./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.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_2.cil-1+token_ring.06.cil-2.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 0becd5109c9f10d4cd495bd258560ff3ae7f6a1dd143c8dd06621d725fa7a35e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:47:51,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:47:51,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:47:51,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:47:51,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:47:51,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:47:51,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:47:51,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:47:51,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:47:51,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:47:51,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:47:51,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:47:51,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:47:51,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:47:51,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:47:51,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:47:51,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:47:51,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:47:51,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:47:51,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:47:51,204 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:47:51,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:47:51,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:47:51,206 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:47:51,207 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:47:51,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:47:51,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:47:51,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:47:51,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:47:51,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:47:51,214 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:47:51,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:47:51,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:47:51,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:47:51,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:47:51,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:47:51,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:47:51,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:47:51,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:47:51,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:47:51,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:47:51,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:47:51,221 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:47:51,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:47:51,244 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:47:51,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:47:51,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:47:51,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:47:51,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:47:51,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:47:51,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:47:51,246 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:47:51,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:47:51,247 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:47:51,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:47:51,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:47:51,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:47:51,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:47:51,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:47:51,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:47:51,248 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:47:51,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:47:51,250 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:47:51,250 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:47:51,250 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:47:51,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:47:51,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:47:51,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:47:51,251 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:47:51,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:47:51,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:47:51,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:47:51,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:47:51,251 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:47:51,252 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:47:51,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:47:51,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0becd5109c9f10d4cd495bd258560ff3ae7f6a1dd143c8dd06621d725fa7a35e [2022-07-22 20:47:51,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:47:51,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:47:51,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:47:51,463 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:47:51,468 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:47:51,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2022-07-22 20:47:51,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39108b93/548a04ccd8a341d9b982ee110e794ec7/FLAG37e8d6f72 [2022-07-22 20:47:51,934 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:47:51,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2022-07-22 20:47:51,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39108b93/548a04ccd8a341d9b982ee110e794ec7/FLAG37e8d6f72 [2022-07-22 20:47:51,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d39108b93/548a04ccd8a341d9b982ee110e794ec7 [2022-07-22 20:47:51,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:47:51,971 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:47:51,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:47:51,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:47:51,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:47:51,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:47:51" (1/1) ... [2022-07-22 20:47:51,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145300d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:51, skipping insertion in model container [2022-07-22 20:47:51,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:47:51" (1/1) ... [2022-07-22 20:47:51,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:47:52,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:47:52,161 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_2.cil-1+token_ring.06.cil-2.c[914,927] [2022-07-22 20:47:52,216 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_2.cil-1+token_ring.06.cil-2.c[7115,7128] [2022-07-22 20:47:52,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:47:52,291 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:47:52,300 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_2.cil-1+token_ring.06.cil-2.c[914,927] [2022-07-22 20:47:52,326 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_2.cil-1+token_ring.06.cil-2.c[7115,7128] [2022-07-22 20:47:52,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:47:52,366 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:47:52,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52 WrapperNode [2022-07-22 20:47:52,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:47:52,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:47:52,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:47:52,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:47:52,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52" (1/1) ... [2022-07-22 20:47:52,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52" (1/1) ... [2022-07-22 20:47:52,428 INFO L137 Inliner]: procedures = 65, calls = 75, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 692 [2022-07-22 20:47:52,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:47:52,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:47:52,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:47:52,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:47:52,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52" (1/1) ... [2022-07-22 20:47:52,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52" (1/1) ... [2022-07-22 20:47:52,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52" (1/1) ... [2022-07-22 20:47:52,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52" (1/1) ... [2022-07-22 20:47:52,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52" (1/1) ... [2022-07-22 20:47:52,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52" (1/1) ... [2022-07-22 20:47:52,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52" (1/1) ... [2022-07-22 20:47:52,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:47:52,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:47:52,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:47:52,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:47:52,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52" (1/1) ... [2022-07-22 20:47:52,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:47:52,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:47:52,508 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 20:47:52,513 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 20:47:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:47:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:47:52,534 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:47:52,534 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-22 20:47:52,534 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-22 20:47:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:47:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:47:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:47:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:47:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-22 20:47:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-22 20:47:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:47:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:47:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:47:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:47:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-22 20:47:52,535 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-22 20:47:52,535 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-22 20:47:52,536 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-22 20:47:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-22 20:47:52,536 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-22 20:47:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:47:52,536 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:47:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:47:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:47:52,536 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:47:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-22 20:47:52,536 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-22 20:47:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:47:52,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:47:52,536 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:47:52,537 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:47:52,651 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:47:52,654 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:47:53,175 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:47:53,186 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:47:53,187 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-22 20:47:53,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:47:53 BoogieIcfgContainer [2022-07-22 20:47:53,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:47:53,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:47:53,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:47:53,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:47:53,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:47:51" (1/3) ... [2022-07-22 