [2022-07-12 09:29:01,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:01,313 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 881 transitions. [2022-07-12 09:29:01,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 09:29:01,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:01,315 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] [2022-07-12 09:29:01,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:29:01,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:01,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:01,316 INFO L85 PathProgramCache]: Analyzing trace with hash 97549480, now seen corresponding path program 1 times [2022-07-12 09:29:01,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:01,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531380294] [2022-07-12 09:29:01,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:01,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:01,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 09:29:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:01,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:01,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:01,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531380294] [2022-07-12 09:29:01,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531380294] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:01,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:01,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:01,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877947080] [2022-07-12 09:29:01,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:01,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:01,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:01,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:01,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:01,370 INFO L87 Difference]: Start difference. First operand 582 states and 881 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:01,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:01,510 INFO L93 Difference]: Finished difference Result 990 states and 1440 transitions. [2022-07-12 09:29:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:01,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-07-12 09:29:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:01,515 INFO L225 Difference]: With dead ends: 990 [2022-07-12 09:29:01,515 INFO L226 Difference]: Without dead ends: 799 [2022-07-12 09:29:01,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:01,520 INFO L413 NwaCegarLoop]: 721 mSDtfsCounter, 966 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:01,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 1143 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:29:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-07-12 09:29:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 747. [2022-07-12 09:29:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 671 states have (on average 1.4709388971684054) internal successors, (987), 679 states have internal predecessors, (987), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (60), 46 states have call predecessors, (60), 48 states have call successors, (60) [2022-07-12 09:29:01,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1099 transitions. [2022-07-12 09:29:01,563 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1099 transitions. Word has length 45 [2022-07-12 09:29:01,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:01,563 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1099 transitions. [2022-07-12 09:29:01,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-12 09:29:01,564 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1099 transitions. [2022-07-12 09:29:01,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-12 09:29:01,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:01,571 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:01,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:29:01,572 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:01,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash -438152140, now seen corresponding path program 1 times [2022-07-12 09:29:01,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:01,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195185621] [2022-07-12 09:29:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:01,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:01,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 09:29:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:01,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 09:29:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:29:01,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:01,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195185621] [2022-07-12 09:29:01,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195185621] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:01,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:01,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:01,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891655045] [2022-07-12 09:29:01,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:01,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:01,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:01,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:01,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:01,671 INFO L87 Difference]: Start difference. First operand 747 states and 1099 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:02,004 INFO L93 Difference]: Finished difference Result 1331 states and 1884 transitions. [2022-07-12 09:29:02,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:02,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-07-12 09:29:02,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:02,009 INFO L225 Difference]: With dead ends: 1331 [2022-07-12 09:29:02,009 INFO L226 Difference]: Without dead ends: 975 [2022-07-12 09:29:02,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:02,015 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 353 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:02,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1535 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:29:02,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-07-12 09:29:02,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 937. [2022-07-12 09:29:02,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 837 states have (on average 1.4181600955794504) internal successors, (1187), 847 states have internal predecessors, (1187), 66 states have call successors, (66), 30 states have call predecessors, (66), 32 states have return successors, (84), 60 states have call predecessors, (84), 62 states have call successors, (84) [2022-07-12 09:29:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1337 transitions. [2022-07-12 09:29:02,042 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1337 transitions. Word has length 62 [2022-07-12 09:29:02,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:02,043 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1337 transitions. [2022-07-12 09:29:02,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:02,043 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1337 transitions. [2022-07-12 09:29:02,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 09:29:02,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:02,045 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:02,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:29:02,045 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:02,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:02,046 INFO L85 PathProgramCache]: Analyzing trace with hash -865322860, now seen corresponding path program 1 times [2022-07-12 09:29:02,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:02,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120310319] [2022-07-12 09:29:02,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:02,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:02,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:02,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 09:29:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:02,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 09:29:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-12 09:29:02,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:02,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120310319] [2022-07-12 09:29:02,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120310319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:02,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:02,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 09:29:02,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677697697] [2022-07-12 09:29:02,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:02,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:02,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 09:29:02,101 INFO L87 Difference]: Start difference. First operand 937 states and 1337 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 09:29:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:02,241 INFO L93 Difference]: Finished difference Result 1590 states and 2190 transitions. [2022-07-12 09:29:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:29:02,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-07-12 09:29:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:02,247 INFO L225 Difference]: With dead ends: 1590 [2022-07-12 09:29:02,247 INFO L226 Difference]: Without dead ends: 1136 [2022-07-12 09:29:02,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:02,249 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 953 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:02,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1140 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:29:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-07-12 09:29:02,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1081. [2022-07-12 09:29:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 965 states have (on average 1.3865284974093264) internal successors, (1338), 977 states have internal predecessors, (1338), 74 states have call successors, (74), 36 states have call predecessors, (74), 40 states have return successors, (98), 68 states have call predecessors, (98), 70 states have call successors, (98) [2022-07-12 09:29:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1510 transitions. [2022-07-12 09:29:02,289 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1510 transitions. Word has length 67 [2022-07-12 09:29:02,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:02,289 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1510 transitions. [2022-07-12 09:29:02,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-12 09:29:02,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1510 transitions. [2022-07-12 09:29:02,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 09:29:02,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:02,291 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:02,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:29:02,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:02,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:02,292 INFO L85 PathProgramCache]: Analyzing trace with hash 679042809, now seen corresponding path program 1 times [2022-07-12 09:29:02,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:02,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547256293] [2022-07-12 