./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.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 37139db5f2012b0b7a96ab437e26855d856636bc4064d013c0b416905ff6e54c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:15:10,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:15:10,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:15:10,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:15:10,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:15:10,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:15:10,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:15:10,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:15:10,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:15:10,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:15:10,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:15:10,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:15:10,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:15:10,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:15:10,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:15:10,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:15:10,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:15:10,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:15:10,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:15:10,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:15:10,965 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:15:10,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:15:10,970 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:15:10,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:15:10,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:15:10,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:15:10,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:15:10,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:15:10,976 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:15:10,976 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:15:10,977 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:15:10,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:15:10,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:15:10,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:15:10,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:15:10,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:15:10,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:15:10,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:15:10,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:15:10,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:15:10,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:15:10,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:15:10,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:15:11,001 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:15:11,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:15:11,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:15:11,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:15:11,002 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:15:11,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:15:11,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:15:11,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:15:11,003 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:15:11,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:15:11,004 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:15:11,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:15:11,005 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:15:11,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:15:11,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:15:11,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:15:11,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:15:11,005 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:15:11,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:15:11,006 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:15:11,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:15:11,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:15:11,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:15:11,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:15:11,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:15:11,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:15:11,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:15:11,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:15:11,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:15:11,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:15:11,008 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:15:11,008 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:15:11,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:15:11,009 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37139db5f2012b0b7a96ab437e26855d856636bc4064d013c0b416905ff6e54c [2022-07-13 21:15:11,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:15:11,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:15:11,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:15:11,213 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:15:11,214 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:15:11,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-07-13 21:15:11,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21681dcc6/a9f7c72b7b1f4cffa317ff324da00eed/FLAGe5c9982db [2022-07-13 21:15:11,632 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:15:11,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-07-13 21:15:11,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21681dcc6/a9f7c72b7b1f4cffa317ff324da00eed/FLAGe5c9982db [2022-07-13 21:15:12,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21681dcc6/a9f7c72b7b1f4cffa317ff324da00eed [2022-07-13 21:15:12,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:15:12,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:15:12,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:15:12,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:15:12,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:15:12,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ef4b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12, skipping insertion in model container [2022-07-13 21:15:12,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:15:12,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:15:12,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[911,924] [2022-07-13 21:15:12,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[8416,8429] [2022-07-13 21:15:12,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:15:12,332 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:15:12,339 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[911,924] [2022-07-13 21:15:12,360 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c[8416,8429] [2022-07-13 21:15:12,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:15:12,399 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:15:12,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12 WrapperNode [2022-07-13 21:15:12,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:15:12,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:15:12,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:15:12,401 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:15:12,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,461 INFO L137 Inliner]: procedures = 63, calls = 73, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 614 [2022-07-13 21:15:12,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:15:12,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:15:12,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:15:12,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:15:12,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:15:12,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:15:12,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:15:12,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:15:12,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12" (1/1) ... [2022-07-13 21:15:12,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:15:12,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:15:12,543 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) [2022-07-13 21:15:12,566 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 [2022-07-13 21:15:12,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:15:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:15:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:15:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-13 21:15:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-13 21:15:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:15:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:15:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:15:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:15:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-13 21:15:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-13 21:15:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:15:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:15:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:15:12,578 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:15:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-13 21:15:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-13 21:15:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-13 21:15:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-13 21:15:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-13 21:15:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-13 21:15:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:15:12,579 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:15:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:15:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:15:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:15:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-13 21:15:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-13 21:15:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:15:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:15:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:15:12,580 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:15:12,667 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:15:12,668 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:15:13,083 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-13 21:15:13,083 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-13 21:15:13,114 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:15:13,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:15:13,121 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-13 21:15:13,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:15:13 BoogieIcfgContainer [2022-07-13 21:15:13,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:15:13,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:15:13,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:15:13,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:15:13,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:15:12" (1/3) ... [2022-07-13 21:15:13,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787c8a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:15:13, skipping insertion in model container [2022-07-13 21:15:13,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:15:12" (2/3) ... [2022-07-13 21:15:13,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787c8a43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:15:13, skipping insertion in model container [2022-07-13 21:15:13,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:15:13" (3/3) ... [2022-07-13 21:15:13,129 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-07-13 21:15:13,152 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:15:13,152 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:15:13,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:15:13,221 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@684f91cd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1eeba6b3 [2022-07-13 21:15:13,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:15:13,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 