20:47:53,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266e3e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:47:53, skipping insertion in model container [2022-07-22 20:47:53,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:47:52" (2/3) ... [2022-07-22 20:47:53,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266e3e7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:47:53, skipping insertion in model container [2022-07-22 20:47:53,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:47:53" (3/3) ... [2022-07-22 20:47:53,196 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.06.cil-2.c [2022-07-22 20:47:53,205 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:47:53,206 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:47:53,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:47:53,251 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@6f08a629, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2d6cc68e [2022-07-22 20:47:53,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:47:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 333 states, 282 states have (on average 1.6063829787234043) internal successors, (453), 288 states have internal predecessors, (453), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-22 20:47:53,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:47:53,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:53,263 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 20:47:53,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:53,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:53,268 INFO L85 PathProgramCache]: Analyzing trace with hash 751120114, now seen corresponding path program 1 times [2022-07-22 20:47:53,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:53,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171992160] [2022-07-22 20:47:53,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:53,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:53,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:53,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:53,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:53,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:53,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:53,559 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 20:47:53,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:53,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171992160] [2022-07-22 20:47:53,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171992160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:53,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:53,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:47:53,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303352901] [2022-07-22 20:47:53,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:53,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:47:53,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:53,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:47:53,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:53,591 INFO L87 Difference]: Start difference. First operand has 333 states, 282 states have (on average 1.6063829787234043) internal successors, (453), 288 states have internal predecessors, (453), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 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 20:47:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:54,412 INFO L93 Difference]: Finished difference Result 779 states and 1212 transitions. [2022-07-22 20:47:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:47:54,415 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 20:47:54,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:54,423 INFO L225 Difference]: With dead ends: 779 [2022-07-22 20:47:54,423 INFO L226 Difference]: Without dead ends: 458 [2022-07-22 20:47:54,427 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 20:47:54,429 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 846 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:54,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1630 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:47:54,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-07-22 20:47:54,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 419. [2022-07-22 20:47:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 350 states have (on average 1.4857142857142858) internal successors, (520), 356 states have internal predecessors, (520), 45 states have call successors, (45), 21 states have call predecessors, (45), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2022-07-22 20:47:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 613 transitions. [2022-07-22 20:47:54,479 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 613 transitions. Word has length 65 [2022-07-22 20:47:54,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:54,480 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 613 transitions. [2022-07-22 20:47:54,480 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 20:47:54,480 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 613 transitions. [2022-07-22 20:47:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:47:54,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:54,483 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 20:47:54,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:47:54,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:54,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:54,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1864958542, now seen corresponding path program 1 times [2022-07-22 20:47:54,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:54,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761975900] [2022-07-22 20:47:54,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:54,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:54,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:54,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:54,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:54,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:54,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:54,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:54,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:54,568 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 20:47:54,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:54,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761975900] [2022-07-22 20:47:54,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761975900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:54,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:54,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:47:54,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117296761] [2022-07-22 20:47:54,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:54,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:47:54,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:54,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:47:54,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:54,570 INFO L87 Difference]: Start difference. First operand 419 states and 613 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 20:47:55,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:55,293 INFO L93 Difference]: Finished difference Result 766 states and 1090 transitions. [2022-07-22 20:47:55,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 20:47:55,293 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 20:47:55,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:55,297 INFO L225 Difference]: With dead ends: 766 [2022-07-22 20:47:55,297 INFO L226 Difference]: Without dead ends: 589 [2022-07-22 20:47:55,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-22 20:47:55,299 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1188 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:55,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 1618 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:47:55,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-07-22 20:47:55,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 515. [2022-07-22 20:47:55,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 426 states have (on average 1.4647887323943662) internal successors, (624), 434 states have internal predecessors, (624), 56 states have call successors, (56), 28 states have call predecessors, (56), 31 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2022-07-22 20:47:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 747 transitions. [2022-07-22 20:47:55,326 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 747 transitions. Word has length 65 [2022-07-22 20:47:55,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:55,326 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 747 transitions. [2022-07-22 20:47:55,326 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 20:47:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 747 transitions. [2022-07-22 20:47:55,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:47:55,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:55,329 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 20:47:55,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:47:55,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:55,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:55,329 INFO L85 PathProgramCache]: Analyzing trace with hash 401422644, now seen corresponding path program 1 times [2022-07-22 20:47:55,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:55,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957850699] [2022-07-22 20:47:55,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:55,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:55,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:55,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:55,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:55,433 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 20:47:55,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:55,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957850699] [2022-07-22 20:47:55,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957850699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:55,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:55,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 20:47:55,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461083614] [2022-07-22 20:47:55,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:55,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:47:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:55,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:47:55,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:47:55,434 INFO L87 Difference]: Start difference. First operand 515 states and 747 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 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 20:47:56,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:56,653 INFO L93 Difference]: Finished difference Result 1847 states and 2593 transitions. [2022-07-22 20:47:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:47:56,654 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), 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 65 [2022-07-22 20:47:56,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:56,660 INFO L225 Difference]: With dead ends: 1847 [2022-07-22 20:47:56,660 INFO L226 Difference]: Without dead ends: 1562 [2022-07-22 20:47:56,661 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 20:47:56,662 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 2860 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2874 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 2085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:56,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2874 Valid, 1881 Invalid, 2085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:47:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-07-22 20:47:56,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 1401. [2022-07-22 20:47:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1129 states have (on average 1.3808680248007086) internal successors, (1559), 1152 states have internal predecessors, (1559), 144 states have call successors, (144), 