09:29:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:02,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:02,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:02,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:02,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:29:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:02,382 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:29:02,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:02,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547256293] [2022-07-12 09:29:02,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547256293] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:02,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820690384] [2022-07-12 09:29:02,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:02,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:02,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:02,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:29:02,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:29:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:02,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 09:29:02,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:02,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:29:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:29:02,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820690384] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:02,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 09:29:02,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-12 09:29:02,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108111218] [2022-07-12 09:29:02,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:02,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 09:29:02,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:02,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 09:29:02,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:29:02,638 INFO L87 Difference]: Start difference. First operand 1081 states and 1510 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:02,759 INFO L93 Difference]: Finished difference Result 1137 states and 1578 transitions. [2022-07-12 09:29:02,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 09:29:02,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-07-12 09:29:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:02,764 INFO L225 Difference]: With dead ends: 1137 [2022-07-12 09:29:02,765 INFO L226 Difference]: Without dead ends: 1134 [2022-07-12 09:29:02,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:29:02,767 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 1279 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:02,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 792 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:29:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1134 states. [2022-07-12 09:29:02,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1134 to 1080. [2022-07-12 09:29:02,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 965 states have (on average 1.3844559585492229) internal successors, (1336), 976 states have internal predecessors, (1336), 73 states have call successors, (73), 36 states have call predecessors, (73), 40 states have return successors, (98), 68 states have call predecessors, (98), 70 states have call successors, (98) [2022-07-12 09:29:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1507 transitions. [2022-07-12 09:29:02,806 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1507 transitions. Word has length 68 [2022-07-12 09:29:02,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:02,808 INFO L495 AbstractCegarLoop]: Abstraction has 1080 states and 1507 transitions. [2022-07-12 09:29:02,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-12 09:29:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1507 transitions. [2022-07-12 09:29:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 09:29:02,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:02,810 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:02,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:03,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-12 09:29:03,022 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:03,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:03,022 INFO L85 PathProgramCache]: Analyzing trace with hash -425930313, now seen corresponding path program 1 times [2022-07-12 09:29:03,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:03,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495992471] [2022-07-12 09:29:03,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:03,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:03,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:03,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 09:29:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 09:29:03,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:03,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495992471] [2022-07-12 09:29:03,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495992471] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:03,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737648753] [2022-07-12 09:29:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:03,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:03,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:03,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:29:03,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:29:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:03,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:29:03,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:03,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:29:03,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:29:03,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737648753] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:29:03,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:29:03,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-12 09:29:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283426892] [2022-07-12 09:29:03,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:29:03,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 09:29:03,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 09:29:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:29:03,433 INFO L87 Difference]: Start difference. First operand 1080 states and 1507 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-12 09:29:04,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:04,855 INFO L93 Difference]: Finished difference Result 2780 states and 3727 transitions. [2022-07-12 09:29:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-12 09:29:04,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-07-12 09:29:04,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:04,862 INFO L225 Difference]: With dead ends: 2780 [2022-07-12 09:29:04,862 INFO L226 Difference]: Without dead ends: 2236 [2022-07-12 09:29:04,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-07-12 09:29:04,865 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 1278 mSDsluCounter, 3520 mSDsCounter, 0 mSdLazyCounter, 2366 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 4350 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:04,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 4350 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2366 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:29:04,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2236 states. [2022-07-12 09:29:04,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2236 to 1469. [2022-07-12 09:29:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1469 states, 1315 states have (on average 1.3460076045627376) internal successors, (1770), 1334 states have internal predecessors, (1770), 93 states have call successors, (93), 50 states have call predecessors, (93), 59 states have return successors, (132), 85 states have call predecessors, (132), 90 states have call successors, (132) [2022-07-12 09:29:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1995 transitions. [2022-07-12 09:29:04,916 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1995 transitions. Word has length 69 [2022-07-12 09:29:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:04,916 INFO L495 AbstractCegarLoop]: Abstraction has 1469 states and 1995 transitions. [2022-07-12 09:29:04,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-07-12 09:29:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1995 transitions. [2022-07-12 09:29:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-12 09:29:04,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:04,919 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 09:29:04,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:05,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-07-12 09:29:05,135 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:05,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:05,136 INFO L85 PathProgramCache]: Analyzing trace with hash -711580662, now seen corresponding path program 1 times [2022-07-12 09:29:05,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:05,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44334373] [2022-07-12 09:29:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:05,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 09:29:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 09:29:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 09:29:05,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:05,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44334373] [2022-07-12 09:29:05,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44334373] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:05,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383072922] [2022-07-12 09:29:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:05,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:05,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:05,214 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:29:05,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:29:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 09:29:05,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-12 09:29:05,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:29:05,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383072922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:05,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:29:05,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-12 09:29:05,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481107261] [2022-07-12 09:29:05,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:05,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:29:05,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:05,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:29:05,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:05,363 INFO L87 Difference]: Start difference. First operand 1469 states and 1995 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-12 09:29:05,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:05,433 INFO L93 Difference]: Finished difference Result 2192 states and 2933 transitions. [2022-07-12 09:29:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:29:05,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-07-12 09:29:05,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:05,438 INFO L225 Difference]: With dead ends: 2192 [2022-07-12 09:29:05,438 INFO L226 Difference]: Without dead ends: 1347 [2022-07-12 09:29:05,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:05,440 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 660 