./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.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 2b9ed7c85c1e945b329b46ea2facde1ef0195f46b3e9e9585453dabdeb816de5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:51:46,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:51:46,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:51:46,904 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:51:46,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:51:46,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:51:46,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:51:46,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:51:46,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:51:46,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:51:46,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:51:46,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:51:46,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:51:46,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:51:46,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:51:46,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:51:46,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:51:46,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:51:46,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:51:46,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:51:46,933 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:51:46,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:51:46,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:51:46,935 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:51:46,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:51:46,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:51:46,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:51:46,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:51:46,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:51:46,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:51:46,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:51:46,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:51:46,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:51:46,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:51:46,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:51:46,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:51:46,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:51:46,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:51:46,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:51:46,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:51:46,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:51:46,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:51:46,954 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:51:46,980 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:51:46,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:51:46,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:51:46,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:51:46,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:51:46,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:51:46,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:51:46,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:51:46,982 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:51:46,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:51:46,983 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:51:46,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:51:46,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:51:46,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:51:46,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:51:46,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:51:46,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:51:46,984 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:51:46,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:51:46,985 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:51:46,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:51:46,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:51:46,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:51:46,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:51:46,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:51:46,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:51:46,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:51:46,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:51:46,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:51:46,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:51:46,987 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:51:46,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:51:46,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:51:46,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b9ed7c85c1e945b329b46ea2facde1ef0195f46b3e9e9585453dabdeb816de5 [2022-07-22 20:51:47,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:51:47,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:51:47,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:51:47,271 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:51:47,271 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:51:47,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c [2022-07-22 20:51:47,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc92b0678/810a08df62804e6fb70c429c82b84717/FLAGaa01e7210 [2022-07-22 20:51:47,661 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:51:47,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.05.cil-1.c [2022-07-22 20:51:47,677 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc92b0678/810a08df62804e6fb70c429c82b84717/FLAGaa01e7210 [2022-07-22 20:51:48,052 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc92b0678/810a08df62804e6fb70c429c82b84717 [2022-07-22 20:51:48,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:51:48,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:51:48,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:51:48,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:51:48,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:51:48,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4518d2be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48, skipping insertion in model container [2022-07-22 20:51:48,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:51:48,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:51:48,225 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.05.cil-1.c[911,924] [2022-07-22 20:51:48,270 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.05.cil-1.c[8416,8429] [2022-07-22 20:51:48,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:51:48,340 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:51:48,349 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.05.cil-1.c[911,924] [2022-07-22 20:51:48,371 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.05.cil-1.c[8416,8429] [2022-07-22 20:51:48,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:51:48,419 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:51:48,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48 WrapperNode [2022-07-22 20:51:48,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:51:48,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:51:48,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:51:48,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:51:48,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,478 INFO L137 Inliner]: procedures = 65, calls = 76, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 672 [2022-07-22 20:51:48,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:51:48,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:51:48,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:51:48,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:51:48,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:51:48,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:51:48,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:51:48,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:51:48,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48" (1/1) ... [2022-07-22 20:51:48,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:51:48,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:51:48,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 20:51:48,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 20:51:48,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:51:48,633 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:51:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:51:48,633 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-22 20:51:48,634 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-22 20:51:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:51:48,634 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:51:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:51:48,634 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:51:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-22 20:51:48,635 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-22 20:51:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:51:48,635 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:51:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:51:48,635 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:51:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-22 20:51:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-22 20:51:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-22 20:51:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-22 20:51:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-22 20:51:48,636 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-22 20:51:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:51:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:51:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:51:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:51:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:51:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-22 20:51:48,637 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-22 20:51:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:51:48,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:51:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:51:48,638 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:51:48,726 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:51:48,727 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:51:49,196 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-22 20:51:49,196 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-22 20:51:49,252 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:51:49,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:51:49,262 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-07-22 20:51:49,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:51:49 BoogieIcfgContainer [2022-07-22 20:51:49,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:51:49,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:51:49,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:51:49,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:51:49,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:51:48" (1/3) ... [2022-07-22 20:51:49,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd2f137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:51:49, skipping insertion in model container [2022-07-22 20:51:49,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:51:48" (2/3) ... [2022-07-22 20:51:49,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd2f137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:51:49, skipping insertion in model container [2022-07-22 20:51:49,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:51:49" (3/3) ... [2022-07-22 20:51:49,271 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.05.cil-1.c [2022-07-22 20:51:49,283 