111 states have call predecessors, (144), 126 states have return successors, (178), 140 states have call predecessors, (178), 142 states have call successors, (178) [2022-07-22 20:47:56,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1881 transitions. [2022-07-22 20:47:56,714 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1881 transitions. Word has length 65 [2022-07-22 20:47:56,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:56,714 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1881 transitions. [2022-07-22 20:47:56,714 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), 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 20:47:56,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1881 transitions. [2022-07-22 20:47:56,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:47:56,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:56,716 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 20:47:56,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:47:56,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:56,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:56,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1452871733, now seen corresponding path program 1 times [2022-07-22 20:47:56,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:56,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338884812] [2022-07-22 20:47:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:56,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:56,828 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 20:47:56,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:56,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338884812] [2022-07-22 20:47:56,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338884812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:56,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:56,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:47:56,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242401562] [2022-07-22 20:47:56,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:56,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:47:56,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:56,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:47:56,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:47:56,829 INFO L87 Difference]: Start difference. First operand 1401 states and 1881 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 20:47:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:57,518 INFO L93 Difference]: Finished difference Result 2730 states and 3631 transitions. [2022-07-22 20:47:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:47:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 65 [2022-07-22 20:47:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:57,524 INFO L225 Difference]: With dead ends: 2730 [2022-07-22 20:47:57,524 INFO L226 Difference]: Without dead ends: 1565 [2022-07-22 20:47:57,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:47:57,527 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 404 mSDsluCounter, 1617 mSDsCounter, 0 mSdLazyCounter, 1166 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:57,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 2084 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1166 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:47:57,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2022-07-22 20:47:57,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1431. [2022-07-22 20:47:57,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1153 states have (on average 1.3660017346053772) internal successors, (1575), 1176 states have internal predecessors, (1575), 144 states have call successors, (144), 111 states have call predecessors, (144), 132 states have return successors, (184), 146 states have call predecessors, (184), 142 states have call successors, (184) [2022-07-22 20:47:57,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1903 transitions. [2022-07-22 20:47:57,591 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1903 transitions. Word has length 65 [2022-07-22 20:47:57,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:57,591 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 1903 transitions. [2022-07-22 20:47:57,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 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 20:47:57,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1903 transitions. [2022-07-22 20:47:57,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:47:57,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:57,593 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 20:47:57,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:47:57,593 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:57,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:57,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1455892169, now seen corresponding path program 1 times [2022-07-22 20:47:57,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:57,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766037931] [2022-07-22 20:47:57,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:57,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:57,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:57,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:57,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:57,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:57,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:57,704 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 20:47:57,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:57,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766037931] [2022-07-22 20:47:57,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766037931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:57,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:57,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:47:57,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043931352] [2022-07-22 20:47:57,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:57,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:47:57,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:57,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:47:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:47:57,708 INFO L87 Difference]: Start difference. First operand 1431 states and 1903 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 20:47:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:58,416 INFO L93 Difference]: Finished difference Result 2780 states and 3605 transitions. [2022-07-22 20:47:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 20:47:58,416 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 20:47:58,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:58,421 INFO L225 Difference]: With dead ends: 2780 [2022-07-22 20:47:58,422 INFO L226 Difference]: Without dead ends: 1808 [2022-07-22 20:47:58,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-07-22 20:47:58,424 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1197 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:58,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1406 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:47:58,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-07-22 20:47:58,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1373. [2022-07-22 20:47:58,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1111 states have (on average 1.3636363636363635) internal successors, (1515), 1129 states have internal predecessors, (1515), 138 states have call successors, (138), 106 states have call predecessors, (138), 122 states have return successors, (169), 139 states have call predecessors, (169), 136 states have call successors, (169) [2022-07-22 20:47:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1822 transitions. [2022-07-22 20:47:58,465 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1822 transitions. Word has length 65 [2022-07-22 20:47:58,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:58,465 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 1822 transitions. [2022-07-22 20:47:58,465 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 20:47:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1822 transitions. [2022-07-22 20:47:58,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:47:58,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:58,466 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 20:47:58,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:47:58,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:58,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:58,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1589905675, now seen corresponding path program 1 times [2022-07-22 20:47:58,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:58,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840605494] [2022-07-22 20:47:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:58,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,519 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 20:47:58,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:58,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840605494] [2022-07-22 20:47:58,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840605494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:58,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:58,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:47:58,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855764123] [2022-07-22 20:47:58,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:58,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:47:58,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:58,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:47:58,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:47:58,521 INFO L87 Difference]: Start difference. First operand 1373 states and 1822 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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 20:47:58,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:58,873 INFO L93 Difference]: Finished difference Result 3727 states and 4840 transitions. [2022-07-22 20:47:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:47:58,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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 20:47:58,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:58,881 INFO L225 Difference]: With dead ends: 3727 [2022-07-22 20:47:58,881 INFO L226 Difference]: Without dead ends: 2591 [2022-07-22 20:47:58,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:47:58,883 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1155 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:58,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 1149 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:47:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2022-07-22 20:47:58,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2471. [2022-07-22 20:47:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 1950 states have (on average 1.303076923076923) internal successors, (2541), 1992 states have internal predecessors, (2541), 268 states have call successors, (268), 205 states have call predecessors, (268), 251 states have return successors, (381), 276 states have call predecessors, (381), 266 states have call successors, (381) [2022-07-22 20:47:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3190 transitions. [2022-07-22 20:47:58,957 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3190 transitions. Word has length 65 [2022-07-22 20:47:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:58,958 INFO L495 AbstractCegarLoop]: Abstraction has 2471 states and 3190 transitions. [2022-07-22 20:47:58,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 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 20:47:58,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3190 transitions. [2022-07-22 20:47:58,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:47:58,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:58,959 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 20:47:58,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:47:58,959 