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:05,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [660 Valid, 806 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:29:05,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2022-07-12 09:29:05,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1332. [2022-07-12 09:29:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1194 states have (on average 1.3500837520938023) internal successors, (1612), 1212 states have internal predecessors, (1612), 85 states have call successors, (85), 44 states have call predecessors, (85), 51 states have return successors, (118), 76 states have call predecessors, (118), 82 states have call successors, (118) [2022-07-12 09:29:05,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1815 transitions. [2022-07-12 09:29:05,488 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1815 transitions. Word has length 88 [2022-07-12 09:29:05,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:05,489 INFO L495 AbstractCegarLoop]: Abstraction has 1332 states and 1815 transitions. [2022-07-12 09:29:05,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-12 09:29:05,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1815 transitions. [2022-07-12 09:29:05,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 09:29:05,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:05,491 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-12 09:29:05,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:05,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:05,704 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:05,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash -237141579, now seen corresponding path program 1 times [2022-07-12 09:29:05,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:05,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608043192] [2022-07-12 09:29:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:05,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:29:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 09:29:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 09:29:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 09:29:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:29:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,766 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 09:29:05,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:05,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608043192] [2022-07-12 09:29:05,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608043192] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:29:05,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098550222] [2022-07-12 09:29:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:05,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:05,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:29:05,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:29:05,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 09:29:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:05,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 09:29:05,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:29:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 09:29:05,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:29:05,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098550222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:05,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:29:05,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-12 09:29:05,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938432245] [2022-07-12 09:29:05,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:05,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:29:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:05,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:29:05,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:05,910 INFO L87 Difference]: Start difference. First operand 1332 states and 1815 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 09:29:05,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:05,949 INFO L93 Difference]: Finished difference Result 1711 states and 2283 transitions. [2022-07-12 09:29:05,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:29:05,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-07-12 09:29:05,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:05,951 INFO L225 Difference]: With dead ends: 1711 [2022-07-12 09:29:05,951 INFO L226 Difference]: Without dead ends: 385 [2022-07-12 09:29:05,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:05,955 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 62 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:05,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1420 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:29:05,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-12 09:29:05,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2022-07-12 09:29:05,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 350 states have (on average 1.582857142857143) internal successors, (554), 352 states have internal predecessors, (554), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-12 09:29:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 608 transitions. [2022-07-12 09:29:05,964 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 608 transitions. Word has length 103 [2022-07-12 09:29:05,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:05,964 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 608 transitions. [2022-07-12 09:29:05,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-12 09:29:05,964 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 608 transitions. [2022-07-12 09:29:05,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:05,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:05,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:06,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 09:29:06,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:29:06,172 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:06,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1921252372, now seen corresponding path program 1 times [2022-07-12 09:29:06,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:06,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467444749] [2022-07-12 09:29:06,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:06,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:06,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:06,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:06,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:06,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:06,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:06,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467444749] [2022-07-12 09:29:06,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467444749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:06,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:06,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:29:06,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314778458] [2022-07-12 09:29:06,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:06,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:29:06,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:06,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:29:06,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:06,281 INFO L87 Difference]: Start difference. First operand 385 states and 608 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:07,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:07,320 INFO L93 Difference]: Finished difference Result 905 states and 1452 transitions. [2022-07-12 09:29:07,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:29:07,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:07,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:07,322 INFO L225 Difference]: With dead ends: 905 [2022-07-12 09:29:07,322 INFO L226 Difference]: Without dead ends: 527 [2022-07-12 09:29:07,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:29:07,324 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1044 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:07,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1079 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:29:07,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-07-12 09:29:07,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 385. [2022-07-12 09:29:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 350 states have (on average 1.58) internal successors, (553), 352 states have internal predecessors, (553), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-12 09:29:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 607 transitions. [2022-07-12 09:29:07,340 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 607 transitions. Word has length 179 [2022-07-12 09:29:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:07,340 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 607 transitions. [2022-07-12 09:29:07,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 607 transitions. [2022-07-12 09:29:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:07,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:07,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:07,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:29:07,342 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:07,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:07,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1272659602, now seen corresponding path program 1 times [2022-07-12 09:29:07,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:07,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268601193] [2022-07-12 09:29:07,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:07,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:07,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:07,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:07,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268601193] [2022-07-12 09:29:07,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268601193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:07,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:07,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:29:07,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115859210] [2022-07-12 09:29:07,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:07,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:29:07,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:29:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:29:07,450 INFO L87 Difference]: Start difference. First operand 385 states and 607 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:08,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:08,489 INFO L93 Difference]: Finished difference Result 897 states and 1435 transitions. [2022-07-12 09:29:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 09:29:08,490 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:08,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:08,492 INFO L225 Difference]: With dead ends: 897 [2022-07-12 09:29:08,492 INFO L226 Difference]: Without dead ends: 527 [2022-07-12 09:29:08,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:29:08,494 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 1035 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:08,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1077 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:29:08,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-07-12 09:29:08,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 385. [2022-07-12 09:29:08,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 