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:51:49,283 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:51:49,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:51:49,337 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@a9fe76c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@165fb851 [2022-07-22 20:51:49,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:51:49,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 272 states have (on average 1.5955882352941178) internal successors, (434), 278 states have internal predecessors, (434), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-22 20:51:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:51:49,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:49,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:49,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:49,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:49,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1519130765, now seen corresponding path program 1 times [2022-07-22 20:51:49,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:49,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148437494] [2022-07-22 20:51:49,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:49,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:49,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:49,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:51:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:51:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:49,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:51:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:49,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:49,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148437494] [2022-07-22 20:51:49,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148437494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:49,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:49,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:51:49,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744547581] [2022-07-22 20:51:49,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:49,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:51:49,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:49,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:51:49,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:49,746 INFO L87 Difference]: Start difference. First operand has 324 states, 272 states have (on average 1.5955882352941178) internal successors, (434), 278 states have internal predecessors, (434), 35 states have call successors, (35), 14 states have call predecessors, (35), 14 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:50,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:50,836 INFO L93 Difference]: Finished difference Result 778 states and 1209 transitions. [2022-07-22 20:51:50,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:51:50,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:51:50,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:50,850 INFO L225 Difference]: With dead ends: 778 [2022-07-22 20:51:50,851 INFO L226 Difference]: Without dead ends: 465 [2022-07-22 20:51:50,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:51:50,858 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 852 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:50,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1715 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:51:50,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-07-22 20:51:50,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 426. [2022-07-22 20:51:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 354 states have (on average 1.4830508474576272) internal successors, (525), 360 states have internal predecessors, (525), 48 states have call successors, (48), 21 states have call predecessors, (48), 22 states have return successors, (51), 47 states have call predecessors, (51), 46 states have call successors, (51) [2022-07-22 20:51:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 624 transitions. [2022-07-22 20:51:50,933 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 624 transitions. Word has length 65 [2022-07-22 20:51:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:50,933 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 624 transitions. [2022-07-22 20:51:50,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 624 transitions. [2022-07-22 20:51:50,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:51:50,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:50,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:50,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:51:50,938 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:50,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1237496501, now seen corresponding path program 1 times [2022-07-22 20:51:50,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:50,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680075724] [2022-07-22 20:51:50,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:50,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:51,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:51,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:51:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:51:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:51,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:51:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:51,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:51,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680075724] [2022-07-22 20:51:51,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680075724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:51,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:51,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:51:51,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945820074] [2022-07-22 20:51:51,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:51,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:51:51,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:51,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:51:51,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:51,103 INFO L87 Difference]: Start difference. First operand 426 states and 624 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:52,082 INFO L93 Difference]: Finished difference Result 823 states and 1190 transitions. [2022-07-22 20:51:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 20:51:52,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:51:52,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:52,091 INFO L225 Difference]: With dead ends: 823 [2022-07-22 20:51:52,091 INFO L226 Difference]: Without dead ends: 614 [2022-07-22 20:51:52,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-22 20:51:52,095 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 1132 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:52,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1686 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:51:52,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2022-07-22 20:51:52,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 538. [2022-07-22 20:51:52,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 444 states have (on average 1.4662162162162162) internal successors, (651), 452 states have internal predecessors, (651), 61 states have call successors, (61), 28 states have call predecessors, (61), 31 states have return successors, (72), 61 states have call predecessors, (72), 59 states have call successors, (72) [2022-07-22 20:51:52,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 784 transitions. [2022-07-22 20:51:52,159 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 784 transitions. Word has length 65 [2022-07-22 20:51:52,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:52,159 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 784 transitions. [2022-07-22 20:51:52,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:52,159 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 784 transitions. [2022-07-22 20:51:52,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:51:52,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:52,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:52,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:51:52,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:52,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:52,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1028884685, now seen corresponding path program 1 times [2022-07-22 20:51:52,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:52,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852353933] [2022-07-22 20:51:52,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:52,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:51:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:51:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:51:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:52,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:52,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852353933] [2022-07-22 20:51:52,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852353933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:52,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:52,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:51:52,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500163036] [2022-07-22 20:51:52,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:52,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:51:52,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:52,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:51:52,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:51:52,338 INFO L87 Difference]: Start difference. First operand 538 states and 784 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 20:51:54,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:54,110 INFO L93 Difference]: Finished difference Result 2084 states and 2982 transitions. [2022-07-22 20:51:54,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:51:54,111 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-22 20:51:54,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:54,124 INFO L225 Difference]: With dead ends: 2084 [2022-07-22 20:51:54,124 INFO L226 Difference]: Without dead ends: 1751 [2022-07-22 20:51:54,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 20:51:54,133 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 2637 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 1723 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2655 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 1723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:54,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2655 Valid, 2294 Invalid, 2331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 1723 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:51:54,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1751 states. [2022-07-22 20:51:54,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1751 to 1591. [2022-07-22 20:51:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1292 states have (on average 1.3893188854489165) internal successors, (1795), 1315 states have internal predecessors, (1795), 171 states have call successors, (171), 111 states have call predecessors, (171), 126 states have return successors, (205), 167 states have call predecessors, (205), 169 states have call successors, (205) [2022-07-22 20:51:54,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 2171 transitions. [2022-07-22 20:51:54,233 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 2171 transitions. Word has length 65 [2022-07-22 20:51:54,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:54,233 INFO L495 AbstractCegarLoop]: Abstraction has 1591 states and 2171 