248 states have (on average 1.5846774193548387) internal successors, (393), 254 states have internal predecessors, (393), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-13 21:15:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:15:13,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:13,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:13,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:13,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:13,254 INFO L85 PathProgramCache]: Analyzing trace with hash 864909050, now seen corresponding path program 1 times [2022-07-13 21:15:13,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:13,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832268696] [2022-07-13 21:15:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:13,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:13,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:13,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:13,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:15:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:13,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:15:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:15:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:13,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832268696] [2022-07-13 21:15:13,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832268696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:13,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:13,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:15:13,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134002358] [2022-07-13 21:15:13,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:13,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:15:13,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:13,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:15:13,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:15:13,628 INFO L87 Difference]: Start difference. First operand has 299 states, 248 states have (on average 1.5846774193548387) internal successors, (393), 254 states have internal predecessors, (393), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:14,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:14,550 INFO L93 Difference]: Finished difference Result 764 states and 1182 transitions. [2022-07-13 21:15:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:15:14,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:15:14,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:14,570 INFO L225 Difference]: With dead ends: 764 [2022-07-13 21:15:14,571 INFO L226 Difference]: Without dead ends: 475 [2022-07-13 21:15:14,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-13 21:15:14,582 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 1058 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:14,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1635 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:15:14,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-07-13 21:15:14,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 405. [2022-07-13 21:15:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 333 states have (on average 1.4804804804804805) internal successors, (493), 340 states have internal predecessors, (493), 47 states have call successors, (47), 21 states have call predecessors, (47), 23 states have return successors, (56), 46 states have call predecessors, (56), 45 states have call successors, (56) [2022-07-13 21:15:14,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 596 transitions. [2022-07-13 21:15:14,691 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 596 transitions. Word has length 65 [2022-07-13 21:15:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:14,692 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 596 transitions. [2022-07-13 21:15:14,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:14,693 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 596 transitions. [2022-07-13 21:15:14,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:15:14,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:14,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:14,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:15:14,703 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:14,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:14,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1163677060, now seen corresponding path program 1 times [2022-07-13 21:15:14,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:14,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059925281] [2022-07-13 21:15:14,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:14,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:14,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:14,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:14,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:14,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:14,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:15:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:15:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:15:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:14,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:14,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059925281] [2022-07-13 21:15:14,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059925281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:14,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:14,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:15:14,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866046000] [2022-07-13 21:15:14,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:14,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:15:14,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:14,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:15:14,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:15:14,856 INFO L87 Difference]: Start difference. First operand 405 states and 596 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-13 21:15:16,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:16,270 INFO L93 Difference]: Finished difference Result 1498 states and 2175 transitions. [2022-07-13 21:15:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:15:16,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-13 21:15:16,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:16,281 INFO L225 Difference]: With dead ends: 1498 [2022-07-13 21:15:16,281 INFO L226 Difference]: Without dead ends: 1273 [2022-07-13 21:15:16,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:15:16,285 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 2404 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2422 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:16,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2422 Valid, 2308 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:15:16,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-07-13 21:15:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1177. [2022-07-13 21:15:16,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 951 states have (on average 1.4111461619348056) internal successors, (1342), 971 states have internal predecessors, (1342), 130 states have call successors, (130), 81 states have call predecessors, (130), 94 states have return successors, (161), 127 states have call predecessors, (161), 128 states have call successors, (161) [2022-07-13 21:15:16,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1633 transitions. [2022-07-13 21:15:16,346 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1633 transitions. Word has length 65 [2022-07-13 21:15:16,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:16,347 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1633 transitions. [2022-07-13 21:15:16,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-13 21:15:16,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1633 transitions. [2022-07-13 21:15:16,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:15:16,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:16,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:16,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:15:16,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:16,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:16,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1733422016, now seen corresponding path program 1 times [2022-07-13 21:15:16,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:16,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907802338] [2022-07-13 21:15:16,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:16,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:16,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:16,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:16,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:15:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:15:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:16,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:16,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:16,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907802338] [2022-07-13 21:15:16,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907802338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:16,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:16,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:15:16,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437627065] [2022-07-13 21:15:16,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:16,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:15:16,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:16,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:15:16,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:15:16,482 INFO L87 Difference]: Start difference. First operand 1177 states and 1633 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:15:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:17,113 INFO L93 Difference]: Finished difference Result 2277 states and 3157 transitions. [2022-07-13 21:15:17,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:15:17,114 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-13 21:15:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:17,118 INFO L225 Difference]: With dead ends: 2277 [2022-07-13 21:15:17,118 INFO L226 Difference]: Without dead ends: 1287 [2022-07-13 21:15:17,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:15:17,121 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 345 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:17,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1865 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:15:17,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-07-13 21:15:17,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1217. [2022-07-13 21:15:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 983 states have (on average 1.3957273652085453) internal successors, (1372), 1003 states have internal predecessors, (1372), 130 states have call successors, (130), 81 states have call predecessors, (130), 102 states have return successors, (169), 135 states have call predecessors, (169), 128 states have call successors, (169) [2022-07-13 21:15:17,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1671 transitions. [2022-07-13 21:15:17,163 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1671 transitions. Word has length 66 [2022-07-13 21:15:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:17,163 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1671 transitions. [2022-07-13 21:15:17,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:15:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1671 transitions. [2022-07-13 21:15:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:15:17,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:17,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:17,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:15:17,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:17,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:17,165 