./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.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 71189e3cc465fa9296e61b90c4b4428a637cf1ec8723797967b75b70226f0c15 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:02:52,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:02:52,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:02:52,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:02:52,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:02:52,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:02:52,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:02:52,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:02:52,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:02:52,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:02:52,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:02:52,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:02:52,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:02:52,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:02:52,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:02:52,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:02:52,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:02:52,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:02:52,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:02:52,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:02:52,998 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:02:52,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:02:52,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:02:53,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:02:53,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:02:53,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:02:53,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:02:53,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:02:53,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:02:53,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:02:53,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:02:53,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:02:53,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:02:53,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:02:53,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:02:53,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:02:53,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:02:53,015 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:02:53,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:02:53,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:02:53,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:02:53,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:02:53,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:02:53,041 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:02:53,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:02:53,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:02:53,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:02:53,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:02:53,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:02:53,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:02:53,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:02:53,044 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:02:53,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:02:53,045 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:02:53,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:02:53,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:02:53,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:02:53,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:02:53,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:02:53,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:02:53,046 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:02:53,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:02:53,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:02:53,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:02:53,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:02:53,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:02:53,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:02:53,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:02:53,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:02:53,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:02:53,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:02:53,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:02:53,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:02:53,048 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:02:53,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:02:53,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:02:53,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71189e3cc465fa9296e61b90c4b4428a637cf1ec8723797967b75b70226f0c15 [2022-07-21 08:02:53,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:02:53,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:02:53,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:02:53,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:02:53,338 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:02:53,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2022-07-21 08:02:53,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51a0efb9e/ae03d293b9454c10b5b6f731d15eac9b/FLAG6b559149b [2022-07-21 08:02:53,782 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:02:53,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2022-07-21 08:02:53,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51a0efb9e/ae03d293b9454c10b5b6f731d15eac9b/FLAG6b559149b [2022-07-21 08:02:53,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51a0efb9e/ae03d293b9454c10b5b6f731d15eac9b [2022-07-21 08:02:53,819 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:02:53,820 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:02:53,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:02:53,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:02:53,824 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:02:53,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:02:53" (1/1) ... [2022-07-21 08:02:53,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5892ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:53, skipping insertion in model container [2022-07-21 08:02:53,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:02:53" (1/1) ... [2022-07-21 08:02:53,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:02:53,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:02:53,964 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.08.cil-1.c[913,926] [2022-07-21 08:02:53,996 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.08.cil-1.c[5977,5990] [2022-07-21 08:02:54,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:02:54,101 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:02:54,119 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.08.cil-1.c[913,926] [2022-07-21 08:02:54,129 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.08.cil-1.c[5977,5990] [2022-07-21 08:02:54,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:02:54,196 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:02:54,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54 WrapperNode [2022-07-21 08:02:54,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:02:54,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:02:54,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:02:54,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:02:54,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54" (1/1) ... [2022-07-21 08:02:54,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54" (1/1) ... [2022-07-21 08:02:54,237 INFO L137 Inliner]: procedures = 64, calls = 72, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 823 [2022-07-21 08:02:54,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:02:54,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:02:54,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:02:54,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:02:54,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54" (1/1) ... [2022-07-21 08:02:54,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54" (1/1) ... [2022-07-21 08:02:54,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54" (1/1) ... [2022-07-21 08:02:54,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54" (1/1) ... [2022-07-21 08:02:54,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54" (1/1) ... [2022-07-21 08:02:54,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54" (1/1) ... [2022-07-21 08:02:54,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54" (1/1) ... [2022-07-21 08:02:54,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:02:54,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:02:54,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:02:54,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:02:54,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54" (1/1) ... [2022-07-21 08:02:54,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:02:54,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:02:54,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:02:54,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:02:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:02:54,355 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:02:54,356 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:02:54,356 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-07-21 08:02:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-07-21 08:02:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:02:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:02:54,357 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:02:54,357 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:02:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:02:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:02:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:02:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:02:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:02:54,358 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:02:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:02:54,358 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:02:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:02:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:02:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:02:54,359 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:02:54,359 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:02:54,473 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:02:54,474 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:02:55,040 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:02:55,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:02:55,053 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-21 08:02:55,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:02:55 BoogieIcfgContainer [2022-07-21 08:02:55,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:02:55,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:02:55,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:02:55,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:02:55,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:02:53" (1/3) ... [2022-07-21 08:02:55,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254fb0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:02:55, skipping insertion in model container [2022-07-21 08:02:55,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:02:54" (2/3) ... [2022-07-21 08:02:55,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@254fb0ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:02:55, skipping insertion in model container [2022-07-21 08:02:55,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:02:55" (3/3) ... [2022-07-21 08:02:55,061 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.08.cil-1.c [2022-07-21 08:02:55,071 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:02:55,071 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:02:55,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:02:55,125 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@5ebf8c43, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1a39290e [2022-07-21 08:02:55,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:02:55,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 319 states have internal predecessors, (512), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-21 08:02:55,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 08:02:55,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:02:55,139 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] [2022-07-21 08:02:55,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:02:55,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:02:55,145 INFO L85 PathProgramCache]: Analyzing trace with hash -728515796, now seen corresponding path program 1 times [2022-07-21 08:02:55,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:02:55,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958440478] [2022-07-21 08:02:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:55,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:02:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:55,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:02:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 