350 states have (on average 1.5771428571428572) internal successors, (552), 352 states have internal predecessors, (552), 28 states have call successors, (28), 7 states have call predecessors, (28), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-12 09:29:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 606 transitions. [2022-07-12 09:29:08,518 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 606 transitions. Word has length 179 [2022-07-12 09:29:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:08,519 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 606 transitions. [2022-07-12 09:29:08,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 606 transitions. [2022-07-12 09:29:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:08,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:08,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:08,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:29:08,521 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:08,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:08,521 INFO L85 PathProgramCache]: Analyzing trace with hash 774102800, now seen corresponding path program 1 times [2022-07-12 09:29:08,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:08,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52323454] [2022-07-12 09:29:08,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:08,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:08,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:08,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:08,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:08,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:08,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:08,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:08,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52323454] [2022-07-12 09:29:08,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52323454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:08,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:08,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:29:08,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111167366] [2022-07-12 09:29:08,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:08,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:29:08,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:08,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:29:08,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:29:08,648 INFO L87 Difference]: Start difference. First operand 385 states and 606 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:10,785 INFO L93 Difference]: Finished difference Result 1415 states and 2277 transitions. [2022-07-12 09:29:10,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:29:10,786 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:10,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:10,789 INFO L225 Difference]: With dead ends: 1415 [2022-07-12 09:29:10,789 INFO L226 Difference]: Without dead ends: 1051 [2022-07-12 09:29:10,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:29:10,791 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1568 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:10,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 1703 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 09:29:10,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-07-12 09:29:10,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 766. [2022-07-12 09:29:10,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 703 states have (on average 1.5903271692745378) internal successors, (1118), 706 states have internal predecessors, (1118), 49 states have call successors, (49), 13 states have call predecessors, (49), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-12 09:29:10,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1217 transitions. [2022-07-12 09:29:10,828 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1217 transitions. Word has length 179 [2022-07-12 09:29:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:10,828 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 1217 transitions. [2022-07-12 09:29:10,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1217 transitions. [2022-07-12 09:29:10,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:10,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:10,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:10,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:29:10,830 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:10,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:10,830 INFO L85 PathProgramCache]: Analyzing trace with hash -611636980, now seen corresponding path program 1 times [2022-07-12 09:29:10,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:10,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298618299] [2022-07-12 09:29:10,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:10,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:10,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:10,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:10,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:10,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:10,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:10,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298618299] [2022-07-12 09:29:10,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298618299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:10,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:10,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:10,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348178511] [2022-07-12 09:29:10,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:10,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:10,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:10,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:10,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:10,965 INFO L87 Difference]: Start difference. First operand 766 states and 1217 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:13,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:13,770 INFO L93 Difference]: Finished difference Result 2338 states and 3771 transitions. [2022-07-12 09:29:13,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:29:13,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:13,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:13,777 INFO L225 Difference]: With dead ends: 2338 [2022-07-12 09:29:13,777 INFO L226 Difference]: Without dead ends: 1593 [2022-07-12 09:29:13,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:29:13,780 INFO L413 NwaCegarLoop]: 1033 mSDtfsCounter, 1595 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 3144 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 3223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 3144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:13,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 2989 Invalid, 3223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 3144 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 09:29:13,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2022-07-12 09:29:13,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1120. [2022-07-12 09:29:13,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1029 states have (on average 1.5840621963070942) internal successors, (1630), 1033 states have internal predecessors, (1630), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-07-12 09:29:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1773 transitions. [2022-07-12 09:29:13,842 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1773 transitions. Word has length 179 [2022-07-12 09:29:13,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:13,843 INFO L495 AbstractCegarLoop]: Abstraction has 1120 states and 1773 transitions. [2022-07-12 09:29:13,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:13,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1773 transitions. [2022-07-12 09:29:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:13,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:13,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:13,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:29:13,845 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:13,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1913858702, now seen corresponding path program 1 times [2022-07-12 09:29:13,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:13,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785945538] [2022-07-12 09:29:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:13,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:13,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:13,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:13,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:13,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:13,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:13,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:13,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785945538] [2022-07-12 09:29:13,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785945538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:13,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:13,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:13,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672589283] [2022-07-12 09:29:13,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:13,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:13,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:13,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:13,954 INFO L87 Difference]: Start difference. First operand 1120 states and 1773 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:16,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:16,720 INFO L93 Difference]: Finished difference Result 3699 states and 5955 transitions. [2022-07-12 09:29:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:29:16,721 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:16,731 INFO L225 Difference]: With dead ends: 3699 [2022-07-12 09:29:16,731 INFO L226 Difference]: Without dead ends: 2600 [2022-07-12 09:29:16,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:29:16,733 INFO L413 NwaCegarLoop]: 1025 mSDtfsCounter, 1592 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 3146 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 2981 SdHoareTripleChecker+Invalid, 3228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:16,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 2981 Invalid, 3228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 3146 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 09:29:16,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-07-12 09:29:16,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 1829. [2022-07-12 09:29:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1682 states have (on average 1.5784780023781213) internal successors, (2655), 1688 states have internal predecessors, (2655), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-12 09:29:16,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2890 transitions. [2022-07-12 09:29:16,829 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2890 transitions. Word has length 179 [2022-07-12 09:29:16,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:16,829 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2890 transitions. [2022-07-12 09:29:16,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2890 transitions. [2022-07-12 