INFO L85 PathProgramCache]: Analyzing trace with hash 704062718, now seen corresponding path program 1 times [2022-07-13 21:15:17,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:17,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147385123] [2022-07-13 21:15:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:17,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:17,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:17,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:17,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:17,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:17,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:17,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 21:15:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:17,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 21:15:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:17,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:17,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147385123] [2022-07-13 21:15:17,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147385123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:17,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:17,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:15:17,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107421835] [2022-07-13 21:15:17,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:17,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:15:17,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:17,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:15:17,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:15:17,268 INFO L87 Difference]: Start difference. First operand 1217 states and 1671 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-13 21:15:18,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:18,627 INFO L93 Difference]: Finished difference Result 3887 states and 5372 transitions. [2022-07-13 21:15:18,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:15:18,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-13 21:15:18,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:18,634 INFO L225 Difference]: With dead ends: 3887 [2022-07-13 21:15:18,634 INFO L226 Difference]: Without dead ends: 1607 [2022-07-13 21:15:18,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:15:18,644 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 2559 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2577 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:18,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2577 Valid, 2191 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:15:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2022-07-13 21:15:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1483. [2022-07-13 21:15:18,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1173 states have (on average 1.3529411764705883) internal successors, (1587), 1197 states have internal predecessors, (1587), 170 states have call successors, (170), 109 states have call predecessors, (170), 138 states have return successors, (221), 179 states have call predecessors, (221), 168 states have call successors, (221) [2022-07-13 21:15:18,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1978 transitions. [2022-07-13 21:15:18,704 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1978 transitions. Word has length 66 [2022-07-13 21:15:18,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:18,705 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 1978 transitions. [2022-07-13 21:15:18,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-13 21:15:18,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1978 transitions. [2022-07-13 21:15:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:15:18,706 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:18,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:18,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:15:18,707 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:18,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:18,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1975322897, now seen corresponding path program 1 times [2022-07-13 21:15:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:18,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816162448] [2022-07-13 21:15:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:18,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:18,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:18,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:18,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:18,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:18,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:15:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:15:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:18,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:15:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:15:18,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:18,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816162448] [2022-07-13 21:15:18,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816162448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:18,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:18,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:15:18,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798907113] [2022-07-13 21:15:18,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:18,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:15:18,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:15:18,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:15:18,841 INFO L87 Difference]: Start difference. First operand 1483 states and 1978 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:15:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:19,477 INFO L93 Difference]: Finished difference Result 2925 states and 3915 transitions. [2022-07-13 21:15:19,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:15:19,477 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-13 21:15:19,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:19,484 INFO L225 Difference]: With dead ends: 2925 [2022-07-13 21:15:19,485 INFO L226 Difference]: Without dead ends: 1629 [2022-07-13 21:15:19,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:19,488 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 340 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:19,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1812 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:15:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-07-13 21:15:19,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1523. [2022-07-13 21:15:19,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1205 states have (on average 1.3385892116182572) internal successors, (1613), 1229 states have internal predecessors, (1613), 170 states have call successors, (170), 109 states have call predecessors, (170), 146 states have return successors, (229), 187 states have call predecessors, (229), 168 states have call successors, (229) [2022-07-13 21:15:19,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2012 transitions. [2022-07-13 21:15:19,558 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2012 transitions. Word has length 91 [2022-07-13 21:15:19,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:19,558 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2012 transitions. [2022-07-13 21:15:19,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:15:19,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2012 transitions. [2022-07-13 21:15:19,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:15:19,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:19,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:19,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:15:19,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:19,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:19,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1531422223, now seen corresponding path program 1 times [2022-07-13 21:15:19,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:19,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292358013] [2022-07-13 21:15:19,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:19,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:19,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:19,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:19,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:19,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:19,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:15:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:15:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:15:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:15:19,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:19,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292358013] [2022-07-13 21:15:19,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292358013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:19,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:19,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:15:19,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332286406] [2022-07-13 21:15:19,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:19,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:15:19,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:19,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:15:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:15:19,623 INFO L87 Difference]: Start difference. First operand 1523 states and 2012 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:20,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:20,203 INFO L93 Difference]: Finished difference Result 3315 states and 4378 transitions. [2022-07-13 21:15:20,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:15:20,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-13 21:15:20,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:20,213 INFO L225 Difference]: With dead ends: 3315 [2022-07-13 21:15:20,214 INFO L226 Difference]: Without dead ends: 2053 [2022-07-13 21:15:20,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-07-13 21:15:20,218 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 786 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:20,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1361 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:15:20,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2022-07-13 21:15:20,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1877. [2022-07-13 21:15:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1487 states have (on average 1.3113651647612643) internal successors, (1950), 1512 states have internal predecessors, (1950), 210 states have call successors, (210), 139 states have call predecessors, (210), 178 states have return successors, (270), 228 states have call predecessors, (270), 208 states have call successors, (270) [2022-07-13 21:15:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2430 transitions. [2022-07-13 21:15:20,283 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2430 transitions. Word has length 91 [2022-07-13 21:15:20,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:20,283 INFO L495 AbstractCegarLoop]: Abstraction has 1877 states and 2430 transitions. [2022-07-13 21:15:20,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2430 transitions. [2022-07-13 21:15:20,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:15:20,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:20,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:20,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:15:20,285 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:20,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:20,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1546940941, now seen corresponding path program 1 times [2022-07-13 21:15:20,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:20,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553128271] [2022-07-13 