08:02:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:02:55,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:02:55,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958440478] [2022-07-21 08:02:55,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958440478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:02:55,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:02:55,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:02:55,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116073452] [2022-07-21 08:02:55,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:02:55,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:02:55,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:02:55,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:02:55,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:02:55,402 INFO L87 Difference]: Start difference. First operand has 354 states, 314 states have (on average 1.6305732484076434) internal successors, (512), 319 states have internal predecessors, (512), 28 states have call successors, (28), 9 states have call predecessors, (28), 9 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 08:02:55,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:02:55,796 INFO L93 Difference]: Finished difference Result 695 states and 1111 transitions. [2022-07-21 08:02:55,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:02:55,798 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), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-07-21 08:02:55,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:02:55,807 INFO L225 Difference]: With dead ends: 695 [2022-07-21 08:02:55,807 INFO L226 Difference]: Without dead ends: 353 [2022-07-21 08:02:55,811 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 [2022-07-21 08:02:55,813 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 306 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:02:55,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1023 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:02:55,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-07-21 08:02:55,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 344. [2022-07-21 08:02:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 306 states have (on average 1.5326797385620916) internal successors, (469), 309 states have internal predecessors, (469), 28 states have call successors, (28), 9 states have call predecessors, (28), 8 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-21 08:02:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 523 transitions. [2022-07-21 08:02:55,855 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 523 transitions. Word has length 44 [2022-07-21 08:02:55,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:02:55,855 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 523 transitions. [2022-07-21 08:02:55,856 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), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 08:02:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 523 transitions. [2022-07-21 08:02:55,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 08:02:55,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:02:55,858 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] [2022-07-21 08:02:55,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:02:55,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:02:55,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:02:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1116851370, now seen corresponding path program 1 times [2022-07-21 08:02:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:02:55,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35598112] [2022-07-21 08:02:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:55,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:02:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:55,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:02:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 08:02:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:02:55,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:02:55,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35598112] [2022-07-21 08:02:55,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35598112] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:02:55,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:02:55,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:02:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522317822] [2022-07-21 08:02:55,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:02:55,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:02:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:02:55,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:02:55,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:02:55,910 INFO L87 Difference]: Start difference. First operand 344 states and 523 transitions. 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) [2022-07-21 08:02:56,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:02:56,049 INFO L93 Difference]: Finished difference Result 476 states and 708 transitions. [2022-07-21 08:02:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:02:56,050 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 [2022-07-21 08:02:56,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:02:56,052 INFO L225 Difference]: With dead ends: 476 [2022-07-21 08:02:56,052 INFO L226 Difference]: Without dead ends: 414 [2022-07-21 08:02:56,053 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 [2022-07-21 08:02:56,054 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 695 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:02:56,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 861 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:02:56,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-07-21 08:02:56,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 408. [2022-07-21 08:02:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 363 states have (on average 1.5013774104683195) internal successors, (545), 367 states have internal predecessors, (545), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (36), 30 states have call predecessors, (36), 30 states have call successors, (36) [2022-07-21 08:02:56,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 613 transitions. [2022-07-21 08:02:56,074 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 613 transitions. Word has length 44 [2022-07-21 08:02:56,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:02:56,074 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 613 transitions. [2022-07-21 08:02:56,074 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) [2022-07-21 08:02:56,075 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 613 transitions. [2022-07-21 08:02:56,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 08:02:56,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:02:56,076 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] [2022-07-21 08:02:56,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:02:56,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:02:56,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:02:56,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1978263529, now seen corresponding path program 1 times [2022-07-21 08:02:56,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:02:56,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878044903] [2022-07-21 08:02:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:56,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:02:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:56,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:02:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 08:02:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:56,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:02:56,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:02:56,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878044903] [2022-07-21 08:02:56,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878044903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:02:56,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:02:56,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:02:56,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755756172] [2022-07-21 08:02:56,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:02:56,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:02:56,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:02:56,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:02:56,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:02:56,122 INFO L87 Difference]: Start difference. First operand 408 states and 613 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) [2022-07-21 08:02:56,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:02:56,375 INFO L93 Difference]: Finished difference Result 656 states and 953 transitions. [2022-07-21 08:02:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:02:56,375 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 [2022-07-21 08:02:56,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:02:56,378 INFO L225 Difference]: With dead ends: 656 [2022-07-21 08:02:56,379 INFO L226 Difference]: Without dead ends: 532 [2022-07-21 08:02:56,379 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 [2022-07-21 08:02:56,380 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 287 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:02:56,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1127 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:02:56,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-07-21 08:02:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 475. [2022-07-21 08:02:56,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 424 states have (on average 1.4834905660377358) internal successors, (629), 428 states have internal predecessors, (629), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (39), 33 states have call predecessors, (39), 33 states have call successors, (39) [2022-07-21 08:02:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 703 transitions. [2022-07-21 08:02:56,398 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 703 transitions. Word has length 45 [2022-07-21 08:02:56,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:02:56,398 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 703 transitions. [2022-07-21 08:02:56,398 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) [2022-07-21 08:02:56,398 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 703 transitions. [2022-07-21 08:02:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 08:02:56,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:02:56,400 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] [2022-07-21 08:02:56,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:02:56,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:02:56,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:02:56,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1032346306, now seen corresponding path program 1 times [2022-07-21 08:02:56,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:02:56,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112227260] [2022-07-21 08:02:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:56,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:02:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:56,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:02:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 08:02:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:02:56,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:02:56,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112227260] [2022-07-21 08:02:56,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112227260] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:02:56,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:02:56,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:02:56,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653964426] [2022-07-21 08:02:56,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:02:56,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:02:56,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:02:56,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:02:56,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:02:56,450 INFO L87 Difference]: Start difference. First operand 475 states and 703 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) [2022-07-21 08:02:56,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:02:56,578 INFO L93 Difference]: Finished difference Result 883 states and 1262 transitions. [2022-07-21 08:02:56,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:02:56,578 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 [2022-07-21 08:02:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:02:56,582 INFO L225 Difference]: With dead ends: 883 [2022-07-21 08:02:56,582 INFO L226 Difference]: Without dead ends: 692 [2022-07-21 08:02:56,583 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 [2022-07-21 08:02:56,589 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 712 