transitions. [2022-07-22 20:51:54,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 20:51:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 2171 transitions. [2022-07-22 20:51:54,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:51:54,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:54,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:54,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:51:54,236 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:54,237 INFO L85 PathProgramCache]: Analyzing trace with hash -591028054, now seen corresponding path program 1 times [2022-07-22 20:51:54,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:54,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927736730] [2022-07-22 20:51:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:54,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:54,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:54,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:54,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:54,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:54,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:51:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:54,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:51:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:54,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:54,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927736730] [2022-07-22 20:51:54,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927736730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:54,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:54,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:51:54,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536676244] [2022-07-22 20:51:54,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:54,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:51:54,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:54,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:51:54,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:51:54,352 INFO L87 Difference]: Start difference. First operand 1591 states and 2171 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:51:55,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:55,186 INFO L93 Difference]: Finished difference Result 3119 states and 4250 transitions. [2022-07-22 20:51:55,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:51:55,186 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:51:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:55,195 INFO L225 Difference]: With dead ends: 3119 [2022-07-22 20:51:55,195 INFO L226 Difference]: Without dead ends: 1739 [2022-07-22 20:51:55,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:51:55,205 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 386 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:55,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 2038 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:51:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2022-07-22 20:51:55,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1631. [2022-07-22 20:51:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1324 states have (on average 1.3753776435045317) internal successors, (1821), 1347 states have internal predecessors, (1821), 171 states have call successors, (171), 111 states have call predecessors, (171), 134 states have return successors, (213), 175 states have call predecessors, (213), 169 states have call successors, (213) [2022-07-22 20:51:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2205 transitions. [2022-07-22 20:51:55,283 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2205 transitions. Word has length 66 [2022-07-22 20:51:55,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:55,283 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2205 transitions. [2022-07-22 20:51:55,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:51:55,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2205 transitions. [2022-07-22 20:51:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:51:55,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:55,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:55,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:51:55,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:55,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:55,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1620387352, now seen corresponding path program 1 times [2022-07-22 20:51:55,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:55,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203753497] [2022-07-22 20:51:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:55,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 20:51:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 20:51:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:55,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:51:55,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:55,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203753497] [2022-07-22 20:51:55,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203753497] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:55,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:55,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:51:55,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391011487] [2022-07-22 20:51:55,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:55,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:51:55,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:51:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:51:55,423 INFO L87 Difference]: Start difference. First operand 1631 states and 2205 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:51:56,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:56,996 INFO L93 Difference]: Finished difference Result 5203 states and 7079 transitions. [2022-07-22 20:51:56,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:51:56,997 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-22 20:51:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:57,007 INFO L225 Difference]: With dead ends: 5203 [2022-07-22 20:51:57,008 INFO L226 Difference]: Without dead ends: 2022 [2022-07-22 20:51:57,017 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 [2022-07-22 20:51:57,018 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 3068 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3086 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:57,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3086 Valid, 2023 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:51:57,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2022-07-22 20:51:57,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1842. [2022-07-22 20:51:57,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1463 states have (on average 1.330827067669173) internal successors, (1947), 1488 states have internal predecessors, (1947), 211 states have call successors, (211), 139 states have call predecessors, (211), 166 states have return successors, (259), 217 states have call predecessors, (259), 209 states have call successors, (259) [2022-07-22 20:51:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2417 transitions. [2022-07-22 20:51:57,108 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2417 transitions. Word has length 66 [2022-07-22 20:51:57,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:57,108 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2417 transitions. [2022-07-22 20:51:57,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:51:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2417 transitions. [2022-07-22 20:51:57,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:51:57,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:57,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:57,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:51:57,112 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:57,112 INFO L85 PathProgramCache]: Analyzing trace with hash -920662268, now seen corresponding path program 1 times [2022-07-22 20:51:57,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:57,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212305712] [2022-07-22 20:51:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:57,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:57,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:57,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:57,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:57,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:51:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:51:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:51:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:57,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:51:57,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:57,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212305712] [2022-07-22 20:51:57,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212305712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:57,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:57,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:51:57,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341229019] [2022-07-22 20:51:57,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:57,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:51:57,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:57,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:51:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:51:57,277 INFO L87 Difference]: Start difference. First operand 1842 states and 2417 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:51:58,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:58,064 INFO L93 Difference]: Finished difference Result 3667 states and 4819 transitions. [2022-07-22 20:51:58,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:51:58,065 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-22 20:51:58,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:58,079 INFO L225 Difference]: With dead ends: 3667 [2022-07-22 20:51:58,080 INFO L226 Difference]: Without dead ends: 2036 [2022-07-22 20:51:58,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:51:58,087 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 560 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:58,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 1785 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:51:58,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-07-22 20:51:58,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1902. [2022-07-22 20:51:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1902 states, 1511 states have (on average 1.3163467902051622) internal successors, (1989), 1536 states have internal predecessors, (1989), 211 states have call successors, (211), 139 states have call predecessors, (211), 178 states have return successors, (271), 229 states have call predecessors, (271), 209 states have call successors, (271) [2022-07-22 20:51:58,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1902 states to 1902 states and 2471 transitions. [2022-07-22 20:51:58,182 INFO L78 Accepts]: Start accepts. Automaton has 1902 states and 2471 transitions. Word has length 91 [2022-07-22 20:51:58,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:58,184 INFO L495 AbstractCegarLoop]: Abstraction has 1902 states and 2471 transitions. [2022-07-22 20:51:58,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:51:58,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1902 states and 2471 transitions. [2022-07-22 20:51:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:51:58,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:58,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:58,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:51:58,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:58,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:58,189 