09:29:16,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:16,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:16,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:16,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:29:16,831 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:16,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:16,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1302589644, now seen corresponding path program 1 times [2022-07-12 09:29:16,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:16,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353865153] [2022-07-12 09:29:16,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:16,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:16,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:16,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:16,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:16,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:16,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:16,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:16,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353865153] [2022-07-12 09:29:16,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353865153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:16,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:16,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:16,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196995442] [2022-07-12 09:29:16,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:16,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:16,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:16,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:16,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:16,960 INFO L87 Difference]: Start difference. First operand 1829 states and 2890 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:18,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:18,396 INFO L93 Difference]: Finished difference Result 4396 states and 7063 transitions. [2022-07-12 09:29:18,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:29:18,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:18,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:18,414 INFO L225 Difference]: With dead ends: 4396 [2022-07-12 09:29:18,414 INFO L226 Difference]: Without dead ends: 2588 [2022-07-12 09:29:18,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:29:18,417 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1132 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:18,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 1625 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:29:18,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2022-07-12 09:29:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 1829. [2022-07-12 09:29:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1682 states have (on average 1.5755053507728893) internal successors, (2650), 1688 states have internal predecessors, (2650), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-12 09:29:18,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2885 transitions. [2022-07-12 09:29:18,521 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2885 transitions. Word has length 179 [2022-07-12 09:29:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:18,521 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2885 transitions. [2022-07-12 09:29:18,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:18,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2885 transitions. [2022-07-12 09:29:18,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:18,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:18,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:18,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:29:18,523 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:18,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:18,523 INFO L85 PathProgramCache]: Analyzing trace with hash -102602034, now seen corresponding path program 1 times [2022-07-12 09:29:18,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:18,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351933365] [2022-07-12 09:29:18,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:18,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:18,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:18,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:18,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:18,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:18,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:18,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351933365] [2022-07-12 09:29:18,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351933365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:18,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:18,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:18,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012059621] [2022-07-12 09:29:18,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:18,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:18,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:18,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:18,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:18,629 INFO L87 Difference]: Start difference. First operand 1829 states and 2885 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:20,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:20,057 INFO L93 Difference]: Finished difference Result 4390 states and 7037 transitions. [2022-07-12 09:29:20,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:29:20,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:20,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:20,065 INFO L225 Difference]: With dead ends: 4390 [2022-07-12 09:29:20,065 INFO L226 Difference]: Without dead ends: 2582 [2022-07-12 09:29:20,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:29:20,069 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1132 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:20,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 1619 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:29:20,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2582 states. [2022-07-12 09:29:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2582 to 1829. [2022-07-12 09:29:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1682 states have (on average 1.5725326991676576) internal successors, (2645), 1688 states have internal predecessors, (2645), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-12 09:29:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2880 transitions. [2022-07-12 09:29:20,194 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2880 transitions. Word has length 179 [2022-07-12 09:29:20,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:20,194 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2880 transitions. [2022-07-12 09:29:20,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:20,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2880 transitions. [2022-07-12 09:29:20,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:20,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:20,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:20,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:29:20,196 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:20,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1791731852, now seen corresponding path program 1 times [2022-07-12 09:29:20,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:20,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432201572] [2022-07-12 09:29:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:20,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:20,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:20,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:20,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:20,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:20,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:20,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432201572] [2022-07-12 09:29:20,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432201572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:20,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:20,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:20,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515586572] [2022-07-12 09:29:20,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:20,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:20,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:20,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:20,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:20,320 INFO L87 Difference]: Start difference. First operand 1829 states and 2880 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:21,622 INFO L93 Difference]: Finished difference Result 4378 states and 6999 transitions. [2022-07-12 09:29:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:29:21,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:21,630 INFO L225 Difference]: With dead ends: 4378 [2022-07-12 09:29:21,630 INFO L226 Difference]: Without dead ends: 2570 [2022-07-12 09:29:21,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:29:21,634 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 1374 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:21,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 1370 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:29:21,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2570 states. [2022-07-12 09:29:21,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2570 to 1829. [2022-07-12 09:29:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1682 states have (on average 1.5695600475624256) internal successors, (2640), 1688 states have internal predecessors, (2640), 112 states have call successors, (112), 31 states have call predecessors, (112), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-12 09:29:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2875 transitions. [2022-07-12 09:29:21,752 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2875 transitions. Word has length 179 [2022-07-12 09:29:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:21,753 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2875 transitions. [2022-07-12 09:29:21,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:21,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2875 transitions. [2022-07-12 09:29:21,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:21,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:21,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:21,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:29:21,754 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:21,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:21,755 INFO L85 PathProgramCache]: Analyzing trace with hash 868564426, now seen corresponding path program 1 times [2022-07-12 09:29:21,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:21,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284164197] [2022-07-12 09:29:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:21,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:21,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:21,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:21,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:21,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:21,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284164197] [2022-07-12 09:29:21,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284164197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:21,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:21,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:21,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866919822] [2022-07-12 