21:15:20,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:20,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:20,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:20,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:20,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:20,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:20,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:15:20,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:15:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:15:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:15:20,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:20,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553128271] [2022-07-13 21:15:20,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553128271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:20,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:20,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:15:20,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86232403] [2022-07-13 21:15:20,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:20,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:15:20,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:20,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:15:20,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:15:20,373 INFO L87 Difference]: Start difference. First operand 1877 states and 2430 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:21,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:21,050 INFO L93 Difference]: Finished difference Result 3404 states and 4394 transitions. [2022-07-13 21:15:21,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:15:21,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-13 21:15:21,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:21,058 INFO L225 Difference]: With dead ends: 3404 [2022-07-13 21:15:21,058 INFO L226 Difference]: Without dead ends: 1951 [2022-07-13 21:15:21,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-13 21:15:21,063 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 836 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:21,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1504 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:15:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-07-13 21:15:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1656. [2022-07-13 21:15:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1319 states have (on average 1.3131159969673996) internal successors, (1732), 1339 states have internal predecessors, (1732), 182 states have call successors, (182), 120 states have call predecessors, (182), 153 states have return successors, (230), 198 states have call predecessors, (230), 180 states have call successors, (230) [2022-07-13 21:15:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2144 transitions. [2022-07-13 21:15:21,118 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2144 transitions. Word has length 91 [2022-07-13 21:15:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:21,119 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2144 transitions. [2022-07-13 21:15:21,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2144 transitions. [2022-07-13 21:15:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:15:21,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:21,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:21,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:15:21,121 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:21,121 INFO L85 PathProgramCache]: Analyzing trace with hash 392221105, now seen corresponding path program 1 times [2022-07-13 21:15:21,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:21,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377324539] [2022-07-13 21:15:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:21,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:15:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:15:21,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:15:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:15:21,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:21,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377324539] [2022-07-13 21:15:21,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377324539] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:21,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:21,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:21,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183612439] [2022-07-13 21:15:21,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:21,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:21,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:21,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:21,184 INFO L87 Difference]: Start difference. First operand 1656 states and 2144 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 21:15:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:21,538 INFO L93 Difference]: Finished difference Result 4808 states and 6256 transitions. [2022-07-13 21:15:21,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:15:21,538 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-13 21:15:21,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:21,551 INFO L225 Difference]: With dead ends: 4808 [2022-07-13 21:15:21,551 INFO L226 Difference]: Without dead ends: 3339 [2022-07-13 21:15:21,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:15:21,556 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 1137 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:21,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 862 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:15:21,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2022-07-13 21:15:21,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3125. [2022-07-13 21:15:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2468 states have (on average 1.280388978930308) internal successors, (3160), 2517 states have internal predecessors, (3160), 343 states have call successors, (343), 233 states have call predecessors, (343), 312 states have return successors, (513), 377 states have call predecessors, (513), 341 states have call successors, (513) [2022-07-13 21:15:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4016 transitions. [2022-07-13 21:15:21,670 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4016 transitions. Word has length 91 [2022-07-13 21:15:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:21,671 INFO L495 AbstractCegarLoop]: Abstraction has 3125 states and 4016 transitions. [2022-07-13 21:15:21,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 21:15:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4016 transitions. [2022-07-13 21:15:21,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-13 21:15:21,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:21,674 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:21,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:15:21,674 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:21,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:21,674 INFO L85 PathProgramCache]: Analyzing trace with hash -665616973, now seen corresponding path program 1 times [2022-07-13 21:15:21,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:21,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484965355] [2022-07-13 21:15:21,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:21,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:15:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:15:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 21:15:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,719 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:15:21,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:21,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484965355] [2022-07-13 21:15:21,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484965355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:21,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:21,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:15:21,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210689379] [2022-07-13 21:15:21,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:21,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:15:21,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:15:21,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:15:21,721 INFO L87 Difference]: Start difference. First operand 3125 states and 4016 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:22,029 INFO L93 Difference]: Finished difference Result 4709 states and 6000 transitions. [2022-07-13 21:15:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 21:15:22,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-13 21:15:22,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:22,036 INFO L225 Difference]: With dead ends: 4709 [2022-07-13 21:15:22,036 INFO L226 Difference]: Without dead ends: 1771 [2022-07-13 21:15:22,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:15:22,042 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 458 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:22,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1071 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:15:22,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2022-07-13 21:15:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1656. [2022-07-13 21:15:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1319 states have (on average 1.2850644427596665) internal successors, (1695), 1339 states have internal predecessors, (1695), 182 states have call successors, (182), 120 states have call predecessors, (182), 153 states have return successors, (230), 198 states have call predecessors, (230), 180 states have call successors, (230) [2022-07-13 21:15:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2107 transitions. [2022-07-13 21:15:22,109 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2107 transitions. Word has length 91 [2022-07-13 21:15:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:22,110 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2107 transitions. [2022-07-13 21:15:22,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:15:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2107 transitions. [2022-07-13 21:15:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-13 21:15:22,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:22,113 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:22,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:15:22,113 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:22,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1134197990, now seen corresponding path program 1 times [2022-07-13 21:15:22,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:22,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74588542] [2022-07-13 21:15:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:22,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:22,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:15:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:22,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:15:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:22,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:15:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:22,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-13 21:15:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:22,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 21:15:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:22,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 21:15:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:22,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 21:15:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:22,201 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 21:15:22,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:22,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74588542] [2022-07-13 