INFO L85 PathProgramCache]: Analyzing trace with hash -476761594, now seen corresponding path program 1 times [2022-07-22 20:51:58,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:58,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038245314] [2022-07-22 20:51:58,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:58,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:58,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:51:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:51:58,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:51:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:58,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:51:58,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:58,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038245314] [2022-07-22 20:51:58,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038245314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:58,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:58,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:51:58,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615559166] [2022-07-22 20:51:58,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:58,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:51:58,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:58,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:51:58,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:51:58,293 INFO L87 Difference]: Start difference. First operand 1902 states and 2471 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:59,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:59,174 INFO L93 Difference]: Finished difference Result 3429 states and 4435 transitions. [2022-07-22 20:51:59,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 20:51:59,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:51:59,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:59,183 INFO L225 Difference]: With dead ends: 3429 [2022-07-22 20:51:59,183 INFO L226 Difference]: Without dead ends: 1976 [2022-07-22 20:51:59,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-22 20:51:59,187 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 915 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:59,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 1640 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:51:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2022-07-22 20:51:59,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1681. [2022-07-22 20:51:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1343 states have (on average 1.3186895011169024) internal successors, (1771), 1363 states have internal predecessors, (1771), 183 states have call successors, (183), 120 states have call predecessors, (183), 153 states have return successors, (231), 199 states have call predecessors, (231), 181 states have call successors, (231) [2022-07-22 20:51:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2185 transitions. [2022-07-22 20:51:59,257 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2185 transitions. Word has length 91 [2022-07-22 20:51:59,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:51:59,258 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2185 transitions. [2022-07-22 20:51:59,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:51:59,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2185 transitions. [2022-07-22 20:51:59,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:51:59,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:51:59,260 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:51:59,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:51:59,260 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:51:59,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:51:59,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1462400452, now seen corresponding path program 1 times [2022-07-22 20:51:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:51:59,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593026579] [2022-07-22 20:51:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:51:59,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:51:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:59,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:51:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:59,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:51:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:59,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:51:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:59,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:51:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:59,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:51:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:59,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:51:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:59,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:51:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:59,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:51:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:51:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:51:59,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:51:59,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593026579] [2022-07-22 20:51:59,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593026579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:51:59,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:51:59,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:51:59,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498791747] [2022-07-22 20:51:59,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:51:59,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:51:59,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:51:59,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:51:59,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:51:59,342 INFO L87 Difference]: Start difference. First operand 1681 states and 2185 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:51:59,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:51:59,850 INFO L93 Difference]: Finished difference Result 4833 states and 6297 transitions. [2022-07-22 20:51:59,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:51:59,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-22 20:51:59,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:51:59,864 INFO L225 Difference]: With dead ends: 4833 [2022-07-22 20:51:59,864 INFO L226 Difference]: Without dead ends: 3364 [2022-07-22 20:51:59,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:51:59,868 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 832 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:51:59,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1446 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:51:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3364 states. [2022-07-22 20:52:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3364 to 3150. [2022-07-22 20:52:00,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3150 states, 2492 states have (on average 1.2837078651685394) internal successors, (3199), 2541 states have internal predecessors, (3199), 344 states have call successors, (344), 233 states have call predecessors, (344), 312 states have return successors, (514), 378 states have call predecessors, (514), 342 states have call successors, (514) [2022-07-22 20:52:00,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 4057 transitions. [2022-07-22 20:52:00,019 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 4057 transitions. Word has length 91 [2022-07-22 20:52:00,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:00,020 INFO L495 AbstractCegarLoop]: Abstraction has 3150 states and 4057 transitions. [2022-07-22 20:52:00,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-22 20:52:00,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 4057 transitions. [2022-07-22 20:52:00,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-22 20:52:00,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:00,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:00,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:52:00,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:00,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:00,024 INFO L85 PathProgramCache]: Analyzing trace with hash 404562374, now seen corresponding path program 1 times [2022-07-22 20:52:00,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:00,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431068327] [2022-07-22 20:52:00,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:00,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:00,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:52:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:52:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:52:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 20:52:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-22 20:52:00,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:00,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431068327] [2022-07-22 20:52:00,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431068327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:00,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:00,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:52:00,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861197004] [2022-07-22 20:52:00,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:00,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:52:00,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:00,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:52:00,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:52:00,095 INFO L87 Difference]: Start difference. First operand 3150 states and 4057 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:00,512 INFO L93 Difference]: Finished difference Result 4734 states and 6041 transitions. [2022-07-22 20:52:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 20:52:00,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-22 20:52:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:00,522 INFO L225 Difference]: With dead ends: 4734 [2022-07-22 20:52:00,522 INFO L226 Difference]: Without dead ends: 1796 [2022-07-22 20:52:00,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:52:00,531 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 674 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:00,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 992 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:52:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2022-07-22 20:52:00,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1681. [2022-07-22 20:52:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1343 states have (on average 1.2911392405063291) internal successors, (1734), 1363 states have internal predecessors, (1734), 183 states have call successors, (183), 120 states have call predecessors, (183), 153 states have return successors, (231), 199 states have call predecessors, (231), 181 states have call successors, (231) [2022-07-22 20:52:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2148 transitions. [2022-07-22 20:52:00,621 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2148 transitions. Word has length 91 [2022-07-22 20:52:00,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:00,621 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2148 transitions. [2022-07-22 20:52:00,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:52:00,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2148 transitions. [2022-07-22 20:52:00,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-22 