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:02:56,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 881 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:02:56,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-07-21 08:02:56,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 640. [2022-07-21 08:02:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 570 states have (on average 1.436842105263158) internal successors, (819), 577 states have internal predecessors, (819), 46 states have call successors, (46), 21 states have call predecessors, (46), 22 states have return successors, (56), 42 states have call predecessors, (56), 44 states have call successors, (56) [2022-07-21 08:02:56,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 921 transitions. [2022-07-21 08:02:56,621 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 921 transitions. Word has length 45 [2022-07-21 08:02:56,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:02:56,621 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 921 transitions. [2022-07-21 08:02:56,622 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) [2022-07-21 08:02:56,622 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 921 transitions. [2022-07-21 08:02:56,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 08:02:56,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:02:56,625 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] [2022-07-21 08:02:56,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:02:56,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:02:56,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:02:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash 875979578, now seen corresponding path program 1 times [2022-07-21 08:02:56,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:02:56,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866968992] [2022-07-21 08:02:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:56,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:02:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:02:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 08:02:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:56,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 08:02:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:02:56,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:02:56,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866968992] [2022-07-21 08:02:56,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866968992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:02:56,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:02:56,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:02:56,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238558067] [2022-07-21 08:02:56,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:02:56,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:02:56,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:02:56,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:02:56,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:02:56,692 INFO L87 Difference]: Start difference. First operand 640 states and 921 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) [2022-07-21 08:02:56,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:02:56,934 INFO L93 Difference]: Finished difference Result 984 states and 1382 transitions. [2022-07-21 08:02:56,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:02:56,935 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 [2022-07-21 08:02:56,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:02:56,939 INFO L225 Difference]: With dead ends: 984 [2022-07-21 08:02:56,940 INFO L226 Difference]: Without dead ends: 747 [2022-07-21 08:02:56,940 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 [2022-07-21 08:02:56,942 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 271 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:02:56,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1180 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:02:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-07-21 08:02:56,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 709. [2022-07-21 08:02:56,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 630 states have (on average 1.4111111111111112) internal successors, (889), 638 states have internal predecessors, (889), 51 states have call successors, (51), 24 states have call predecessors, (51), 26 states have return successors, (65), 47 states have call predecessors, (65), 49 states have call successors, (65) [2022-07-21 08:02:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1005 transitions. [2022-07-21 08:02:56,969 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1005 transitions. Word has length 62 [2022-07-21 08:02:56,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:02:56,969 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 1005 transitions. [2022-07-21 08:02:56,969 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) [2022-07-21 08:02:56,969 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1005 transitions. [2022-07-21 08:02:56,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 08:02:56,971 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:02:56,971 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] [2022-07-21 08:02:56,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:02:56,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:02:56,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:02:56,972 INFO L85 PathProgramCache]: Analyzing trace with hash 263296175, now seen corresponding path program 1 times [2022-07-21 08:02:56,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:02:56,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658690797] [2022-07-21 08:02:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:56,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:02:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:02:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:02:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-21 08:02:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 08:02:57,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:02:57,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658690797] [2022-07-21 08:02:57,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658690797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:02:57,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:02:57,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:02:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683367625] [2022-07-21 08:02:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:02:57,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:02:57,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:02:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:02:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:02:57,052 INFO L87 Difference]: Start difference. First operand 709 states and 1005 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) [2022-07-21 08:02:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:02:57,166 INFO L93 Difference]: Finished difference Result 1260 states and 1727 transitions. [2022-07-21 08:02:57,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:02:57,167 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 [2022-07-21 08:02:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:02:57,171 INFO L225 Difference]: With dead ends: 1260 [2022-07-21 08:02:57,171 INFO L226 Difference]: Without dead ends: 882 [2022-07-21 08:02:57,172 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 [2022-07-21 08:02:57,173 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 699 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:02:57,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 878 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:02:57,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-07-21 08:02:57,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 827. [2022-07-21 08:02:57,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 735 states have (on average 1.380952380952381) internal successors, (1015), 744 states have internal predecessors, (1015), 58 states have call successors, (58), 29 states have call predecessors, (58), 32 states have return successors, (76), 54 states have call predecessors, (76), 56 states have call successors, (76) [2022-07-21 08:02:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1149 transitions. [2022-07-21 08:02:57,205 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1149 transitions. Word has length 67 [2022-07-21 08:02:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:02:57,206 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1149 transitions. [2022-07-21 08:02:57,206 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) [2022-07-21 08:02:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1149 transitions. [2022-07-21 08:02:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:02:57,208 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:02:57,208 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] [2022-07-21 08:02:57,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:02:57,208 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:02:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:02:57,209 INFO L85 PathProgramCache]: Analyzing trace with hash -160972064, now seen corresponding path program 1 times [2022-07-21 08:02:57,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:02:57,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502846180] [2022-07-21 08:02:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:57,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:02:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:02:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:02:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:02:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:02:57,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:02:57,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502846180] [2022-07-21 08:02:57,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502846180] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:02:57,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628738877] [2022-07-21 08:02:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:57,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:02:57,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:02:57,318 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:02:57,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:02:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 08:02:57,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:02:57,529 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:02:57,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:02:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:02:57,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628738877] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 08:02:57,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 08:02:57,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-07-21 08:02:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787981041] [2022-07-21 08:02:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:02:57,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:02:57,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:02:57,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:02:57,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:02:57,558 INFO L87 Difference]: Start difference. First operand 827 states and 1149 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) [2022-07-21 08:02:57,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:02:57,656 INFO L93 Difference]: Finished difference Result 882 states and 1216 transitions. [2022-07-21 08:02:57,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:02:57,657 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 [2022-07-21 08:02:57,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:02:57,661 INFO L225 Difference]: With dead ends: 882 [2022-07-21 08:02:57,661 INFO L226 Difference]: Without dead ends: 879 [2022-07-21 08:02:57,662 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 [2022-07-21 08:02:57,663 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 945 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:02:57,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 615 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:02:57,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-07-21 08:02:57,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 826. [2022-07-21 08:02:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 735 states have (on average 1.3782312925170068) internal successors, (1013), 743 states have internal predecessors, (1013), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (76), 54 states have call predecessors, (76), 56 states have call successors, (76) [2022-07-21 08:02:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1146 transitions. [2022-07-21 08:02:57,695 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1146 transitions. Word has length 68 [2022-07-21 08:02:57,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:02:57,695 INFO L495 AbstractCegarLoop]: Abstraction has 826 states and 1146 transitions. [2022-07-21 08:02:57,696 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) [2022-07-21 