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:58,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1359463327, now seen corresponding path program 1 times [2022-07-22 20:47:58,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:58,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960536904] [2022-07-22 20:47:58,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:58,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:58,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,003 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 20:47:59,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:59,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960536904] [2022-07-22 20:47:59,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960536904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:59,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:59,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:47:59,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616097495] [2022-07-22 20:47:59,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:59,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:47:59,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:59,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:47:59,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:47:59,005 INFO L87 Difference]: Start difference. First operand 2471 states and 3190 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:47:59,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:47:59,476 INFO L93 Difference]: Finished difference Result 5865 states and 7498 transitions. [2022-07-22 20:47:59,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:47:59,476 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:47:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:47:59,489 INFO L225 Difference]: With dead ends: 5865 [2022-07-22 20:47:59,489 INFO L226 Difference]: Without dead ends: 3636 [2022-07-22 20:47:59,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:47:59,495 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 575 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:47:59,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1334 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:47:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2022-07-22 20:47:59,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3305. [2022-07-22 20:47:59,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3305 states, 2595 states have (on average 1.2882466281310212) internal successors, (3343), 2644 states have internal predecessors, (3343), 364 states have call successors, (364), 285 states have call predecessors, (364), 344 states have return successors, (500), 378 states have call predecessors, (500), 362 states have call successors, (500) [2022-07-22 20:47:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3305 states to 3305 states and 4207 transitions. [2022-07-22 20:47:59,637 INFO L78 Accepts]: Start accepts. Automaton has 3305 states and 4207 transitions. Word has length 66 [2022-07-22 20:47:59,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:47:59,638 INFO L495 AbstractCegarLoop]: Abstraction has 3305 states and 4207 transitions. [2022-07-22 20:47:59,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:47:59,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3305 states and 4207 transitions. [2022-07-22 20:47:59,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 20:47:59,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:47:59,640 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] [2022-07-22 20:47:59,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:47:59,640 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:47:59,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:47:59,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1540190304, now seen corresponding path program 1 times [2022-07-22 20:47:59,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:47:59,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477216221] [2022-07-22 20:47:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:47:59,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:47:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:47:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:47:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:47:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:47:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:47:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:47:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:47:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:47:59,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:47:59,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:47:59,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477216221] [2022-07-22 20:47:59,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477216221] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:47:59,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:47:59,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:47:59,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646771680] [2022-07-22 20:47:59,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:47:59,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:47:59,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:47:59,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:47:59,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:47:59,694 INFO L87 Difference]: Start difference. First operand 3305 states and 4207 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:00,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:00,041 INFO L93 Difference]: Finished difference Result 7291 states and 9206 transitions. [2022-07-22 20:48:00,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:48:00,042 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-22 20:48:00,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:00,062 INFO L225 Difference]: With dead ends: 7291 [2022-07-22 20:48:00,062 INFO L226 Difference]: Without dead ends: 4226 [2022-07-22 20:48:00,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:48:00,071 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1119 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:00,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 985 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:48:00,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4226 states. [2022-07-22 20:48:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4226 to 3880. [2022-07-22 20:48:00,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3880 states, 3050 states have (on average 1.280983606557377) internal successors, (3907), 3103 states have internal predecessors, (3907), 423 states have call successors, (423), 335 states have call predecessors, (423), 405 states have return successors, (582), 444 states have call predecessors, (582), 421 states have call successors, (582) [2022-07-22 20:48:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 4912 transitions. [2022-07-22 20:48:00,230 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 4912 transitions. Word has length 72 [2022-07-22 20:48:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:00,231 INFO L495 AbstractCegarLoop]: Abstraction has 3880 states and 4912 transitions. [2022-07-22 20:48:00,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 4912 transitions. [2022-07-22 20:48:00,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 20:48:00,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:00,232 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:00,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:48:00,232 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:00,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1017748717, now seen corresponding path program 1 times [2022-07-22 20:48:00,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:00,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633640239] [2022-07-22 20:48:00,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:00,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:00,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:00,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:00,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:00,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:00,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:00,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:00,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:00,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:00,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:00,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633640239] [2022-07-22 20:48:00,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633640239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:00,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:00,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:00,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841817302] [2022-07-22 20:48:00,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:00,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:00,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:00,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:00,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:00,299 INFO L87 Difference]: Start difference. First operand 3880 states and 4912 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:00,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:00,730 INFO L93 Difference]: Finished difference Result 5062 states and 6368 transitions. [2022-07-22 20:48:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:48:00,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-22 20:48:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:00,747 INFO L225 Difference]: With dead ends: 5062 [2022-07-22 20:48:00,747 INFO L226 Difference]: Without dead ends: 5059 [2022-07-22 20:48:00,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:48:00,750 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1353 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:00,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1362 Valid, 1179 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:48:00,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5059 states. [2022-07-22 20:48:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5059 to 4347. [2022-07-22 20:48:00,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3407 states have (on average 1.2717933665981802) internal successors, (4333), 3464 states have internal predecessors, (4333), 476 states have call successors, (476), 379 states have call predecessors, (476), 462 states have return successors, (664), 506 states have call predecessors, (664), 475 states have call successors, (664) [2022-07-22 20:48:00,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5473 transitions. [2022-07-22 20:48:00,940 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5473 transitions. Word has length 73 [2022-07-22 20:48:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:00,940 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 5473 transitions. [2022-07-22 20:48:00,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5473 transitions. [2022-07-22 20:48:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 20:48:00,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:00,941 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:00,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:48:00,942 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:00,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:00,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1486432694, now seen corresponding path program 1 times [2022-07-22 20:48:00,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:00,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342839038] [2022-07-22 20:48:00,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:00,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:01,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:01,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:01,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:01,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:01,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:01,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342839038] [2022-07-22 