20:52:00,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:00,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:00,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:52:00,623 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:00,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:00,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1171182892, now seen corresponding path program 1 times [2022-07-22 20:52:00,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:00,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979476996] [2022-07-22 20:52:00,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:00,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:52:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:52:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:52:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-22 20:52:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 20:52:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 20:52:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 20:52:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 20:52:00,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:00,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979476996] [2022-07-22 20:52:00,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979476996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:00,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:00,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:52:00,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199621377] [2022-07-22 20:52:00,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:00,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:52:00,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:00,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:52:00,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:52:00,707 INFO L87 Difference]: Start difference. First operand 1681 states and 2148 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:52:01,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:01,903 INFO L93 Difference]: Finished difference Result 4099 states and 5231 transitions. [2022-07-22 20:52:01,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 20:52:01,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-22 20:52:01,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:01,915 INFO L225 Difference]: With dead ends: 4099 [2022-07-22 20:52:01,916 INFO L226 Difference]: Without dead ends: 2479 [2022-07-22 20:52:01,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-22 20:52:01,921 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 1777 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 1211 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 1211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:01,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 1794 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 1211 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:52:01,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-07-22 20:52:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2302. [2022-07-22 20:52:02,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1810 states have (on average 1.2574585635359117) internal successors, (2276), 1838 states have internal predecessors, (2276), 260 states have call successors, (260), 168 states have call predecessors, (260), 230 states have return successors, (362), 297 states have call predecessors, (362), 258 states have call successors, (362) [2022-07-22 20:52:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 2898 transitions. [2022-07-22 20:52:02,019 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 2898 transitions. Word has length 92 [2022-07-22 20:52:02,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:02,020 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 2898 transitions. [2022-07-22 20:52:02,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:52:02,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 2898 transitions. [2022-07-22 20:52:02,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:02,022 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:02,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:02,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 20:52:02,023 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:02,023 INFO L85 PathProgramCache]: Analyzing trace with hash 972429717, now seen corresponding path program 1 times [2022-07-22 20:52:02,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:02,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606669235] [2022-07-22 20:52:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:02,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:02,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:02,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:02,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:02,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:02,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606669235] [2022-07-22 20:52:02,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606669235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:02,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:02,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:52:02,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690870462] [2022-07-22 20:52:02,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:02,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:52:02,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:02,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:52:02,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:52:02,091 INFO L87 Difference]: Start difference. First operand 2302 states and 2898 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:02,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:02,825 INFO L93 Difference]: Finished difference Result 2562 states and 3308 transitions. [2022-07-22 20:52:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:52:02,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 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 101 [2022-07-22 20:52:02,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:02,834 INFO L225 Difference]: With dead ends: 2562 [2022-07-22 20:52:02,834 INFO L226 Difference]: Without dead ends: 2367 [2022-07-22 20:52:02,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:52:02,836 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 614 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:02,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 878 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:52:02,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2022-07-22 20:52:02,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2302. [2022-07-22 20:52:02,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 1810 states have (on average 1.2569060773480663) internal successors, (2275), 1838 states have internal predecessors, (2275), 260 states have call successors, (260), 168 states have call predecessors, (260), 230 states have return successors, (362), 297 states have call predecessors, (362), 258 states have call successors, (362) [2022-07-22 20:52:02,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 2897 transitions. [2022-07-22 20:52:02,976 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 2897 transitions. Word has length 101 [2022-07-22 20:52:02,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:02,976 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 2897 transitions. [2022-07-22 20:52:02,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:02,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 2897 transitions. [2022-07-22 20:52:02,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:02,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:02,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:02,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 20:52:02,978 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:02,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:02,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1000930007, now seen corresponding path program 1 times [2022-07-22 20:52:02,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:02,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308493479] [2022-07-22 20:52:02,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:02,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:03,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:03,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:03,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308493479] [2022-07-22 20:52:03,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308493479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:03,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:03,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:52:03,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888253041] [2022-07-22 20:52:03,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:03,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:52:03,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:03,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:52:03,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:52:03,068 INFO L87 Difference]: Start difference. First operand 2302 states and 2897 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:04,181 INFO L93 Difference]: Finished difference Result 2814 states and 3704 transitions. [2022-07-22 20:52:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:52:04,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2022-07-22 20:52:04,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:04,190 INFO L225 Difference]: With dead ends: 2814 [2022-07-22 20:52:04,190 INFO L226 Difference]: Without dead ends: 2625 [2022-07-22 20:52:04,191 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 [2022-07-22 20:52:04,192 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 989 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:04,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1170 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:52:04,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2022-07-22 20:52:04,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2496. [2022-07-22 20:52:04,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2496 states, 1983 states have (on average 1.2829046898638428) internal successors, (2544), 2012 states have internal predecessors, (2544), 274 states have call successors, (274), 174 states have call predecessors, (274), 237 states have return successors, (379), 311 states have call predecessors, (379), 272 states have call successors, (379) [2022-07-22 20:52:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2496 states to 2496 states and 3197 transitions. [2022-07-22 20:52:04,329 INFO L78 Accepts]: Start accepts. Automaton has 2496 states and 3197 transitions. Word has length 101 [2022-07-22 20:52:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:04,329 INFO L495 AbstractCegarLoop]: Abstraction has 2496 states and 3197 transitions. [2022-07-22 20:52:04,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2496 states and 3197 transitions. [2022-07-22 20:52:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:04,332 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:04,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:04,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:52:04,332 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash -715954597, now seen corresponding path program 1 times [2022-07-22 20:52:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:04,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332177612] [2022-07-22 20:52:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:04,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:04,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:04,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:04,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:04,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332177612] [2022-07-22 