08:02:57,696 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1146 transitions. [2022-07-21 08:02:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-21 08:02:57,697 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:02:57,697 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] [2022-07-21 08:02:57,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:02:57,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:02:57,912 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:02:57,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:02:57,912 INFO L85 PathProgramCache]: Analyzing trace with hash -696266350, now seen corresponding path program 1 times [2022-07-21 08:02:57,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:02:57,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648963872] [2022-07-21 08:02:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:57,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:02:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:02:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:02:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 08:02:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-21 08:02:57,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:02:57,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648963872] [2022-07-21 08:02:57,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648963872] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:02:57,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90314724] [2022-07-21 08:02:57,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:57,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:02:57,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:02:57,980 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:02:57,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:02:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:58,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 08:02:58,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:02:58,244 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:02:58,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:02:58,309 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:02:58,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90314724] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:02:58,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:02:58,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-07-21 08:02:58,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151429741] [2022-07-21 08:02:58,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:02:58,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:02:58,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:02:58,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:02:58,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:02:58,311 INFO L87 Difference]: Start difference. First operand 826 states and 1146 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) [2022-07-21 08:02:59,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:02:59,374 INFO L93 Difference]: Finished difference Result 2355 states and 3143 transitions. [2022-07-21 08:02:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-21 08:02:59,374 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 [2022-07-21 08:02:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:02:59,380 INFO L225 Difference]: With dead ends: 2355 [2022-07-21 08:02:59,380 INFO L226 Difference]: Without dead ends: 1911 [2022-07-21 08:02:59,382 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 [2022-07-21 08:02:59,382 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1066 mSDsluCounter, 2554 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:02:59,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 3207 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:02:59,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2022-07-21 08:02:59,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1200. [2022-07-21 08:02:59,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 1073 states have (on average 1.3383038210624418) internal successors, (1436), 1087 states have internal predecessors, (1436), 76 states have call successors, (76), 42 states have call predecessors, (76), 49 states have return successors, (107), 71 states have call predecessors, (107), 75 states have call successors, (107) [2022-07-21 08:02:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1619 transitions. [2022-07-21 08:02:59,445 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1619 transitions. Word has length 69 [2022-07-21 08:02:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:02:59,445 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 1619 transitions. [2022-07-21 08:02:59,446 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) [2022-07-21 08:02:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1619 transitions. [2022-07-21 08:02:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-21 08:02:59,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:02:59,448 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] [2022-07-21 08:02:59,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:02:59,663 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,SelfDestructingSolverStorable7 [2022-07-21 08:02:59,664 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:02:59,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:02:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1233481266, now seen corresponding path program 1 times [2022-07-21 08:02:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:02:59,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933428424] [2022-07-21 08:02:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:59,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:02:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:59,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:02:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:59,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:02:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:59,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 08:02:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:59,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 08:02:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 08:02:59,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:02:59,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933428424] [2022-07-21 08:02:59,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933428424] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:02:59,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058707168] [2022-07-21 08:02:59,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:02:59,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:02:59,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:02:59,739 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) [2022-07-21 08:02:59,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:02:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:02:59,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:02:59,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:02:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 08:02:59,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:02:59,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058707168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:02:59,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:02:59,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-21 08:02:59,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972075662] [2022-07-21 08:02:59,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:02:59,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:02:59,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:02:59,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:02:59,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:02:59,856 INFO L87 Difference]: Start difference. First operand 1200 states and 1619 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) [2022-07-21 08:02:59,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:02:59,898 INFO L93 Difference]: Finished difference Result 1844 states and 2457 transitions. [2022-07-21 08:02:59,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:02:59,899 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 [2022-07-21 08:02:59,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:02:59,903 INFO L225 Difference]: With dead ends: 1844 [2022-07-21 08:02:59,903 INFO L226 Difference]: Without dead ends: 1096 [2022-07-21 08:02:59,904 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 [2022-07-21 08:02:59,906 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 484 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 628 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 [2022-07-21 08:02:59,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 628 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:02:59,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-07-21 08:02:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1084. [2022-07-21 08:02:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1084 states, 970 states have (on average 1.3391752577319587) internal successors, (1299), 984 states have internal predecessors, (1299), 69 states have call successors, (69), 37 states have call predecessors, (69), 43 states have return successors, (96), 63 states have call predecessors, (96), 68 states have call successors, (96) [2022-07-21 08:02:59,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1084 states to 1084 states and 1464 transitions. [2022-07-21 08:02:59,947 INFO L78 Accepts]: Start accepts. Automaton has 1084 states and 1464 transitions. Word has length 88 [2022-07-21 08:02:59,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:02:59,948 INFO L495 AbstractCegarLoop]: Abstraction has 1084 states and 1464 transitions. [2022-07-21 08:02:59,948 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) [2022-07-21 08:02:59,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1084 states and 1464 transitions. [2022-07-21 08:02:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-21 08:02:59,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:02:59,950 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] [2022-07-21 08:02:59,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:00,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:00,160 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:00,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:00,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1258930737, now seen corresponding path program 1 times [2022-07-21 08:03:00,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:00,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039021397] [2022-07-21 08:03:00,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:00,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:03:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 08:03:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 08:03:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 08:03:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 08:03:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 08:03:00,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:00,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039021397] [2022-07-21 08:03:00,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039021397] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:03:00,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2785777] [2022-07-21 08:03:00,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:00,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:00,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:03:00,207 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) [2022-07-21 08:03:00,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 08:03:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:03:00,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:03:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:03:00,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:03:00,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2785777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:00,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:03:00,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-21 08:03:00,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959876579] [2022-07-21 08:03:00,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:00,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:03:00,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:00,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:03:00,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:00,324 INFO L87 Difference]: Start difference. First operand 1084 states and 1464 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) [2022-07-21 08:03:00,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:00,352 INFO L93 Difference]: Finished difference Result 1396 states and 1852 transitions. [2022-07-21 08:03:00,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:03:00,353 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 [2022-07-21 08:03:00,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:00,354 INFO L225 Difference]: With dead ends: 1396 [2022-07-21 08:03:00,354 INFO L226 Difference]: Without dead ends: 278 [2022-07-21 08:03:00,356 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 [2022-07-21 08:03:00,356 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 61 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1065 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 [2022-07-21 08:03:00,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1065 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:03:00,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-21 08:03:00,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-07-21 08:03:00,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 249 states have (on average 1.5582329317269077) internal successors, (388), 250 states have internal predecessors, (388), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 08:03:00,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 432 transitions. [2022-07-21 08:03:00,363 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 432 transitions. Word has length 103 [2022-07-21 08:03:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:00,363 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 432 transitions. [2022-07-21 08:03:00,363 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) [2022-07-21 08:03:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 432 transitions. [2022-07-21 08:03:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:00,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:00,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:00,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 08:03:00,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:03:00,581 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:00,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:00,582 INFO L85 PathProgramCache]: Analyzing trace with hash 167686775, now seen corresponding path program 1 times [2022-07-21 08:03:00,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:00,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430631225] [2022-07-21 08:03:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:00,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:00,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:00,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:00,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:00,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430631225] [2022-07-21 08:03:00,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430631225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:00,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:00,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:03:00,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730323296] [2022-07-21 08:03:00,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:00,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:03:00,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:00,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:03:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:03:00,649 INFO L87 Difference]: Start difference. First operand 278 states and 432 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:01,301 INFO L93 Difference]: Finished difference Result 645 states and 1020 transitions. [2022-07-21 08:03:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:03:01,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:01,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:01,305 INFO L225 Difference]: With dead ends: 645 [2022-07-21 08:03:01,305 INFO L226 Difference]: Without dead ends: 376 [2022-07-21 08:03:01,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:03:01,306 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 728 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:01,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 761 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:03:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-07-21 08:03:01,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 278. [2022-07-21 08:03:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 249 states have (on average 1.5542168674698795) internal successors, (387), 250 states have internal predecessors, (387), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 08:03:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 431 transitions. [2022-07-21 08:03:01,318 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 431 transitions. Word has length 134 [2022-07-21 08:03:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:01,319 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 431 transitions. [2022-07-21 08:03:01,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 431 transitions. [2022-07-21 08:03:01,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:01,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:01,322 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] [2022-07-21 08:03:01,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:03:01,322 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:01,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:01,323 INFO L85 PathProgramCache]: Analyzing trace with hash -779351111, now seen corresponding path program 1 times [2022-07-21 08:03:01,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:01,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799982773] [2022-07-21 08:03:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:01,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:01,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:01,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:01,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:01,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:01,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:01,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:01,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799982773] [2022-07-21 08:03:01,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799982773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:01,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:01,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:03:01,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424354227] [2022-07-21 08:03:01,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:01,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:03:01,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:03:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:03:01,402 INFO L87 Difference]: Start difference. First operand 278 states and 431 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:02,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:02,846 INFO L93 Difference]: Finished difference Result 1006 states and 1598 transitions. [2022-07-21 08:03:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:03:02,846 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:02,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:02,849 INFO L225 Difference]: With dead ends: 1006 [2022-07-21 08:03:02,849 INFO L226 Difference]: Without dead ends: 745 [2022-07-21 08:03:02,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:02,850 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 1093 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:02,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1204 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 08:03:02,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-07-21 08:03:02,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 550. [2022-07-21 08:03:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 497 states have (on average 1.567404426559356) internal successors, (779), 499 states have internal predecessors, (779), 39 states have call successors, (39), 12 states have call predecessors, (39), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-07-21 08:03:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 860 transitions. [2022-07-21 08:03:02,875 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 860 transitions. Word has length 134 [2022-07-21 08:03:02,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:02,875 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 860 transitions. [2022-07-21 08:03:02,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:02,875 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 860 transitions. [2022-07-21 08:03:02,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:02,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:02,877 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] [2022-07-21 08:03:02,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:03:02,877 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:02,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:02,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1809112637, now seen corresponding path program 1 times [2022-07-21 08:03:02,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:02,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910622605] [2022-07-21 08:03:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:02,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:02,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:02,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:02,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:02,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:02,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:02,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910622605] [2022-07-21 08:03:02,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910622605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:02,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:02,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:02,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616362825] [2022-07-21 08:03:02,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:02,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:02,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:02,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:02,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:02,977 INFO L87 Difference]: Start difference. First operand 550 states and 860 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:04,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:04,775 INFO L93 Difference]: Finished difference Result 1659 states and 2636 transitions. [2022-07-21 08:03:04,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:04,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:04,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:04,780 INFO L225 Difference]: With dead ends: 1659 [2022-07-21 08:03:04,780 INFO L226 Difference]: Without dead ends: 1126 [2022-07-21 08:03:04,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:03:04,782 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 1111 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:04,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 2084 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:03:04,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-07-21 08:03:04,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 803. [2022-07-21 08:03:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 726 states have (on average 1.5606060606060606) internal successors, (1133), 729 states have internal predecessors, (1133), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-07-21 08:03:04,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1250 transitions. [2022-07-21 08:03:04,831 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1250 transitions. Word has length 134 [2022-07-21 08:03:04,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:04,831 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1250 transitions. [2022-07-21 08:03:04,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:04,831 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1250 transitions. [2022-07-21 08:03:04,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:04,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:04,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:04,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:03:04,833 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:04,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:04,833 INFO L85 PathProgramCache]: Analyzing trace with hash -483968389, now seen corresponding path program 1 times [2022-07-21 08:03:04,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:04,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175029886] [2022-07-21 08:03:04,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:04,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:04,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:04,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:04,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:04,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:04,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175029886] [2022-07-21 08:03:04,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175029886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:04,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:04,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:04,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547884449] [2022-07-21 08:03:04,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:04,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:04,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:04,918 