21:15:22,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74588542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:22,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:22,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:15:22,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380196269] [2022-07-13 21:15:22,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:22,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:15:22,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:22,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:15:22,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:15:22,203 INFO L87 Difference]: Start difference. First operand 1656 states and 2107 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:15:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:23,081 INFO L93 Difference]: Finished difference Result 4074 states and 5190 transitions. [2022-07-13 21:15:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 21:15:23,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-13 21:15:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:23,090 INFO L225 Difference]: With dead ends: 4074 [2022-07-13 21:15:23,091 INFO L226 Difference]: Without dead ends: 2454 [2022-07-13 21:15:23,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-13 21:15:23,095 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 1715 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:23,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 1368 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:15:23,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2022-07-13 21:15:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2277. [2022-07-13 21:15:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1786 states have (on average 1.2525195968645018) internal successors, (2237), 1814 states have internal predecessors, (2237), 259 states have call successors, (259), 168 states have call predecessors, (259), 230 states have return successors, (361), 296 states have call predecessors, (361), 257 states have call successors, (361) [2022-07-13 21:15:23,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2857 transitions. [2022-07-13 21:15:23,181 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2857 transitions. Word has length 92 [2022-07-13 21:15:23,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:23,182 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 2857 transitions. [2022-07-13 21:15:23,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:15:23,194 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2857 transitions. [2022-07-13 21:15:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:23,195 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:23,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:23,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:15:23,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:23,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1197403432, now seen corresponding path program 1 times [2022-07-13 21:15:23,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:23,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610317580] [2022-07-13 21:15:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:23,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:23,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:23,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:23,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610317580] [2022-07-13 21:15:23,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610317580] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:23,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:23,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:15:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424503790] [2022-07-13 21:15:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:23,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:15:23,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:15:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:15:23,245 INFO L87 Difference]: Start difference. First operand 2277 states and 2857 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-13 21:15:23,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:23,758 INFO L93 Difference]: Finished difference Result 2498 states and 3201 transitions. [2022-07-13 21:15:23,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:15:23,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 90 [2022-07-13 21:15:23,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:23,766 INFO L225 Difference]: With dead ends: 2498 [2022-07-13 21:15:23,766 INFO L226 Difference]: Without dead ends: 2331 [2022-07-13 21:15:23,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:15:23,767 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 536 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:23,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 806 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:15:23,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2331 states. [2022-07-13 21:15:23,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2331 to 2277. [2022-07-13 21:15:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1786 states have (on average 1.2519596864501679) internal successors, (2236), 1814 states have internal predecessors, (2236), 259 states have call successors, (259), 168 states have call predecessors, (259), 230 states have return successors, (361), 296 states have call predecessors, (361), 257 states have call successors, (361) [2022-07-13 21:15:23,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2856 transitions. [2022-07-13 21:15:23,868 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2856 transitions. Word has length 90 [2022-07-13 21:15:23,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:23,868 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 2856 transitions. [2022-07-13 21:15:23,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-13 21:15:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2856 transitions. [2022-07-13 21:15:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:23,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:23,869 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] [2022-07-13 21:15:23,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:15:23,870 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:23,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:23,870 INFO L85 PathProgramCache]: Analyzing trace with hash 358369770, now seen corresponding path program 1 times [2022-07-13 21:15:23,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:23,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656828012] [2022-07-13 21:15:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:23,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:23,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:23,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656828012] [2022-07-13 21:15:23,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656828012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:23,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:23,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:15:23,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532413207] [2022-07-13 21:15:23,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:23,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:15:23,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:23,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:15:23,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:15:23,934 INFO L87 Difference]: Start difference. First operand 2277 states and 2856 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-13 21:15:24,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:24,840 INFO L93 Difference]: Finished difference Result 2717 states and 3543 transitions. [2022-07-13 21:15:24,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:15:24,841 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2022-07-13 21:15:24,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:24,849 INFO L225 Difference]: With dead ends: 2717 [2022-07-13 21:15:24,849 INFO L226 Difference]: Without dead ends: 2552 [2022-07-13 21:15:24,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:15:24,851 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 871 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:24,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1059 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:15:24,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2022-07-13 21:15:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2445. [2022-07-13 21:15:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2445 states, 1934 states have (on average 1.2740434332988624) internal successors, (2464), 1963 states have internal predecessors, (2464), 272 states have call successors, (272), 174 states have call predecessors, (272), 237 states have return successors, (377), 309 states have call predecessors, (377), 270 states have call successors, (377) [2022-07-13 21:15:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 3113 transitions. [2022-07-13 21:15:24,952 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 3113 transitions. Word has length 90 [2022-07-13 21:15:24,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:24,953 INFO L495 AbstractCegarLoop]: Abstraction has 2445 states and 3113 transitions. [2022-07-13 21:15:24,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-13 21:15:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 3113 transitions. [2022-07-13 21:15:24,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:24,955 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:24,955 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] [2022-07-13 21:15:24,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:15:24,956 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:24,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:24,956 INFO L85 PathProgramCache]: Analyzing trace with hash -816289682, now seen corresponding path program 1 times [2022-07-13 21:15:24,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:24,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300017649] [2022-07-13 21:15:24,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:24,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:24,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:24,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:25,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:25,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:25,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300017649] [2022-07-13 21:15:25,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300017649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:25,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:25,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:25,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848880466] [2022-07-13 21:15:25,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:25,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:25,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:25,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:25,022 INFO L87 Difference]: Start difference. First operand 2445 states and 3113 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:26,259 INFO L93 Difference]: Finished difference Result 3110 states and 4145 transitions. [2022-07-13 21:15:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:15:26,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 21:15:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:26,267 INFO L225 Difference]: With dead ends: 3110 [2022-07-13 21:15:26,267 INFO L226 Difference]: Without dead ends: 2777 [2022-07-13 21:15:26,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:15:26,269 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 868 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:26,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1652 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:15:26,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2022-07-13 21:15:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2602. [2022-07-13 21:15:26,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2071 