20:52:04,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332177612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:04,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:04,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:04,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559893051] [2022-07-22 20:52:04,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:04,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:04,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:04,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:04,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:04,425 INFO L87 Difference]: Start difference. First operand 2496 states and 3197 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:05,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:05,933 INFO L93 Difference]: Finished difference Result 3274 states and 4421 transitions. [2022-07-22 20:52:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:52:05,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:52:05,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:05,946 INFO L225 Difference]: With dead ends: 3274 [2022-07-22 20:52:05,947 INFO L226 Difference]: Without dead ends: 2891 [2022-07-22 20:52:05,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:52:05,949 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 994 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 1858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:05,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 1846 Invalid, 1858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:52:05,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2891 states. [2022-07-22 20:52:06,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2891 to 2678. [2022-07-22 20:52:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2144 states have (on average 1.3008395522388059) internal successors, (2789), 2174 states have internal predecessors, (2789), 288 states have call successors, (288), 180 states have call predecessors, (288), 244 states have return successors, (395), 326 states have call predecessors, (395), 286 states have call successors, (395) [2022-07-22 20:52:06,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3472 transitions. [2022-07-22 20:52:06,088 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3472 transitions. Word has length 101 [2022-07-22 20:52:06,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:06,089 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3472 transitions. [2022-07-22 20:52:06,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:06,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3472 transitions. [2022-07-22 20:52:06,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:06,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:06,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:06,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:52:06,091 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:06,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:06,092 INFO L85 PathProgramCache]: Analyzing trace with hash 608901597, now seen corresponding path program 1 times [2022-07-22 20:52:06,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:06,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400829545] [2022-07-22 20:52:06,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:06,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:06,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:06,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:06,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:06,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:06,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400829545] [2022-07-22 20:52:06,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400829545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:06,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:06,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:06,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601060365] [2022-07-22 20:52:06,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:06,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:06,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:06,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:06,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:06,187 INFO L87 Difference]: Start difference. First operand 2678 states and 3472 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:07,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:07,746 INFO L93 Difference]: Finished difference Result 3949 states and 5464 transitions. [2022-07-22 20:52:07,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:52:07,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:52:07,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:07,760 INFO L225 Difference]: With dead ends: 3949 [2022-07-22 20:52:07,760 INFO L226 Difference]: Without dead ends: 3384 [2022-07-22 20:52:07,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:52:07,764 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 990 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:07,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1839 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:52:07,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2022-07-22 20:52:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3045. [2022-07-22 20:52:07,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3045 states, 2469 states have (on average 1.3300931551235318) internal successors, (3284), 2501 states have internal predecessors, (3284), 316 states have call successors, (316), 192 states have call predecessors, (316), 258 states have return successors, (431), 356 states have call predecessors, (431), 314 states have call successors, (431) [2022-07-22 20:52:07,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3045 states to 3045 states and 4031 transitions. [2022-07-22 20:52:07,945 INFO L78 Accepts]: Start accepts. Automaton has 3045 states and 4031 transitions. Word has length 101 [2022-07-22 20:52:07,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:07,946 INFO L495 AbstractCegarLoop]: Abstraction has 3045 states and 4031 transitions. [2022-07-22 20:52:07,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:07,946 INFO L276 IsEmpty]: Start isEmpty. Operand 3045 states and 4031 transitions. [2022-07-22 20:52:07,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:07,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:07,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:07,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:52:07,948 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:07,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:07,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2119307749, now seen corresponding path program 1 times [2022-07-22 20:52:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:07,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461491873] [2022-07-22 20:52:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:07,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:08,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:08,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:08,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:08,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461491873] [2022-07-22 20:52:08,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461491873] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:08,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:08,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:08,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862168156] [2022-07-22 20:52:08,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:08,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:08,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:08,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:08,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:08,046 INFO L87 Difference]: Start difference. First operand 3045 states and 4031 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:09,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:09,494 INFO L93 Difference]: Finished difference Result 5258 states and 7483 transitions. [2022-07-22 20:52:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:52:09,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:52:09,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:09,510 INFO L225 Difference]: With dead ends: 5258 [2022-07-22 20:52:09,510 INFO L226 Difference]: Without dead ends: 4326 [2022-07-22 20:52:09,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:52:09,516 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 989 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:09,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1834 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:52:09,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2022-07-22 20:52:09,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 3782. [2022-07-22 20:52:09,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 3122 states have (on average 1.3702754644458681) internal successors, (4278), 3158 states have internal predecessors, (4278), 372 states have call successors, (372), 216 states have call predecessors, (372), 286 states have return successors, (509), 416 states have call predecessors, (509), 370 states have call successors, (509) [2022-07-22 20:52:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 5159 transitions. [2022-07-22 20:52:09,729 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 5159 transitions. Word has length 101 [2022-07-22 20:52:09,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:09,730 INFO L495 AbstractCegarLoop]: Abstraction has 3782 states and 5159 transitions. [2022-07-22 20:52:09,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:09,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 5159 transitions. [2022-07-22 20:52:09,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:09,732 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:09,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:09,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:52:09,733 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:09,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:09,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1117821469, now seen corresponding path program 1 times [2022-07-22 20:52:09,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:09,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475400693] [2022-07-22 20:52:09,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:09,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:09,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:09,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475400693] [2022-07-22 20:52:09,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475400693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:09,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:09,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:09,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334394121] [2022-07-22 20:52:09,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:09,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:09,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:09,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:09,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:09,816 INFO L87 Difference]: Start difference. First operand 3782 states and 5159 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:11,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:11,386 INFO L93 Difference]: Finished difference Result 7877 states and 11541 transitions. [2022-07-22 