09:29:21,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:21,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:21,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:21,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:21,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:21,866 INFO L87 Difference]: Start difference. First operand 1829 states and 2875 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:24,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:24,745 INFO L93 Difference]: Finished difference Result 6291 states and 10012 transitions. [2022-07-12 09:29:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:29:24,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:24,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:24,765 INFO L225 Difference]: With dead ends: 6291 [2022-07-12 09:29:24,766 INFO L226 Difference]: Without dead ends: 4483 [2022-07-12 09:29:24,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:29:24,770 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 1567 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 3068 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 3154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:24,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 2953 Invalid, 3154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3068 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:29:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4483 states. [2022-07-12 09:29:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4483 to 3266. [2022-07-12 09:29:25,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3007 states have (on average 1.5643498503491853) internal successors, (4704), 3017 states have internal predecessors, (4704), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-07-12 09:29:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 5129 transitions. [2022-07-12 09:29:25,019 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 5129 transitions. Word has length 179 [2022-07-12 09:29:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:25,020 INFO L495 AbstractCegarLoop]: Abstraction has 3266 states and 5129 transitions. [2022-07-12 09:29:25,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 5129 transitions. [2022-07-12 09:29:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:25,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:25,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:25,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 09:29:25,022 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:25,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:25,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1254426828, now seen corresponding path program 1 times [2022-07-12 09:29:25,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:25,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29881368] [2022-07-12 09:29:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:25,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:25,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:25,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:25,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:25,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29881368] [2022-07-12 09:29:25,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29881368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:25,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:25,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:25,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240956627] [2022-07-12 09:29:25,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:25,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:25,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:25,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:25,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:25,128 INFO L87 Difference]: Start difference. First operand 3266 states and 5129 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:26,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:26,748 INFO L93 Difference]: Finished difference Result 7748 states and 12334 transitions. [2022-07-12 09:29:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:29:26,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:26,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:26,759 INFO L225 Difference]: With dead ends: 7748 [2022-07-12 09:29:26,759 INFO L226 Difference]: Without dead ends: 4503 [2022-07-12 09:29:26,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:29:26,766 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 1128 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:26,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 1606 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:29:26,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4503 states. [2022-07-12 09:29:27,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4503 to 3266. [2022-07-12 09:29:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3266 states, 3007 states have (on average 1.5613568340538744) internal successors, (4695), 3017 states have internal predecessors, (4695), 196 states have call successors, (196), 55 states have call predecessors, (196), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-07-12 09:29:27,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3266 states to 3266 states and 5120 transitions. [2022-07-12 09:29:27,022 INFO L78 Accepts]: Start accepts. Automaton has 3266 states and 5120 transitions. Word has length 179 [2022-07-12 09:29:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:27,022 INFO L495 AbstractCegarLoop]: Abstraction has 3266 states and 5120 transitions. [2022-07-12 09:29:27,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3266 states and 5120 transitions. [2022-07-12 09:29:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:27,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:27,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:27,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:29:27,025 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:27,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:27,025 INFO L85 PathProgramCache]: Analyzing trace with hash 989779338, now seen corresponding path program 1 times [2022-07-12 09:29:27,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:27,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84682278] [2022-07-12 09:29:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:27,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:27,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:27,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:27,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:27,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:27,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:27,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84682278] [2022-07-12 09:29:27,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84682278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:27,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:27,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:27,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499450139] [2022-07-12 09:29:27,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:27,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:27,141 INFO L87 Difference]: Start difference. First operand 3266 states and 5120 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:30,320 INFO L93 Difference]: Finished difference Result 11516 states and 18248 transitions. [2022-07-12 09:29:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:29:30,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:30,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:30,343 INFO L225 Difference]: With dead ends: 11516 [2022-07-12 09:29:30,344 INFO L226 Difference]: Without dead ends: 8271 [2022-07-12 09:29:30,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:29:30,352 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 1559 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 2942 SdHoareTripleChecker+Invalid, 3127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:30,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1578 Valid, 2942 Invalid, 3127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3041 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 09:29:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8271 states. [2022-07-12 09:29:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8271 to 6148. [2022-07-12 09:29:30,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 5665 states have (on average 1.5567519858781995) internal successors, (8819), 5683 states have internal predecessors, (8819), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-12 09:29:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 9642 transitions. [2022-07-12 09:29:30,871 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 9642 transitions. Word has length 179 [2022-07-12 09:29:30,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:30,871 INFO L495 AbstractCegarLoop]: Abstraction has 6148 states and 9642 transitions. [2022-07-12 09:29:30,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:30,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 9642 transitions. [2022-07-12 09:29:30,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:30,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:30,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:30,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:29:30,874 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:30,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1374062324, now seen corresponding path program 1 times [2022-07-12 09:29:30,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:30,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648197999] [2022-07-12 09:29:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:30,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:30,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:31,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:31,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648197999] [2022-07-12 09:29:31,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648197999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:31,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:31,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:31,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901770984] [2022-07-12 09:29:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:31,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:31,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:31,009 INFO L87 Difference]: Start difference. First operand 6148 states and 9642 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:32,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:32,780 INFO L93 Difference]: Finished difference Result 14476 states and 22997 transitions. [2022-07-12 09:29:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:29:32,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:32,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:32,800 INFO L225 Difference]: With dead ends: 14476 [2022-07-12 09:29:32,800 INFO L226 Difference]: Without dead ends: 8349 [2022-07-12 09:29:32,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:29:32,814 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1294 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:32,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1314 Valid, 1396 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:29:32,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8349 