INFO L87 Difference]: Start difference. First operand 803 states and 1250 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:06,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:06,724 INFO L93 Difference]: Finished difference Result 2620 states and 4154 transitions. [2022-07-21 08:03:06,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:06,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:06,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:06,730 INFO L225 Difference]: With dead ends: 2620 [2022-07-21 08:03:06,730 INFO L226 Difference]: Without dead ends: 1834 [2022-07-21 08:03:06,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:03:06,732 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 1105 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:06,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 2072 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:03:06,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2022-07-21 08:03:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1313. [2022-07-21 08:03:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1313 states, 1188 states have (on average 1.5555555555555556) internal successors, (1848), 1193 states have internal predecessors, (1848), 90 states have call successors, (90), 30 states have call predecessors, (90), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-07-21 08:03:06,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1313 states to 1313 states and 2041 transitions. [2022-07-21 08:03:06,784 INFO L78 Accepts]: Start accepts. Automaton has 1313 states and 2041 transitions. Word has length 134 [2022-07-21 08:03:06,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:06,784 INFO L495 AbstractCegarLoop]: Abstraction has 1313 states and 2041 transitions. [2022-07-21 08:03:06,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 1313 states and 2041 transitions. [2022-07-21 08:03:06,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:06,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:06,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:03:06,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:03:06,786 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:06,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash -12612039, now seen corresponding path program 1 times [2022-07-21 08:03:06,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:06,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933488941] [2022-07-21 08:03:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:06,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:06,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:06,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:06,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:06,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933488941] [2022-07-21 08:03:06,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933488941] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:06,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:06,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:06,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668283510] [2022-07-21 08:03:06,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:06,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:06,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:06,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:06,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:06,872 INFO L87 Difference]: Start difference. First operand 1313 states and 2041 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:08,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:08,690 INFO L93 Difference]: Finished difference Result 4476 states and 7069 transitions. [2022-07-21 08:03:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:08,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:08,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:08,704 INFO L225 Difference]: With dead ends: 4476 [2022-07-21 08:03:08,704 INFO L226 Difference]: Without dead ends: 3180 [2022-07-21 08:03:08,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:03:08,709 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 1104 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 2274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:08,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 2067 Invalid, 2274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:03:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2022-07-21 08:03:08,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 2334. [2022-07-21 08:03:08,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.551348793185045) internal successors, (3278), 2122 states have internal predecessors, (3278), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-21 08:03:08,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3629 transitions. [2022-07-21 08:03:08,843 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3629 transitions. Word has length 134 [2022-07-21 08:03:08,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:08,843 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3629 transitions. [2022-07-21 08:03:08,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:08,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3629 transitions. [2022-07-21 08:03:08,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:08,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:08,844 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] [2022-07-21 08:03:08,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:03:08,845 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:08,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:08,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1659974981, now seen corresponding path program 1 times [2022-07-21 08:03:08,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:08,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414008006] [2022-07-21 08:03:08,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:08,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:08,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:08,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:08,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414008006] [2022-07-21 08:03:08,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414008006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:08,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:08,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:08,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522176058] [2022-07-21 08:03:08,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:08,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:08,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:08,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:08,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:08,931 INFO L87 Difference]: Start difference. First operand 2334 states and 3629 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:09,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:09,889 INFO L93 Difference]: Finished difference Result 5512 states and 8710 transitions. [2022-07-21 08:03:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:09,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:09,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:09,901 INFO L225 Difference]: With dead ends: 5512 [2022-07-21 08:03:09,901 INFO L226 Difference]: Without dead ends: 3195 [2022-07-21 08:03:09,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:09,906 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 843 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:09,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1100 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:03:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3195 states. [2022-07-21 08:03:10,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3195 to 2334. [2022-07-21 08:03:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.547089446284903) internal successors, (3269), 2122 states have internal predecessors, (3269), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-21 08:03:10,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3620 transitions. [2022-07-21 08:03:10,018 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3620 transitions. Word has length 134 [2022-07-21 08:03:10,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:10,019 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3620 transitions. [2022-07-21 08:03:10,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:10,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3620 transitions. [2022-07-21 08:03:10,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:10,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:10,021 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] [2022-07-21 08:03:10,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:03:10,021 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:10,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:10,022 INFO L85 PathProgramCache]: Analyzing trace with hash 503641593, now seen corresponding path program 1 times [2022-07-21 08:03:10,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:10,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316241596] [2022-07-21 08:03:10,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:10,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:10,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:10,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:10,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:10,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:10,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:10,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:10,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316241596] [2022-07-21 08:03:10,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316241596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:10,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:10,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:10,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619893348] [2022-07-21 08:03:10,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:10,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:10,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:10,116 INFO L87 Difference]: Start difference. First operand 2334 states and 3620 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:11,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:11,055 INFO L93 Difference]: Finished difference Result 5502 states and 8663 transitions. [2022-07-21 08:03:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:11,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:11,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:11,067 INFO L225 Difference]: With dead ends: 5502 [2022-07-21 08:03:11,067 INFO L226 Difference]: Without dead ends: 3185 [2022-07-21 08:03:11,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:11,072 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 791 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:11,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1122 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:03:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3185 states. [2022-07-21 08:03:11,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3185 to 2334. [2022-07-21 08:03:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.542830099384761) internal successors, (3260), 2122 states have internal predecessors, (3260), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-21 08:03:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3611 transitions. [2022-07-21 08:03:11,199 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3611 transitions. Word has length 134 [2022-07-21 08:03:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:11,199 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3611 transitions. [2022-07-21 08:03:11,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:11,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3611 transitions. [2022-07-21 08:03:11,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:11,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:11,201 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] [2022-07-21 08:03:11,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:03:11,201 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:11,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash -534942981, now seen corresponding path program 1 times [2022-07-21 08:03:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:11,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91485968] [2022-07-21 08:03:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:11,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:11,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:11,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:11,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:11,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:11,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:11,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91485968] [2022-07-21 