20:48:01,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342839038] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:48:01,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044543726] [2022-07-22 20:48:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:01,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:01,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:01,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:48:01,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:48:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:01,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 20:48:01,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:48:01,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:01,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:48:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:01,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044543726] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:48:01,455 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:48:01,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-22 20:48:01,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518519671] [2022-07-22 20:48:01,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:48:01,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:48:01,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:01,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:48:01,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:48:01,457 INFO L87 Difference]: Start difference. First operand 4347 states and 5473 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 20:48:02,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:02,886 INFO L93 Difference]: Finished difference Result 8888 states and 11081 transitions. [2022-07-22 20:48:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 20:48:02,887 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-22 20:48:02,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:02,931 INFO L225 Difference]: With dead ends: 8888 [2022-07-22 20:48:02,932 INFO L226 Difference]: Without dead ends: 8885 [2022-07-22 20:48:02,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-07-22 20:48:02,936 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1572 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1629 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:02,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1629 Valid, 2094 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:48:02,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8885 states. [2022-07-22 20:48:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8885 to 7816. [2022-07-22 20:48:03,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7816 states, 6109 states have (on average 1.2594532656735964) internal successors, (7694), 6210 states have internal predecessors, (7694), 855 states have call successors, (855), 693 states have call predecessors, (855), 850 states have return successors, (1201), 915 states have call predecessors, (1201), 854 states have call successors, (1201) [2022-07-22 20:48:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7816 states to 7816 states and 9750 transitions. [2022-07-22 20:48:03,308 INFO L78 Accepts]: Start accepts. Automaton has 7816 states and 9750 transitions. Word has length 74 [2022-07-22 20:48:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:03,308 INFO L495 AbstractCegarLoop]: Abstraction has 7816 states and 9750 transitions. [2022-07-22 20:48:03,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 20:48:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 7816 states and 9750 transitions. [2022-07-22 20:48:03,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 20:48:03,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:03,311 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:03,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:48:03,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 20:48:03,527 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:03,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:03,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1906520915, now seen corresponding path program 2 times [2022-07-22 20:48:03,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:03,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029163248] [2022-07-22 20:48:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:03,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:03,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:03,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029163248] [2022-07-22 20:48:03,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029163248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:03,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:03,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:48:03,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139668104] [2022-07-22 20:48:03,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:03,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:48:03,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:03,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:48:03,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:48:03,571 INFO L87 Difference]: Start difference. First operand 7816 states and 9750 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:03,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:03,928 INFO L93 Difference]: Finished difference Result 10526 states and 13162 transitions. [2022-07-22 20:48:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 20:48:03,929 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), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-22 20:48:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:03,949 INFO L225 Difference]: With dead ends: 10526 [2022-07-22 20:48:03,950 INFO L226 Difference]: Without dead ends: 4309 [2022-07-22 20:48:03,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:48:03,962 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 1013 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:03,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1042 Valid, 1037 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:48:03,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4309 states. [2022-07-22 20:48:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4309 to 3192. [2022-07-22 20:48:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3192 states, 2517 states have (on average 1.2590385379419944) internal successors, (3169), 2552 states have internal predecessors, (3169), 348 states have call successors, (348), 275 states have call predecessors, (348), 325 states have return successors, (460), 367 states have call predecessors, (460), 347 states have call successors, (460) [2022-07-22 20:48:04,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 3977 transitions. [2022-07-22 20:48:04,130 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 3977 transitions. Word has length 77 [2022-07-22 20:48:04,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:04,130 INFO L495 AbstractCegarLoop]: Abstraction has 3192 states and 3977 transitions. [2022-07-22 20:48:04,130 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), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:04,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 3977 transitions. [2022-07-22 20:48:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 20:48:04,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:04,132 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:04,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 20:48:04,133 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:04,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:04,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1402994660, now seen corresponding path program 1 times [2022-07-22 20:48:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:04,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546228491] [2022-07-22 20:48:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:04,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:04,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:04,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:04,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:04,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:04,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:04,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:04,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:48:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:04,193 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:48:04,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:04,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546228491] [2022-07-22 20:48:04,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546228491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:04,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:04,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:48:04,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590046768] [2022-07-22 20:48:04,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:04,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:48:04,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:04,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:48:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:04,195 INFO L87 Difference]: Start difference. First operand 3192 states and 3977 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:05,144 INFO L93 Difference]: Finished difference Result 9248 states and 11441 transitions. [2022-07-22 20:48:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 20:48:05,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-22 20:48:05,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:05,160 INFO L225 Difference]: With dead ends: 9248 [2022-07-22 20:48:05,161 INFO L226 Difference]: Without dead ends: 5433 [2022-07-22 20:48:05,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2022-07-22 20:48:05,171 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1136 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:05,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1706 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 891 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:48:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2022-07-22 20:48:05,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 5086. [2022-07-22 20:48:05,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5086 states, 3956 states have (on average 1.2287664307381194) internal successors, (4861), 4022 states have internal predecessors, (4861), 566 states have call successors, (566), 447 states have call predecessors, (566), 562 states have return successors, (854), 619 states have call predecessors, (854), 565 states have call successors, (854) [2022-07-22 20:48:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5086 states to 5086 states and 6281 transitions. [2022-07-22 20:48:05,404 INFO L78 Accepts]: Start accepts. Automaton has 5086 states and 6281 transitions. Word has length 84 [2022-07-22 20:48:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:05,405 INFO L495 AbstractCegarLoop]: Abstraction has 5086 states and 6281 transitions. [2022-07-22 20:48:05,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:05,405 INFO L276 IsEmpty]: Start isEmpty. Operand 5086 states and 6281 transitions. [2022-07-22 20:48:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 20:48:05,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:05,408 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-22 20:48:05,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:48:05,409 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:05,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1990740177, now seen corresponding path program 1 times [2022-07-22 20:48:05,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:05,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741605133] [2022-07-22 