states. [2022-07-12 09:29:33,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8349 to 6148. [2022-07-12 09:29:33,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 5665 states have (on average 1.5537511032656663) internal successors, (8802), 5683 states have internal predecessors, (8802), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-12 09:29:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 9625 transitions. [2022-07-12 09:29:33,368 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 9625 transitions. Word has length 179 [2022-07-12 09:29:33,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:33,368 INFO L495 AbstractCegarLoop]: Abstraction has 6148 states and 9625 transitions. [2022-07-12 09:29:33,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:33,368 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 9625 transitions. [2022-07-12 09:29:33,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:33,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:33,371 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:33,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:29:33,372 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:33,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:33,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1597726026, now seen corresponding path program 1 times [2022-07-12 09:29:33,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:33,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118215916] [2022-07-12 09:29:33,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:33,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:33,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:33,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:33,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:33,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:33,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:33,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118215916] [2022-07-12 09:29:33,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118215916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:33,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:33,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:33,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038830458] [2022-07-12 09:29:33,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:33,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:33,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:33,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:33,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:33,490 INFO L87 Difference]: Start difference. First operand 6148 states and 9625 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:35,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:35,376 INFO L93 Difference]: Finished difference Result 14458 states and 22910 transitions. [2022-07-12 09:29:35,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:29:35,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:35,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:35,395 INFO L225 Difference]: With dead ends: 14458 [2022-07-12 09:29:35,395 INFO L226 Difference]: Without dead ends: 8331 [2022-07-12 09:29:35,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:29:35,409 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1292 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:35,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 1392 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:29:35,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8331 states. [2022-07-12 09:29:35,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8331 to 6148. [2022-07-12 09:29:35,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6148 states, 5665 states have (on average 1.5507502206531332) internal successors, (8785), 5683 states have internal predecessors, (8785), 364 states have call successors, (364), 103 states have call predecessors, (364), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-12 09:29:35,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6148 states to 6148 states and 9608 transitions. [2022-07-12 09:29:35,944 INFO L78 Accepts]: Start accepts. Automaton has 6148 states and 9608 transitions. Word has length 179 [2022-07-12 09:29:35,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:35,944 INFO L495 AbstractCegarLoop]: Abstraction has 6148 states and 9608 transitions. [2022-07-12 09:29:35,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:35,944 INFO L276 IsEmpty]: Start isEmpty. Operand 6148 states and 9608 transitions. [2022-07-12 09:29:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:35,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:35,948 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:35,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:29:35,949 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:35,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:35,949 INFO L85 PathProgramCache]: Analyzing trace with hash -800261812, now seen corresponding path program 1 times [2022-07-12 09:29:35,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:35,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132699812] [2022-07-12 09:29:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:35,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:36,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:36,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:36,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:36,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:36,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:36,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:36,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132699812] [2022-07-12 09:29:36,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132699812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:36,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:36,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:36,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918145312] [2022-07-12 09:29:36,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:36,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:36,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:36,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:36,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:36,101 INFO L87 Difference]: Start difference. First operand 6148 states and 9608 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:40,347 INFO L93 Difference]: Finished difference Result 21944 states and 34608 transitions. [2022-07-12 09:29:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:29:40,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:40,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:40,384 INFO L225 Difference]: With dead ends: 21944 [2022-07-12 09:29:40,385 INFO L226 Difference]: Without dead ends: 15817 [2022-07-12 09:29:40,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:29:40,398 INFO L413 NwaCegarLoop]: 967 mSDtfsCounter, 1547 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 2992 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:40,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 2923 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2992 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 09:29:40,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15817 states. [2022-07-12 09:29:41,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15817 to 11959. [2022-07-12 09:29:41,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11959 states, 11028 states have (on average 1.5465179542981502) internal successors, (17055), 11062 states have internal predecessors, (17055), 700 states have call successors, (700), 199 states have call predecessors, (700), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-12 09:29:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11959 states to 11959 states and 18728 transitions. [2022-07-12 09:29:41,544 INFO L78 Accepts]: Start accepts. Automaton has 11959 states and 18728 transitions. Word has length 179 [2022-07-12 09:29:41,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:41,545 INFO L495 AbstractCegarLoop]: Abstraction has 11959 states and 18728 transitions. [2022-07-12 09:29:41,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:41,545 INFO L276 IsEmpty]: Start isEmpty. Operand 11959 states and 18728 transitions. [2022-07-12 09:29:41,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:41,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:41,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:41,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:29:41,551 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:41,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:41,552 INFO L85 PathProgramCache]: Analyzing trace with hash -461974262, now seen corresponding path program 1 times [2022-07-12 09:29:41,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:41,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912085536] [2022-07-12 09:29:41,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:41,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:41,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:41,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912085536] [2022-07-12 09:29:41,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912085536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:41,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:41,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:41,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212469679] [2022-07-12 09:29:41,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:41,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:41,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:41,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:41,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:41,664 INFO L87 Difference]: Start difference. First operand 11959 states and 18728 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:49,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:29:49,477 INFO L93 Difference]: Finished difference Result 48119 states and 75904 transitions. [2022-07-12 09:29:49,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:29:49,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:29:49,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:29:49,575 INFO L225 Difference]: With dead ends: 48119 [2022-07-12 09:29:49,575 INFO L226 Difference]: Without dead ends: 36181 [2022-07-12 09:29:49,605 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 [2022-07-12 09:29:49,606 INFO L413 NwaCegarLoop]: 923 mSDtfsCounter, 1745 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 3235 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:29:49,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1763 Valid, 2237 Invalid, 3362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3235 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:29:49,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36181 states. [2022-07-12 09:29:51,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36181 to 23225. [2022-07-12 09:29:51,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23225 states, 21430 states have (on average 1.5426504899673354) internal successors, (33059), 21496 states have internal predecessors, (33059), 1340 states have call successors, (1340), 391 states have call predecessors, (1340), 454 states have return successors, (2131), 1401 states have call predecessors, (2131), 1338 states have call successors, (2131) [2022-07-12 09:29:52,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23225 states to 23225 states