08:03:11,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91485968] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:11,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:11,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:11,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431405041] [2022-07-21 08:03:11,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:11,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:11,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:11,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:11,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:11,274 INFO L87 Difference]: Start difference. First operand 2334 states and 3611 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:12,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:12,133 INFO L93 Difference]: Finished difference Result 5492 states and 8616 transitions. [2022-07-21 08:03:12,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:03:12,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:12,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:12,142 INFO L225 Difference]: With dead ends: 5492 [2022-07-21 08:03:12,142 INFO L226 Difference]: Without dead ends: 3175 [2022-07-21 08:03:12,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:03:12,163 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 907 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:12,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [923 Valid, 975 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:03:12,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3175 states. [2022-07-21 08:03:12,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3175 to 2334. [2022-07-21 08:03:12,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2334 states, 2113 states have (on average 1.538570752484619) internal successors, (3251), 2122 states have internal predecessors, (3251), 158 states have call successors, (158), 54 states have call predecessors, (158), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-07-21 08:03:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2334 states to 2334 states and 3602 transitions. [2022-07-21 08:03:12,284 INFO L78 Accepts]: Start accepts. Automaton has 2334 states and 3602 transitions. Word has length 134 [2022-07-21 08:03:12,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:12,284 INFO L495 AbstractCegarLoop]: Abstraction has 2334 states and 3602 transitions. [2022-07-21 08:03:12,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:12,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2334 states and 3602 transitions. [2022-07-21 08:03:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:12,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:12,287 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] [2022-07-21 08:03:12,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:03:12,287 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:12,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:12,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1786858937, now seen corresponding path program 1 times [2022-07-21 08:03:12,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:12,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274526716] [2022-07-21 08:03:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:12,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:12,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:12,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:12,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274526716] [2022-07-21 08:03:12,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274526716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:12,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:12,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:12,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732779150] [2022-07-21 08:03:12,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:12,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:12,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:12,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:12,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:12,365 INFO L87 Difference]: Start difference. First operand 2334 states and 3602 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:14,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:14,317 INFO L93 Difference]: Finished difference Result 8157 states and 12723 transitions. [2022-07-21 08:03:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:03:14,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:14,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:14,343 INFO L225 Difference]: With dead ends: 8157 [2022-07-21 08:03:14,343 INFO L226 Difference]: Without dead ends: 5840 [2022-07-21 08:03:14,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:03:14,348 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 1082 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 2209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:14,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 2044 Invalid, 2209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:03:14,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5840 states. [2022-07-21 08:03:14,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5840 to 4410. [2022-07-21 08:03:14,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4410 states, 3997 states have (on average 1.532899674756067) internal successors, (6127), 4014 states have internal predecessors, (6127), 294 states have call successors, (294), 102 states have call predecessors, (294), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-07-21 08:03:14,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4410 states to 4410 states and 6812 transitions. [2022-07-21 08:03:14,602 INFO L78 Accepts]: Start accepts. Automaton has 4410 states and 6812 transitions. Word has length 134 [2022-07-21 08:03:14,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:14,603 INFO L495 AbstractCegarLoop]: Abstraction has 4410 states and 6812 transitions. [2022-07-21 08:03:14,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:14,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4410 states and 6812 transitions. [2022-07-21 08:03:14,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:14,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:14,605 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] [2022-07-21 08:03:14,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:03:14,605 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:14,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:14,605 INFO L85 PathProgramCache]: Analyzing trace with hash -355001541, now seen corresponding path program 1 times [2022-07-21 08:03:14,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:14,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540119935] [2022-07-21 08:03:14,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:14,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:14,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:14,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:14,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540119935] [2022-07-21 08:03:14,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540119935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:14,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:14,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:14,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726897255] [2022-07-21 08:03:14,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:14,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:14,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:14,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:14,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:14,675 INFO L87 Difference]: Start difference. First operand 4410 states and 6812 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:17,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:17,193 INFO L93 Difference]: Finished difference Result 17519 states and 27285 transitions. [2022-07-21 08:03:17,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:03:17,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:17,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:17,243 INFO L225 Difference]: With dead ends: 17519 [2022-07-21 08:03:17,243 INFO L226 Difference]: Without dead ends: 13126 [2022-07-21 08:03:17,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:03:17,257 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 1414 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1438 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:17,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1438 Valid, 2027 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2117 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:03:17,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13126 states. [2022-07-21 08:03:17,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13126 to 8523. [2022-07-21 08:03:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8523 states, 7742 states have (on average 1.5315164040299665) internal successors, (11857), 7775 states have internal predecessors, (11857), 550 states have call successors, (550), 198 states have call predecessors, (550), 230 states have return successors, (825), 581 states have call predecessors, (825), 550 states have call successors, (825) [2022-07-21 08:03:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 13232 transitions. [2022-07-21 08:03:17,794 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 13232 transitions. Word has length 134 [2022-07-21 08:03:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:17,794 INFO L495 AbstractCegarLoop]: Abstraction has 8523 states and 13232 transitions. [2022-07-21 08:03:17,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:17,794 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 13232 transitions. [2022-07-21 08:03:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:17,799 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:17,799 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] [2022-07-21 08:03:17,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:03:17,799 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash -978283143, now seen corresponding path program 1 times [2022-07-21 08:03:17,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:17,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686958849] [2022-07-21 08:03:17,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:17,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:17,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:17,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:17,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:17,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686958849] [2022-07-21 08:03:17,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686958849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:17,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:17,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:17,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103377469] [2022-07-21 08:03:17,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:17,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:17,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:17,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:17,872 INFO L87 Difference]: Start difference. First operand 8523 states and 13232 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:21,607 INFO L93 Difference]: Finished difference Result 33324 states and 52167 transitions. [2022-07-21 08:03:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:03:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:21,677 INFO L225 Difference]: With dead ends: 33324 [2022-07-21 08:03:21,677 INFO L226 Difference]: Without dead ends: 24818 [2022-07-21 08:03:21,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:03:21,704 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1142 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2433 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:21,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 2126 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2433 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 08:03:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24818 states. [2022-07-21 08:03:22,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24818 to 16765. [2022-07-21 08:03:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16765 states, 15264 states have (on average 1.532822327044025) internal successors, (23397), 15329 states have internal predecessors, (23397), 1046 states have call successors, (1046), 390 states have call predecessors, (1046), 454 states have return successors, (1839), 1109 states have call predecessors, (1839), 1046 states have call successors, (1839) [2022-07-21 08:03:22,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16765 states to 16765 states and 26282 transitions. [2022-07-21 08:03:22,857 INFO L78 Accepts]: Start accepts. Automaton has 16765 states and 26282 transitions. Word has length 134 [2022-07-21 08:03:22,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:22,857 INFO L495 AbstractCegarLoop]: Abstraction has 16765 states and 26282 transitions. [2022-07-21 08:03:22,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:22,857 INFO L276 IsEmpty]: Start isEmpty. Operand 16765 