20:48:05,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:05,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:05,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:05,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:05,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 20:48:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 20:48:05,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:05,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741605133] [2022-07-22 20:48:05,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741605133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:05,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:05,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:48:05,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079810974] [2022-07-22 20:48:05,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:05,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:48:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:05,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:48:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:48:05,476 INFO L87 Difference]: Start difference. First operand 5086 states and 6281 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 20:48:06,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:06,418 INFO L93 Difference]: Finished difference Result 9442 states and 11544 transitions. [2022-07-22 20:48:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 20:48:06,418 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 93 [2022-07-22 20:48:06,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:06,432 INFO L225 Difference]: With dead ends: 9442 [2022-07-22 20:48:06,432 INFO L226 Difference]: Without dead ends: 5165 [2022-07-22 20:48:06,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-22 20:48:06,441 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 2088 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:06,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 1493 Invalid, 1484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:48:06,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2022-07-22 20:48:06,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 4794. [2022-07-22 20:48:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 3712 states have (on average 1.2074353448275863) internal successors, (4482), 3780 states have internal predecessors, (4482), 536 states have call successors, (536), 429 states have call predecessors, (536), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2022-07-22 20:48:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 5763 transitions. [2022-07-22 20:48:06,652 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 5763 transitions. Word has length 93 [2022-07-22 20:48:06,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:06,652 INFO L495 AbstractCegarLoop]: Abstraction has 4794 states and 5763 transitions. [2022-07-22 20:48:06,652 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 20:48:06,652 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 5763 transitions. [2022-07-22 20:48:06,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 20:48:06,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:06,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:06,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:48:06,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:06,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash 991651678, now seen corresponding path program 1 times [2022-07-22 20:48:06,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:06,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178170933] [2022-07-22 20:48:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:06,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:48:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 20:48:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:06,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:06,721 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 20:48:06,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:06,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178170933] [2022-07-22 20:48:06,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178170933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:06,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:06,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:48:06,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540372071] [2022-07-22 20:48:06,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:06,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:48:06,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:06,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:48:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:48:06,722 INFO L87 Difference]: Start difference. First operand 4794 states and 5763 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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 20:48:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:07,510 INFO L93 Difference]: Finished difference Result 5085 states and 6223 transitions. [2022-07-22 20:48:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:48:07,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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 112 [2022-07-22 20:48:07,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:07,521 INFO L225 Difference]: With dead ends: 5085 [2022-07-22 20:48:07,522 INFO L226 Difference]: Without dead ends: 4870 [2022-07-22 20:48:07,524 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 20:48:07,524 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 678 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:07,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 908 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:48:07,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2022-07-22 20:48:07,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 4794. [2022-07-22 20:48:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 3712 states have (on average 1.207165948275862) internal successors, (4481), 3780 states have internal predecessors, (4481), 536 states have call successors, (536), 429 states have call predecessors, (536), 544 states have return successors, (745), 587 states have call predecessors, (745), 535 states have call successors, (745) [2022-07-22 20:48:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 5762 transitions. [2022-07-22 20:48:07,766 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 5762 transitions. Word has length 112 [2022-07-22 20:48:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:07,767 INFO L495 AbstractCegarLoop]: Abstraction has 4794 states and 5762 transitions. [2022-07-22 20:48:07,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 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 20:48:07,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 5762 transitions. [2022-07-22 20:48:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 20:48:07,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:07,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:07,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:48:07,769 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:07,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:07,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1396912352, now seen corresponding path program 1 times [2022-07-22 20:48:07,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:07,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020110553] [2022-07-22 20:48:07,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:07,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:07,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:07,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:48:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:07,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 20:48:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:07,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:07,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:07,832 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 20:48:07,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:07,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020110553] [2022-07-22 20:48:07,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020110553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:07,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:07,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:07,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451676888] [2022-07-22 20:48:07,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:07,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:07,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:07,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:07,834 INFO L87 Difference]: Start difference. First operand 4794 states and 5762 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:09,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:09,624 INFO L93 Difference]: Finished difference Result 5391 states and 6718 transitions. [2022-07-22 20:48:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:09,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-07-22 20:48:09,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:09,641 INFO L225 Difference]: With dead ends: 5391 [2022-07-22 20:48:09,642 INFO L226 Difference]: Without dead ends: 5178 [2022-07-22 20:48:09,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:48:09,644 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 1035 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2048 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:09,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 2017 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2048 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:48:09,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5178 states. [2022-07-22 20:48:09,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5178 to 5017. [2022-07-22 20:48:09,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5017 states, 3910 states have (on average 1.2255754475703324) internal successors, (4792), 3980 states have internal predecessors, (4792), 553 states have call successors, (553), 435 states have call predecessors, (553), 552 states have return successors, (769), 605 states have call predecessors, (769), 552 states have call successors, (769) [2022-07-22 20:48:09,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5017 states to 5017 states and 6114 transitions. [2022-07-22 20:48:09,917 INFO L78 Accepts]: Start accepts. Automaton has 5017 states and 6114 transitions. Word has length 112 [2022-07-22 20:48:09,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:09,918 INFO L495 AbstractCegarLoop]: Abstraction has 5017 states and 6114 transitions. [2022-07-22 20:48:09,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:09,918 INFO L276 IsEmpty]: Start isEmpty. Operand 5017 states and 6114 transitions. [2022-07-22 20:48:09,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 20:48:09,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:09,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:09,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:48:09,920 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:09,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:09,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1279080030, now seen corresponding path program 1 times [2022-07-22 20:48:09,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:09,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033492971] [2022-07-22 20:48:09,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:09,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:09,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:09,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:48:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:09,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 20:48:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:09,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:09,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:09,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:09,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033492971] [2022-07-22 