states have (on average 1.2892322549492998) internal successors, (2670), 2101 states have internal predecessors, (2670), 285 states have call successors, (285), 180 states have call predecessors, (285), 244 states have return successors, (392), 323 states have call predecessors, (392), 283 states have call successors, (392) [2022-07-13 21:15:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3347 transitions. [2022-07-13 21:15:26,363 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3347 transitions. Word has length 90 [2022-07-13 21:15:26,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:26,363 INFO L495 AbstractCegarLoop]: Abstraction has 2602 states and 3347 transitions. [2022-07-13 21:15:26,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3347 transitions. [2022-07-13 21:15:26,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:26,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:26,365 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] [2022-07-13 21:15:26,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:15:26,365 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:26,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash 70933164, now seen corresponding path program 1 times [2022-07-13 21:15:26,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:26,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722287114] [2022-07-13 21:15:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:26,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:26,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:26,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:26,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:26,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:26,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:26,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:26,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:26,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722287114] [2022-07-13 21:15:26,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722287114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:26,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:26,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:26,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476647337] [2022-07-13 21:15:26,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:26,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:26,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:26,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:26,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:26,432 INFO L87 Difference]: Start difference. First operand 2602 states and 3347 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:27,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:27,493 INFO L93 Difference]: Finished difference Result 3688 states and 5027 transitions. [2022-07-13 21:15:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:15:27,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 21:15:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:27,504 INFO L225 Difference]: With dead ends: 3688 [2022-07-13 21:15:27,504 INFO L226 Difference]: Without dead ends: 3198 [2022-07-13 21:15:27,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:15:27,507 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 865 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:27,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1644 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:15:27,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2022-07-13 21:15:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 2917. [2022-07-13 21:15:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2346 states have (on average 1.314151747655584) internal successors, (3083), 2378 states have internal predecessors, (3083), 311 states have call successors, (311), 192 states have call predecessors, (311), 258 states have return successors, (426), 351 states have call predecessors, (426), 309 states have call successors, (426) [2022-07-13 21:15:27,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3820 transitions. [2022-07-13 21:15:27,621 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3820 transitions. Word has length 90 [2022-07-13 21:15:27,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:27,621 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 3820 transitions. [2022-07-13 21:15:27,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:27,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3820 transitions. [2022-07-13 21:15:27,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:27,623 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:27,623 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] [2022-07-13 21:15:27,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:15:27,623 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:27,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:27,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1840109394, now seen corresponding path program 1 times [2022-07-13 21:15:27,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:27,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396620211] [2022-07-13 21:15:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:27,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:27,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:27,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396620211] [2022-07-13 21:15:27,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396620211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:27,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:27,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:27,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057974071] [2022-07-13 21:15:27,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:27,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:27,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:27,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:27,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:27,692 INFO L87 Difference]: Start difference. First operand 2917 states and 3820 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:28,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:28,849 INFO L93 Difference]: Finished difference Result 4803 states and 6724 transitions. [2022-07-13 21:15:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:15:28,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 21:15:28,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:28,864 INFO L225 Difference]: With dead ends: 4803 [2022-07-13 21:15:28,864 INFO L226 Difference]: Without dead ends: 3998 [2022-07-13 21:15:28,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:15:28,868 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 861 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:28,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1640 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:15:28,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2022-07-13 21:15:29,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3548. [2022-07-13 21:15:29,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 2897 states have (on average 1.349326889886089) internal successors, (3909), 2933 states have internal predecessors, (3909), 363 states have call successors, (363), 216 states have call predecessors, (363), 286 states have return successors, (500), 407 states have call predecessors, (500), 361 states have call successors, (500) [2022-07-13 21:15:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 4772 transitions. [2022-07-13 21:15:29,068 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 4772 transitions. Word has length 90 [2022-07-13 21:15:29,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:29,068 INFO L495 AbstractCegarLoop]: Abstraction has 3548 states and 4772 transitions. [2022-07-13 21:15:29,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:29,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 4772 transitions. [2022-07-13 21:15:29,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:29,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:29,071 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] [2022-07-13 21:15:29,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:15:29,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:29,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:29,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1763208596, now seen corresponding path program 1 times [2022-07-13 21:15:29,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:29,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384358520] [2022-07-13 21:15:29,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:29,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:29,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:29,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384358520] [2022-07-13 21:15:29,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384358520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:29,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:29,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:29,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80496282] [2022-07-13 21:15:29,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:29,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:29,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:29,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:29,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:29,141 INFO L87 Difference]: Start difference. First operand 3548 states and 4772 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:30,245 INFO L93 Difference]: Finished difference Result 7032 states and 10134 transitions. [2022-07-13 21:15:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:15:30,245 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 21:15:30,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:30,267 INFO L225 Difference]: With dead ends: 7032 [2022-07-13 21:15:30,267 INFO L226 Difference]: Without dead ends: 5596 [2022-07-13 21:15:30,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:15:30,273 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 911 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:30,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1261 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:15:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2022-07-13 21:15:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 4815. [2022-07-13 21:15:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4815 states, 4004 states have (on average 1.3903596403596403) internal successors, (5567), 4048 states have internal predecessors, (5567), 467 states have call successors, (467), 264 states have call predecessors, (467), 342 states have return successors, (666), 519 states have call predecessors, (666), 465 states have call successors, (666) [2022-07-13 21:15:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 6700 transitions. [2022-07-13 21:15:30,503 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 6700 transitions. Word has length 90 [2022-07-13 21:15:30,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:30,503 INFO L495 AbstractCegarLoop]: Abstraction has 4815 states and 6700 transitions. [2022-07-13 21:15:30,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 6700 transitions. [2022-07-13 21:15:30,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:30,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:30,506 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] [2022-07-13 21:15:30,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:15:30,506 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1564408046, now seen corresponding path program 1 times [2022-07-13 21:15:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:30,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515022232] [2022-07-13 21:15:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:30,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:30,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:30,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:30,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:30,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:30,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515022232] [2022-07-13 