states and 26282 transitions. [2022-07-21 08:03:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:22,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:22,866 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] [2022-07-21 08:03:22,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:03:22,866 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:22,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash 411010871, now seen corresponding path program 1 times [2022-07-21 08:03:22,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:22,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578806507] [2022-07-21 08:03:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:22,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:22,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:22,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:22,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:22,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:22,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:22,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:22,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578806507] [2022-07-21 08:03:22,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578806507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:22,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:22,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:22,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774890017] [2022-07-21 08:03:22,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:22,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:22,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:22,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:22,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:22,962 INFO L87 Difference]: Start difference. First operand 16765 states and 26282 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:28,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:28,555 INFO L93 Difference]: Finished difference Result 64764 states and 102287 transitions. [2022-07-21 08:03:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:03:28,556 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:28,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:28,697 INFO L225 Difference]: With dead ends: 64764 [2022-07-21 08:03:28,697 INFO L226 Difference]: Without dead ends: 48016 [2022-07-21 08:03:28,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:03:28,743 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1291 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:28,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 2013 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:03:28,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48016 states. [2022-07-21 08:03:31,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48016 to 33214. [2022-07-21 08:03:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33214 states, 30305 states have (on average 1.5344992575482594) internal successors, (46503), 30434 states have internal predecessors, (46503), 2006 states have call successors, (2006), 774 states have call predecessors, (2006), 902 states have return successors, (4321), 2133 states have call predecessors, (4321), 2006 states have call successors, (4321) [2022-07-21 08:03:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33214 states to 33214 states and 52830 transitions. [2022-07-21 08:03:31,397 INFO L78 Accepts]: Start accepts. Automaton has 33214 states and 52830 transitions. Word has length 134 [2022-07-21 08:03:31,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:31,397 INFO L495 AbstractCegarLoop]: Abstraction has 33214 states and 52830 transitions. [2022-07-21 08:03:31,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:31,397 INFO L276 IsEmpty]: Start isEmpty. Operand 33214 states and 52830 transitions. [2022-07-21 08:03:31,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:31,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:31,414 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] [2022-07-21 08:03:31,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:03:31,414 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:31,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1622383175, now seen corresponding path program 1 times [2022-07-21 08:03:31,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:31,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141399804] [2022-07-21 08:03:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:31,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:31,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:31,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141399804] [2022-07-21 08:03:31,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141399804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:31,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:31,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:31,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163108657] [2022-07-21 08:03:31,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:31,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:31,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:31,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:31,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:31,509 INFO L87 Difference]: Start difference. First operand 33214 states and 52830 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:03:41,208 INFO L93 Difference]: Finished difference Result 126459 states and 202581 transitions. [2022-07-21 08:03:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:03:41,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:03:41,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:03:41,506 INFO L225 Difference]: With dead ends: 126459 [2022-07-21 08:03:41,507 INFO L226 Difference]: Without dead ends: 93262 [2022-07-21 08:03:41,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:03:41,599 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 1176 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:03:41,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 1481 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:03:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93262 states. [2022-07-21 08:03:46,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93262 to 66047. [2022-07-21 08:03:46,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66047 states, 60386 states have (on average 1.5363991653694564) internal successors, (92777), 60643 states have internal predecessors, (92777), 3862 states have call successors, (3862), 1542 states have call predecessors, (3862), 1798 states have return successors, (10679), 4117 states have call predecessors, (10679), 3862 states have call successors, (10679) [2022-07-21 08:03:46,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66047 states to 66047 states and 107318 transitions. [2022-07-21 08:03:46,608 INFO L78 Accepts]: Start accepts. Automaton has 66047 states and 107318 transitions. Word has length 134 [2022-07-21 08:03:46,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:03:46,608 INFO L495 AbstractCegarLoop]: Abstraction has 66047 states and 107318 transitions. [2022-07-21 08:03:46,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:03:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 66047 states and 107318 transitions. [2022-07-21 08:03:46,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:03:46,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:03:46,642 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] [2022-07-21 08:03:46,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:03:46,644 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:03:46,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:03:46,644 INFO L85 PathProgramCache]: Analyzing trace with hash 805875447, now seen corresponding path program 1 times [2022-07-21 08:03:46,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:03:46,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096969851] [2022-07-21 08:03:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:03:46,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:03:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:03:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:03:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:03:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:03:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:03:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:03:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:03:46,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:03:46,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096969851] [2022-07-21 08:03:46,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096969851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:03:46,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:03:46,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:03:46,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173616511] [2022-07-21 08:03:46,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:03:46,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:03:46,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:03:46,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:03:46,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:03:46,748 INFO L87 Difference]: Start difference. First operand 66047 states and 107318 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:04,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:04,112 INFO L93 Difference]: Finished difference Result 247482 states and 405227 transitions. [2022-07-21 08:04:04,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:04:04,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-21 08:04:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:04,729 INFO L225 Difference]: With dead ends: 247482 [2022-07-21 08:04:04,729 INFO L226 Difference]: Without dead ends: 181452 [2022-07-21 08:04:04,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:04:04,929 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 1211 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:04,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 2003 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:04:05,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181452 states. [2022-07-21 08:04:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181452 to 131584. [2022-07-21 08:04:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131584 states, 120547 states have (on average 1.5384124034608908) internal successors, (185451), 121060 states have internal predecessors, (185451), 7446 states have call successors, (7446), 3078 states have call predecessors, (7446), 3590 states have return successors, (27641), 7957 states have call predecessors, (27641), 7446 states have call successors, (27641) [2022-07-21 08:04:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131584 states to 131584 states and 220538 transitions. [2022-07-21 08:04:15,471 INFO L78 Accepts]: Start accepts. Automaton has 131584 states and 220538 transitions. Word has length 134 [2022-07-21 08:04:15,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:15,471 INFO L495 AbstractCegarLoop]: Abstraction has 131584 states and 220538 transitions. [2022-07-21 08:04:15,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:04:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 131584 states and 220538 transitions. [2022-07-21 08:04:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 08:04:15,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:15,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:04:15,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:04:15,541 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:15,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:15,541 INFO L85 PathProgramCache]: Analyzing trace with hash -501266951, now seen corresponding path program 1 times [2022-07-21 08:04:15,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:15,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451560028] [2022-07-21 08:04:15,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:15,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 08:04:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:04:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:04:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:04:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:15,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:15,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451560028] [2022-07-21 08:04:15,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451560028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:15,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:15,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:04:15,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707179322] [2022-07-21 08:04:15,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:15,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:04:15,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:15,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:04:15,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:04:15,637 INFO L87 Difference]: Start difference. First operand 131584 states and 220538 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)