20:52:11,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:52:11,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:52:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:11,432 INFO L225 Difference]: With dead ends: 7877 [2022-07-22 20:52:11,432 INFO L226 Difference]: Without dead ends: 6208 [2022-07-22 20:52:11,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:52:11,438 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 988 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 1823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:11,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 1829 Invalid, 1823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:52:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6208 states. [2022-07-22 20:52:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6208 to 5263. [2022-07-22 20:52:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 4435 states have (on average 1.4151071025930102) internal successors, (6276), 4479 states have internal predecessors, (6276), 484 states have call successors, (484), 264 states have call predecessors, (484), 342 states have return successors, (683), 536 states have call predecessors, (683), 482 states have call successors, (683) [2022-07-22 20:52:11,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 7443 transitions. [2022-07-22 20:52:11,729 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 7443 transitions. Word has length 101 [2022-07-22 20:52:11,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:11,729 INFO L495 AbstractCegarLoop]: Abstraction has 5263 states and 7443 transitions. [2022-07-22 20:52:11,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:11,729 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 7443 transitions. [2022-07-22 20:52:11,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:11,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:11,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:11,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:52:11,733 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:11,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:11,734 INFO L85 PathProgramCache]: Analyzing trace with hash -24680997, now seen corresponding path program 1 times [2022-07-22 20:52:11,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:11,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984837737] [2022-07-22 20:52:11,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:11,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:11,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:11,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:11,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:11,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:11,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:11,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:11,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984837737] [2022-07-22 20:52:11,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984837737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:11,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:11,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:11,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003599086] [2022-07-22 20:52:11,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:11,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:11,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:11,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:11,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:11,816 INFO L87 Difference]: Start difference. First operand 5263 states and 7443 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:13,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:13,794 INFO L93 Difference]: Finished difference Result 14380 states and 21609 transitions. [2022-07-22 20:52:13,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:52:13,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:52:13,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:13,828 INFO L225 Difference]: With dead ends: 14380 [2022-07-22 20:52:13,829 INFO L226 Difference]: Without dead ends: 11230 [2022-07-22 20:52:13,844 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 [2022-07-22 20:52:13,845 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 1083 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 1798 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:13,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 1454 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1798 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:52:13,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11230 states. [2022-07-22 20:52:14,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11230 to 8192. [2022-07-22 20:52:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8192 states, 7044 states have (on average 1.4568427030096536) internal successors, (10262), 7104 states have internal predecessors, (10262), 692 states have call successors, (692), 360 states have call predecessors, (692), 454 states have return successors, (1069), 760 states have call predecessors, (1069), 690 states have call successors, (1069) [2022-07-22 20:52:14,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8192 states to 8192 states and 12023 transitions. [2022-07-22 20:52:14,300 INFO L78 Accepts]: Start accepts. Automaton has 8192 states and 12023 transitions. Word has length 101 [2022-07-22 20:52:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:14,300 INFO L495 AbstractCegarLoop]: Abstraction has 8192 states and 12023 transitions. [2022-07-22 20:52:14,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 8192 states and 12023 transitions. [2022-07-22 20:52:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:14,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:14,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:14,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:52:14,307 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:14,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash 215558749, now seen corresponding path program 1 times [2022-07-22 20:52:14,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:14,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602265884] [2022-07-22 20:52:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:14,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:14,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:14,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:14,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:14,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:14,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:14,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602265884] [2022-07-22 20:52:14,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602265884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:14,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:14,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:14,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637202220] [2022-07-22 20:52:14,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:14,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:14,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:14,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:14,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:14,379 INFO L87 Difference]: Start difference. First operand 8192 states and 12023 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:16,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:16,932 INFO L93 Difference]: Finished difference Result 25595 states and 39247 transitions. [2022-07-22 20:52:16,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:52:16,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:52:16,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:17,018 INFO L225 Difference]: With dead ends: 25595 [2022-07-22 20:52:17,019 INFO L226 Difference]: Without dead ends: 19516 [2022-07-22 20:52:17,055 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 [2022-07-22 20:52:17,056 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 1159 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 1689 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1189 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:17,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1189 Valid, 1805 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1689 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:52:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19516 states. [2022-07-22 20:52:17,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19516 to 13873. [2022-07-22 20:52:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13873 states, 12101 states have (on average 1.4868192711346169) internal successors, (17992), 12193 states have internal predecessors, (17992), 1092 states have call successors, (1092), 552 states have call predecessors, (1092), 678 states have return successors, (1987), 1192 states have call predecessors, (1987), 1090 states have call successors, (1987) [2022-07-22 20:52:17,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13873 states to 13873 states and 21071 transitions. [2022-07-22 20:52:17,931 INFO L78 Accepts]: Start accepts. Automaton has 13873 states and 21071 transitions. Word has length 101 [2022-07-22 20:52:17,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:17,933 INFO L495 AbstractCegarLoop]: Abstraction has 13873 states and 21071 transitions. [2022-07-22 20:52:17,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:17,933 INFO L276 IsEmpty]: Start isEmpty. Operand 13873 states and 21071 transitions. [2022-07-22 20:52:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:17,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:17,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:17,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 20:52:17,945 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:17,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:17,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1054592411, now seen corresponding path program 1 times [2022-07-22 20:52:17,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:17,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939650783] [2022-07-22 20:52:17,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:17,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:17,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:17,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:18,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:18,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:18,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:18,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:18,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939650783] [2022-07-22 20:52:18,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939650783] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:18,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:18,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:18,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460967662] [2022-07-22 20:52:18,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:18,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:18,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:18,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:18,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:18,028 INFO L87 Difference]: Start difference. First operand 13873 states and 21071 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:21,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:21,334 INFO L93 Difference]: Finished difference Result 46954 states and 73429 transitions. [2022-07-22 20:52:21,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:52:21,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:52:21,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:21,502 INFO L225 Difference]: With