20:48:09,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033492971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:09,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:09,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:09,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594564130] [2022-07-22 20:48:09,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:09,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:09,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:09,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:09,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:10,000 INFO L87 Difference]: Start difference. First operand 5017 states and 6114 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:11,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:11,661 INFO L93 Difference]: Finished difference Result 6150 states and 7910 transitions. [2022-07-22 20:48:11,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:11,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-07-22 20:48:11,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:11,675 INFO L225 Difference]: With dead ends: 6150 [2022-07-22 20:48:11,675 INFO L226 Difference]: Without dead ends: 5716 [2022-07-22 20:48:11,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:48:11,678 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 1059 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 2062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:11,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1901 Invalid, 2062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:48:11,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2022-07-22 20:48:11,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 5427. [2022-07-22 20:48:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5427 states, 4276 states have (on average 1.2523386342376053) internal successors, (5355), 4348 states have internal predecessors, (5355), 583 states have call successors, (583), 447 states have call predecessors, (583), 566 states have return successors, (809), 637 states have call predecessors, (809), 582 states have call successors, (809) [2022-07-22 20:48:11,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5427 states to 5427 states and 6747 transitions. [2022-07-22 20:48:11,981 INFO L78 Accepts]: Start accepts. Automaton has 5427 states and 6747 transitions. Word has length 112 [2022-07-22 20:48:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:11,982 INFO L495 AbstractCegarLoop]: Abstraction has 5427 states and 6747 transitions. [2022-07-22 20:48:11,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states and 6747 transitions. [2022-07-22 20:48:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 20:48:11,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:11,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:11,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:48:11,984 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:11,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:11,985 INFO L85 PathProgramCache]: Analyzing trace with hash 395571040, now seen corresponding path program 1 times [2022-07-22 20:48:11,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:11,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994158460] [2022-07-22 20:48:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:11,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:11,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:12,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:48:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:12,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 20:48:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:12,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:12,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:12,048 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 20:48:12,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:12,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994158460] [2022-07-22 20:48:12,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994158460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:12,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:12,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:12,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736136765] [2022-07-22 20:48:12,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:12,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:12,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:12,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:12,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:12,050 INFO L87 Difference]: Start difference. First operand 5427 states and 6747 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:13,755 INFO L93 Difference]: Finished difference Result 7634 states and 10235 transitions. [2022-07-22 20:48:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-07-22 20:48:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:13,767 INFO L225 Difference]: With dead ends: 7634 [2022-07-22 20:48:13,767 INFO L226 Difference]: Without dead ends: 6790 [2022-07-22 20:48:13,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:48:13,771 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 1034 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2044 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2008 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:13,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 2008 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2044 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:48:13,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6790 states. [2022-07-22 20:48:14,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6790 to 6249. [2022-07-22 20:48:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6249 states, 5010 states have (on average 1.2940119760479043) internal successors, (6483), 5086 states have internal predecessors, (6483), 643 states have call successors, (643), 471 states have call predecessors, (643), 594 states have return successors, (895), 701 states have call predecessors, (895), 642 states have call successors, (895) [2022-07-22 20:48:14,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6249 states to 6249 states and 8021 transitions. [2022-07-22 20:48:14,057 INFO L78 Accepts]: Start accepts. Automaton has 6249 states and 8021 transitions. Word has length 112 [2022-07-22 20:48:14,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:14,058 INFO L495 AbstractCegarLoop]: Abstraction has 6249 states and 8021 transitions. [2022-07-22 20:48:14,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6249 states and 8021 transitions. [2022-07-22 20:48:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 20:48:14,061 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:14,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:14,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:48:14,061 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:14,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:14,061 INFO L85 PathProgramCache]: Analyzing trace with hash 367070750, now seen corresponding path program 1 times [2022-07-22 20:48:14,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:14,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887418938] [2022-07-22 20:48:14,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:14,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:48:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 20:48:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,136 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 20:48:14,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:14,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887418938] [2022-07-22 20:48:14,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887418938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:14,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:14,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:14,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141876066] [2022-07-22 20:48:14,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:14,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:14,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:14,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:14,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:14,138 INFO L87 Difference]: Start difference. First operand 6249 states and 8021 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:15,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:15,890 INFO L93 Difference]: Finished difference Result 10600 states and 14899 transitions. [2022-07-22 20:48:15,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:15,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-07-22 20:48:15,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:15,910 INFO L225 Difference]: With dead ends: 10600 [2022-07-22 20:48:15,910 INFO L226 Difference]: Without dead ends: 8934 [2022-07-22 20:48:15,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:48:15,918 INFO L413 NwaCegarLoop]: 687 mSDtfsCounter, 1034 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2038 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:15,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 2005 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2038 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:48:15,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8934 states. [2022-07-22 20:48:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8934 to 7899. [2022-07-22 20:48:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7899 states, 6484 states have (on average 1.3490129549660703) internal successors, (8747), 6568 states have internal predecessors, (8747), 763 states have call successors, (763), 519 states have call predecessors, (763), 650 states have return successors, (1085), 829 states have call predecessors, (1085), 762 states have call successors, (1085) [2022-07-22 20:48:16,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7899 states to 7899 states and 10595 transitions. [2022-07-22 20:48:16,320 INFO L78 Accepts]: Start accepts. Automaton has 7899 states and 10595 transitions. Word has length 112 [2022-07-22 20:48:16,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:16,320 INFO L495 AbstractCegarLoop]: Abstraction has 7899 states and 10595 transitions. [2022-07-22 20:48:16,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:16,320 INFO L276 IsEmpty]: Start isEmpty. Operand 7899 states and 10595 transitions. [2022-07-22 20:48:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 20:48:16,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:16,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:16,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 20:48:16,324 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:16,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1573511264, now seen corresponding path program 1 times [2022-07-22 20:48:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:16,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148178611] [2022-07-22 20:48:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:16,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:48:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 20:48:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,394 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 20:48:16,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:16,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148178611] [2022-07-22 20:48:16,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148178611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:16,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:16,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:16,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232489294] [2022-07-22 20:48:16,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:16,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:16,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:16,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:16,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:16,396 INFO L87 Difference]: Start difference. First operand 7899 states and 10595 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:18,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:18,346 