21:15:30,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515022232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:30,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:30,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:30,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545393564] [2022-07-13 21:15:30,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:30,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:30,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:30,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:30,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:30,568 INFO L87 Difference]: Start difference. First operand 4815 states and 6700 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:31,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:31,999 INFO L93 Difference]: Finished difference Result 12322 states and 18250 transitions. [2022-07-13 21:15:31,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:15:31,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 21:15:31,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:32,021 INFO L225 Difference]: With dead ends: 12322 [2022-07-13 21:15:32,021 INFO L226 Difference]: Without dead ends: 9619 [2022-07-13 21:15:32,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:32,030 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 989 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:32,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 1612 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:15:32,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2022-07-13 21:15:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 7251. [2022-07-13 21:15:32,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7251 states, 6136 states have (on average 1.430084745762712) internal successors, (8775), 6196 states have internal predecessors, (8775), 659 states have call successors, (659), 360 states have call predecessors, (659), 454 states have return successors, (1036), 727 states have call predecessors, (1036), 657 states have call successors, (1036) [2022-07-13 21:15:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7251 states to 7251 states and 10470 transitions. [2022-07-13 21:15:32,412 INFO L78 Accepts]: Start accepts. Automaton has 7251 states and 10470 transitions. Word has length 90 [2022-07-13 21:15:32,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:32,412 INFO L495 AbstractCegarLoop]: Abstraction has 7251 states and 10470 transitions. [2022-07-13 21:15:32,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 7251 states and 10470 transitions. [2022-07-13 21:15:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:32,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:32,416 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] [2022-07-13 21:15:32,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:15:32,416 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:32,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1071781872, now seen corresponding path program 1 times [2022-07-13 21:15:32,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:32,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704031847] [2022-07-13 21:15:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:32,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:32,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:32,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:32,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:32,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:32,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704031847] [2022-07-13 21:15:32,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704031847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:32,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:32,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:32,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493415482] [2022-07-13 21:15:32,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:32,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:32,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:32,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:32,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:32,472 INFO L87 Difference]: Start difference. First operand 7251 states and 10470 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:34,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:34,285 INFO L93 Difference]: Finished difference Result 21288 states and 32222 transitions. [2022-07-13 21:15:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:15:34,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 21:15:34,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:34,333 INFO L225 Difference]: With dead ends: 21288 [2022-07-13 21:15:34,333 INFO L226 Difference]: Without dead ends: 16149 [2022-07-13 21:15:34,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:34,352 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 877 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:34,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1655 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:15:34,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16149 states. [2022-07-13 21:15:34,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16149 to 12184. [2022-07-13 21:15:34,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12184 states, 10477 states have (on average 1.46310966879832) internal successors, (15329), 10569 states have internal predecessors, (15329), 1027 states have call successors, (1027), 552 states have call predecessors, (1027), 678 states have return successors, (1922), 1127 states have call predecessors, (1922), 1025 states have call successors, (1922) [2022-07-13 21:15:34,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12184 states to 12184 states and 18278 transitions. [2022-07-13 21:15:34,943 INFO L78 Accepts]: Start accepts. Automaton has 12184 states and 18278 transitions. Word has length 90 [2022-07-13 21:15:34,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:34,943 INFO L495 AbstractCegarLoop]: Abstraction has 12184 states and 18278 transitions. [2022-07-13 21:15:34,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:34,944 INFO L276 IsEmpty]: Start isEmpty. Operand 12184 states and 18278 transitions. [2022-07-13 21:15:34,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:34,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:34,950 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] [2022-07-13 21:15:34,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:15:34,950 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:34,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash 2025722030, now seen corresponding path program 1 times [2022-07-13 21:15:34,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:34,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387948576] [2022-07-13 21:15:34,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:34,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:34,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:35,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:35,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:35,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387948576] [2022-07-13 21:15:35,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387948576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:35,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:35,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:35,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653916093] [2022-07-13 21:15:35,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:35,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:35,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:35,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:35,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:35,053 INFO L87 Difference]: Start difference. First operand 12184 states and 18278 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:37,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:37,296 INFO L93 Difference]: Finished difference Result 38835 states and 60220 transitions. [2022-07-13 21:15:37,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:15:37,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 21:15:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:37,376 INFO L225 Difference]: With dead ends: 38835 [2022-07-13 21:15:37,377 INFO L226 Difference]: Without dead ends: 28763 [2022-07-13 21:15:37,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:37,406 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 910 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:37,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1606 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:15:37,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28763 states. [2022-07-13 21:15:38,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28763 to 22017. [2022-07-13 21:15:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22017 states, 19158 states have (on average 1.485906670842468) internal successors, (28467), 19314 states have internal predecessors, (28467), 1731 states have call successors, (1731), 936 states have call predecessors, (1731), 1126 states have return successors, (4148), 1895 states have call predecessors, (4148), 1729 states have call successors, (4148) [2022-07-13 21:15:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22017 states to 22017 states and 34346 transitions. [2022-07-13 21:15:38,509 INFO L78 Accepts]: Start accepts. Automaton has 22017 states and 34346 transitions. Word has length 90 [2022-07-13 21:15:38,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:38,509 INFO L495 AbstractCegarLoop]: Abstraction has 22017 states and 34346 transitions. [2022-07-13 21:15:38,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:38,510 INFO L276 IsEmpty]: Start isEmpty. Operand 22017 states and 34346 transitions. [2022-07-13 21:15:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:38,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:38,533 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] [2022-07-13 21:15:38,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:15:38,533 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:38,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash 809568304, now seen corresponding path program 1 times [2022-07-13 21:15:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:38,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098510292] [2022-07-13 21:15:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:38,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:38,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:38,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098510292] [2022-07-13 21:15:38,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098510292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:38,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:38,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:38,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320847273] [2022-07-13 21:15:38,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:38,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:38,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:38,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:38,583 INFO L87 Difference]: Start difference. First operand 22017 states and 34346 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:42,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:42,356 INFO L93 Difference]: Finished difference Result 72746 states and 116274 transitions. [2022-07-13 21:15:42,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:15:42,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 21:15:42,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:42,532 INFO L225 Difference]: With dead ends: 72746 [2022-07-13 21:15:42,533 INFO L226 Difference]: Without dead ends: 52841 [2022-07-13 