dead ends: 46954 [2022-07-22 20:52:21,502 INFO L226 Difference]: Without dead ends: 35194 [2022-07-22 20:52:21,554 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 [2022-07-22 20:52:21,555 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 1021 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1878 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:21,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 1862 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1878 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:52:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35194 states. [2022-07-22 20:52:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35194 to 25362. [2022-07-22 20:52:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25362 states, 22374 states have (on average 1.5079109680879592) internal successors, (33738), 22530 states have internal predecessors, (33738), 1860 states have call successors, (1860), 936 states have call predecessors, (1860), 1126 states have return successors, (4277), 2024 states have call predecessors, (4277), 1858 states have call successors, (4277) [2022-07-22 20:52:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25362 states to 25362 states and 39875 transitions. [2022-07-22 20:52:23,128 INFO L78 Accepts]: Start accepts. Automaton has 25362 states and 39875 transitions. Word has length 101 [2022-07-22 20:52:23,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:23,129 INFO L495 AbstractCegarLoop]: Abstraction has 25362 states and 39875 transitions. [2022-07-22 20:52:23,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:23,129 INFO L276 IsEmpty]: Start isEmpty. Operand 25362 states and 39875 transitions. [2022-07-22 20:52:23,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:23,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:23,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:23,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:52:23,153 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:23,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:23,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1081658013, now seen corresponding path program 1 times [2022-07-22 20:52:23,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:23,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456878091] [2022-07-22 20:52:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:23,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:23,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:23,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:23,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:23,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:23,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456878091] [2022-07-22 20:52:23,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456878091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:23,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:23,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:23,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337124519] [2022-07-22 20:52:23,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:23,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:23,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:23,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:23,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:23,242 INFO L87 Difference]: Start difference. First operand 25362 states and 39875 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:28,113 INFO L93 Difference]: Finished difference Result 86983 states and 139735 transitions. [2022-07-22 20:52:28,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:52:28,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:52:28,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:28,395 INFO L225 Difference]: With dead ends: 86983 [2022-07-22 20:52:28,395 INFO L226 Difference]: Without dead ends: 63734 [2022-07-22 20:52:28,472 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 [2022-07-22 20:52:28,474 INFO L413 NwaCegarLoop]: 585 mSDtfsCounter, 1040 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:28,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 1793 Invalid, 1779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:52:28,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63734 states. [2022-07-22 20:52:31,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63734 to 48404. [2022-07-22 20:52:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48404 states, 43048 states have (on average 1.5227188254971196) internal successors, (65550), 43332 states have internal predecessors, (65550), 3332 states have call successors, (3332), 1704 states have call predecessors, (3332), 2022 states have return successors, (10251), 3624 states have call predecessors, (10251), 3330 states have call successors, (10251) [2022-07-22 20:52:31,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48404 states to 48404 states and 79133 transitions. [2022-07-22 20:52:31,360 INFO L78 Accepts]: Start accepts. Automaton has 48404 states and 79133 transitions. Word has length 101 [2022-07-22 20:52:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:31,361 INFO L495 AbstractCegarLoop]: Abstraction has 48404 states and 79133 transitions. [2022-07-22 20:52:31,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:31,361 INFO L276 IsEmpty]: Start isEmpty. Operand 48404 states and 79133 transitions. [2022-07-22 20:52:31,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:31,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:31,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:31,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:52:31,397 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:31,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:31,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1479204833, now seen corresponding path program 1 times [2022-07-22 20:52:31,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:31,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829544918] [2022-07-22 20:52:31,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:31,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:31,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:31,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:31,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:31,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:31,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829544918] [2022-07-22 20:52:31,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829544918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:31,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:31,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:31,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639299423] [2022-07-22 20:52:31,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:31,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:31,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:31,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:31,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:31,484 INFO L87 Difference]: Start difference. First operand 48404 states and 79133 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:52:39,828 INFO L93 Difference]: Finished difference Result 166727 states and 277487 transitions. [2022-07-22 20:52:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:52:39,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:52:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:52:40,380 INFO L225 Difference]: With dead ends: 166727 [2022-07-22 20:52:40,381 INFO L226 Difference]: Without dead ends: 120436 [2022-07-22 20:52:40,525 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 [2022-07-22 20:52:40,526 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 985 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:52:40,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1801 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:52:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120436 states. [2022-07-22 20:52:46,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120436 to 94357. [2022-07-22 20:52:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94357 states, 84393 states have (on average 1.5320701953953526) internal successors, (129296), 84933 states have internal predecessors, (129296), 6148 states have call successors, (6148), 3240 states have call predecessors, (6148), 3814 states have return successors, (26445), 6696 states have call predecessors, (26445), 6146 states have call successors, (26445) [2022-07-22 20:52:46,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94357 states to 94357 states and 161889 transitions. [2022-07-22 20:52:46,891 INFO L78 Accepts]: Start accepts. Automaton has 94357 states and 161889 transitions. Word has length 101 [2022-07-22 20:52:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:52:46,891 INFO L495 AbstractCegarLoop]: Abstraction has 94357 states and 161889 transitions. [2022-07-22 20:52:46,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:52:46,892 INFO L276 IsEmpty]: Start isEmpty. Operand 94357 states and 161889 transitions. [2022-07-22 20:52:46,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 20:52:46,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:52:46,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:52:46,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:52:46,950 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:52:46,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:52:46,950 INFO L85 PathProgramCache]: Analyzing trace with hash -591981987, now seen corresponding path program 1 times [2022-07-22 20:52:46,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:52:46,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268207359] [2022-07-22 20:52:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:52:46,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:52:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:52:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 20:52:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:46,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 20:52:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:47,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 20:52:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:47,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 20:52:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:52:47,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:52:47,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:52:47,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268207359] [2022-07-22 20:52:47,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268207359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:52:47,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:52:47,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:52:47,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362205943] [2022-07-22 20:52:47,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:52:47,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:52:47,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:52:47,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:52:47,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:52:47,032 INFO L87 Difference]: Start difference. First operand 94357 states and 161889 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:53:01,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:53:01,636 INFO L93 Difference]: Finished difference Result 259607 states and 429231 transitions. [2022-07-22 20:53:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:53:01,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 101 [2022-07-22 20:53:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:53:02,296 INFO L225 Difference]: With dead ends: 259607 [2022-07-22 20:53:02,297 INFO L226 Difference]: Without dead ends: 167364