and 36530 transitions. [2022-07-12 09:29:52,003 INFO L78 Accepts]: Start accepts. Automaton has 23225 states and 36530 transitions. Word has length 179 [2022-07-12 09:29:52,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:29:52,004 INFO L495 AbstractCegarLoop]: Abstraction has 23225 states and 36530 transitions. [2022-07-12 09:29:52,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:29:52,004 INFO L276 IsEmpty]: Start isEmpty. Operand 23225 states and 36530 transitions. [2022-07-12 09:29:52,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:29:52,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:29:52,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:29:52,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:29:52,014 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:29:52,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:29:52,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1002403768, now seen corresponding path program 1 times [2022-07-12 09:29:52,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:29:52,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408049023] [2022-07-12 09:29:52,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:29:52,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:29:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:29:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:52,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:29:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:52,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:29:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:52,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:29:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:29:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:29:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:29:52,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:29:52,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408049023] [2022-07-12 09:29:52,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408049023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:29:52,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:29:52,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:29:52,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853086749] [2022-07-12 09:29:52,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:29:52,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:29:52,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:29:52,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:29:52,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:29:52,117 INFO L87 Difference]: Start difference. First operand 23225 states and 36530 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:05,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:05,348 INFO L93 Difference]: Finished difference Result 93175 states and 147608 transitions. [2022-07-12 09:30:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:30:05,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:30:05,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:05,565 INFO L225 Difference]: With dead ends: 93175 [2022-07-12 09:30:05,565 INFO L226 Difference]: Without dead ends: 69971 [2022-07-12 09:30:05,626 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 [2022-07-12 09:30:05,626 INFO L413 NwaCegarLoop]: 951 mSDtfsCounter, 1949 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:05,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 2899 Invalid, 3053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 09:30:05,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69971 states. [2022-07-12 09:30:10,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69971 to 46042. [2022-07-12 09:30:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46042 states, 42551 states have (on average 1.54330098000047) internal successors, (65669), 42681 states have internal predecessors, (65669), 2588 states have call successors, (2588), 775 states have call predecessors, (2588), 902 states have return successors, (4901), 2713 states have call predecessors, (4901), 2586 states have call successors, (4901) [2022-07-12 09:30:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46042 states to 46042 states and 73158 transitions. [2022-07-12 09:30:10,481 INFO L78 Accepts]: Start accepts. Automaton has 46042 states and 73158 transitions. Word has length 179 [2022-07-12 09:30:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:10,482 INFO L495 AbstractCegarLoop]: Abstraction has 46042 states and 73158 transitions. [2022-07-12 09:30:10,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 46042 states and 73158 transitions. [2022-07-12 09:30:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:10,498 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:10,498 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:10,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:30:10,498 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:10,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:10,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1158384310, now seen corresponding path program 1 times [2022-07-12 09:30:10,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:10,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376300314] [2022-07-12 09:30:10,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:10,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:10,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:10,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:10,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:10,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376300314] [2022-07-12 09:30:10,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376300314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:10,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:10,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:10,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034614779] [2022-07-12 09:30:10,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:10,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:10,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:10,604 INFO L87 Difference]: Start difference. First operand 46042 states and 73158 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:34,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:30:34,734 INFO L93 Difference]: Finished difference Result 182998 states and 292734 transitions. [2022-07-12 09:30:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:30:34,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:30:34,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:30:35,166 INFO L225 Difference]: With dead ends: 182998 [2022-07-12 09:30:35,166 INFO L226 Difference]: Without dead ends: 136977 [2022-07-12 09:30:35,300 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 [2022-07-12 09:30:35,301 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 1633 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 3430 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 3050 SdHoareTripleChecker+Invalid, 3521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:30:35,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 3050 Invalid, 3521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3430 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:30:35,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136977 states. [2022-07-12 09:30:45,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136977 to 91611. [2022-07-12 09:30:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91611 states, 84792 states have (on average 1.544379186715728) internal successors, (130951), 85050 states have internal predecessors, (130951), 5020 states have call successors, (5020), 1543 states have call predecessors, (5020), 1798 states have return successors, (11835), 5273 states have call predecessors, (11835), 5018 states have call successors, (11835) [2022-07-12 09:30:46,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91611 states to 91611 states and 147806 transitions. [2022-07-12 09:30:46,127 INFO L78 Accepts]: Start accepts. Automaton has 91611 states and 147806 transitions. Word has length 179 [2022-07-12 09:30:46,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:30:46,128 INFO L495 AbstractCegarLoop]: Abstraction has 91611 states and 147806 transitions. [2022-07-12 09:30:46,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:30:46,128 INFO L276 IsEmpty]: Start isEmpty. Operand 91611 states and 147806 transitions. [2022-07-12 09:30:46,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:30:46,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:30:46,157 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:30:46,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:30:46,157 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:30:46,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:30:46,157 INFO L85 PathProgramCache]: Analyzing trace with hash -747773944, now seen corresponding path program 1 times [2022-07-12 09:30:46,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:30:46,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118841647] [2022-07-12 09:30:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:30:46,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:30:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:30:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:30:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:30:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:30:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:30:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:30:46,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:30:46,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:30:46,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118841647] [2022-07-12 09:30:46,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118841647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:30:46,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:30:46,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:30:46,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717078282] [2022-07-12 09:30:46,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:30:46,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:30:46,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:30:46,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:30:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:30:46,266 INFO L87 Difference]: Start difference. First operand 91611 states and 147806 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:31:32,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:31:32,427 INFO L93 Difference]: Finished difference Result 360277 states and 585044 transitions. [2022-07-12 09:31:32,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:31:32,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:31:32,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:31:33,433 INFO L225 Difference]: With dead ends: 360277 [2022-07-12 09:31:33,433 INFO L226 Difference]: Without dead ends: 268687 [2022-07-12 09:31:33,660 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 [2022-07-12 09:31:33,660 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 1869 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 2943 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 2889 SdHoareTripleChecker+Invalid, 3037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:31:33,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 2889 Invalid, 3037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 2943 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:31:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268687 states.