21:15:42,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:42,570 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 870 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:42,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1602 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:15:42,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52841 states. [2022-07-13 21:15:44,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52841 to 41618. [2022-07-13 21:15:44,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41618 states, 36519 states have (on average 1.50072564966182) internal successors, (54805), 36803 states have internal predecessors, (54805), 3075 states have call successors, (3075), 1704 states have call predecessors, (3075), 2022 states have return successors, (9994), 3367 states have call predecessors, (9994), 3073 states have call successors, (9994) [2022-07-13 21:15:44,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41618 states to 41618 states and 67874 transitions. [2022-07-13 21:15:44,572 INFO L78 Accepts]: Start accepts. Automaton has 41618 states and 67874 transitions. Word has length 90 [2022-07-13 21:15:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:44,573 INFO L495 AbstractCegarLoop]: Abstraction has 41618 states and 67874 transitions. [2022-07-13 21:15:44,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:44,573 INFO L276 IsEmpty]: Start isEmpty. Operand 41618 states and 67874 transitions. [2022-07-13 21:15:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:44,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:44,599 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] [2022-07-13 21:15:44,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:15:44,599 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:44,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:44,600 INFO L85 PathProgramCache]: Analyzing trace with hash 77600878, now seen corresponding path program 1 times [2022-07-13 21:15:44,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:44,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163947519] [2022-07-13 21:15:44,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:44,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:44,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:44,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:44,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163947519] [2022-07-13 21:15:44,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163947519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:44,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:44,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:44,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85069086] [2022-07-13 21:15:44,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:44,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:44,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:44,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:44,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:44,670 INFO L87 Difference]: Start difference. First operand 41618 states and 67874 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:50,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:50,760 INFO L93 Difference]: Finished difference Result 110455 states and 176651 transitions. [2022-07-13 21:15:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:15:50,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 21:15:50,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:50,956 INFO L225 Difference]: With dead ends: 110455 [2022-07-13 21:15:50,956 INFO L226 Difference]: Without dead ends: 70950 [2022-07-13 21:15:51,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:15:51,042 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 564 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:51,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1346 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:15:51,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70950 states. [2022-07-13 21:15:53,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70950 to 42389. [2022-07-13 21:15:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42389 states, 37290 states have (on average 1.4903727540895682) internal successors, (55576), 37574 states have internal predecessors, (55576), 3075 states have call successors, (3075), 1704 states have call predecessors, (3075), 2022 states have return successors, (9994), 3367 states have call predecessors, (9994), 3073 states have call successors, (9994) [2022-07-13 21:15:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42389 states to 42389 states and 68645 transitions. [2022-07-13 21:15:53,684 INFO L78 Accepts]: Start accepts. Automaton has 42389 states and 68645 transitions. Word has length 90 [2022-07-13 21:15:53,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:53,684 INFO L495 AbstractCegarLoop]: Abstraction has 42389 states and 68645 transitions. [2022-07-13 21:15:53,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:15:53,685 INFO L276 IsEmpty]: Start isEmpty. Operand 42389 states and 68645 transitions. [2022-07-13 21:15:53,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-13 21:15:53,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:53,708 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] [2022-07-13 21:15:53,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:15:53,708 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:53,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:53,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1338518128, now seen corresponding path program 1 times [2022-07-13 21:15:53,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:53,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601924949] [2022-07-13 21:15:53,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:53,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:15:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:15:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:15:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:15:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:53,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:53,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601924949] [2022-07-13 21:15:53,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601924949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:53,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:53,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:53,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891611430] [2022-07-13 21:15:53,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:53,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:53,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:53,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:53,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:53,795 INFO L87 Difference]: Start difference. First operand 42389 states and 68645 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:16:03,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:03,680 INFO L93 Difference]: Finished difference Result 182432 states and 299479 transitions. [2022-07-13 21:16:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:16:03,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-13 21:16:03,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:04,177 INFO L225 Difference]: With dead ends: 182432 [2022-07-13 21:16:04,177 INFO L226 Difference]: Without dead ends: 142156 [2022-07-13 21:16:04,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-13 21:16:04,330 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 2045 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:04,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 1487 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:16:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142156 states. [2022-07-13 21:16:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142156 to 117987. [2022-07-13 21:16:11,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117987 states, 103678 states have (on average 1.4900846852755647) internal successors, (154489), 104861 states have internal predecessors, (154489), 8683 states have call successors, (8683), 4794 states have call predecessors, (8683), 5624 states have return successors, (28611), 8588 states have call predecessors, (28611), 8681 states have call successors, (28611) [2022-07-13 21:16:12,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117987 states to 117987 states and 191783 transitions. [2022-07-13 21:16:12,273 INFO L78 Accepts]: Start accepts. Automaton has 117987 states and 191783 transitions. Word has length 90 [2022-07-13 21:16:12,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:12,274 INFO L495 AbstractCegarLoop]: Abstraction has 117987 states and 191783 transitions. [2022-07-13 21:16:12,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-13 21:16:12,274 INFO L276 IsEmpty]: Start isEmpty. Operand 117987 states and 191783 transitions. [2022-07-13 21:16:12,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 21:16:12,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:12,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:16:12,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:16:12,450 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:12,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:12,450 INFO L85 PathProgramCache]: Analyzing trace with hash 291045078, now seen corresponding path program 1 times [2022-07-13 21:16:12,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:12,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417042682] [2022-07-13 21:16:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:12,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:12,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:12,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 21:16:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 21:16:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:12,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 21:16:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:12,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:16:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 21:16:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-13 21:16:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:12,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:16:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-13 21:16:12,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:12,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417042682] [2022-07-13 21:16:12,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417042682] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:16:12,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532753704] [2022-07-13 21:16:12,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:12,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:16:12,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:16:12,533 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) [2022-07-13 21:16:12,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:16:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:12,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 21:16:12,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:16:12,891 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 21:16:12,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:16:12,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532753704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:12,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:16:12,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-13 21:16:12,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325984606] [2022-07-13 21:16:12,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:12,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:16:12,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:12,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:16:12,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:16:12,893 INFO L87 Difference]: Start difference. First operand 117987 states and 191783 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)