INFO L93 Difference]: Finished difference Result 16530 states and 24283 transitions. [2022-07-22 20:48:18,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:18,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-07-22 20:48:18,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:18,376 INFO L225 Difference]: With dead ends: 16530 [2022-07-22 20:48:18,376 INFO L226 Difference]: Without dead ends: 13214 [2022-07-22 20:48:18,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:48:18,387 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 1034 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:18,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 2002 Invalid, 2138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:48:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13214 states. [2022-07-22 20:48:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13214 to 11213. [2022-07-22 20:48:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11213 states, 9446 states have (on average 1.40747406309549) internal successors, (13295), 9546 states have internal predecessors, (13295), 1003 states have call successors, (1003), 615 states have call predecessors, (1003), 762 states have return successors, (1519), 1085 states have call predecessors, (1519), 1002 states have call successors, (1519) [2022-07-22 20:48:18,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11213 states to 11213 states and 15817 transitions. [2022-07-22 20:48:18,958 INFO L78 Accepts]: Start accepts. Automaton has 11213 states and 15817 transitions. Word has length 112 [2022-07-22 20:48:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:18,958 INFO L495 AbstractCegarLoop]: Abstraction has 11213 states and 15817 transitions. [2022-07-22 20:48:18,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:18,958 INFO L276 IsEmpty]: Start isEmpty. Operand 11213 states and 15817 transitions. [2022-07-22 20:48:18,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 20:48:18,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:18,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:18,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:48:18,969 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:18,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash 303551966, now seen corresponding path program 1 times [2022-07-22 20:48:18,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:18,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226010495] [2022-07-22 20:48:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:18,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:48:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 20:48:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,045 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 20:48:19,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:19,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226010495] [2022-07-22 20:48:19,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226010495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:19,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:19,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:19,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359680539] [2022-07-22 20:48:19,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:19,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:19,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:19,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:19,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:19,047 INFO L87 Difference]: Start difference. First operand 11213 states and 15817 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:21,444 INFO L93 Difference]: Finished difference Result 28388 states and 43239 transitions. [2022-07-22 20:48:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:21,444 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-07-22 20:48:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:21,499 INFO L225 Difference]: With dead ends: 28388 [2022-07-22 20:48:21,499 INFO L226 Difference]: Without dead ends: 21758 [2022-07-22 20:48:21,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:48:21,523 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 1034 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2026 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 2132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:21,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1999 Invalid, 2132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2026 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:48:21,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21758 states. [2022-07-22 20:48:22,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21758 to 17871. [2022-07-22 20:48:22,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17871 states, 15400 states have (on average 1.4568181818181818) internal successors, (22435), 15532 states have internal predecessors, (22435), 1483 states have call successors, (1483), 807 states have call predecessors, (1483), 986 states have return successors, (2549), 1597 states have call predecessors, (2549), 1482 states have call successors, (2549) [2022-07-22 20:48:22,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17871 states to 17871 states and 26467 transitions. [2022-07-22 20:48:22,473 INFO L78 Accepts]: Start accepts. Automaton has 17871 states and 26467 transitions. Word has length 112 [2022-07-22 20:48:22,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:22,473 INFO L495 AbstractCegarLoop]: Abstraction has 17871 states and 26467 transitions. [2022-07-22 20:48:22,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:22,474 INFO L276 IsEmpty]: Start isEmpty. Operand 17871 states and 26467 transitions. [2022-07-22 20:48:22,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 20:48:22,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:22,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:22,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:48:22,483 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:22,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:22,483 INFO L85 PathProgramCache]: Analyzing trace with hash -467181600, now seen corresponding path program 1 times [2022-07-22 20:48:22,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:22,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990062756] [2022-07-22 20:48:22,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:22,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:22,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:48:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:22,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 20:48:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:22,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:22,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:22,542 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 20:48:22,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:22,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990062756] [2022-07-22 20:48:22,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990062756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:22,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:22,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:22,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014660490] [2022-07-22 20:48:22,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:22,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:22,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:22,545 INFO L87 Difference]: Start difference. First operand 17871 states and 26467 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:26,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:26,611 INFO L93 Difference]: Finished difference Result 58054 states and 90709 transitions. [2022-07-22 20:48:26,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:48:26,611 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-07-22 20:48:26,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:26,719 INFO L225 Difference]: With dead ends: 58054 [2022-07-22 20:48:26,719 INFO L226 Difference]: Without dead ends: 44766 [2022-07-22 20:48:26,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:48:26,753 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 1100 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:26,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 2088 Invalid, 2427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:48:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44766 states. [2022-07-22 20:48:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44766 to 31057. [2022-07-22 20:48:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31057 states, 27242 states have (on average 1.4932457235151604) internal successors, (40679), 27438 states have internal predecessors, (40679), 2379 states have call successors, (2379), 1191 states have call predecessors, (2379), 1434 states have return successors, (5031), 2557 states have call predecessors, (5031), 2378 states have call successors, (5031) [2022-07-22 20:48:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31057 states to 31057 states and 48089 transitions. [2022-07-22 20:48:28,475 INFO L78 Accepts]: Start accepts. Automaton has 31057 states and 48089 transitions. Word has length 112 [2022-07-22 20:48:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:28,475 INFO L495 AbstractCegarLoop]: Abstraction has 31057 states and 48089 transitions. [2022-07-22 20:48:28,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:28,476 INFO L276 IsEmpty]: Start isEmpty. Operand 31057 states and 48089 transitions. [2022-07-22 20:48:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 20:48:28,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:28,493 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:28,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:48:28,493 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:28,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:28,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1461875298, now seen corresponding path program 1 times [2022-07-22 20:48:28,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:28,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469103787] [2022-07-22 20:48:28,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:28,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:28,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:28,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:48:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 20:48:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:28,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:28,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:28,552 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 20:48:28,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:28,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469103787] [2022-07-22 20:48:28,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469103787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:28,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:28,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:28,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616600790] [2022-07-22 20:48:28,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:28,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:28,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:28,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:28,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:28,554 INFO L87 Difference]: Start difference. First operand 31057 states and 48089 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:35,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:35,179 INFO L93 Difference]: Finished difference Result 107531 states and 172649 transitions. [2022-07-22 20:48:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:48:35,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-07-22 20:48:35,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:35,451 INFO L225 Difference]: With dead ends: 107531 [2022-07-22 20:48:35,451 INFO L226 Difference]: Without dead ends: 81057 [2022-07-22 20:48:35,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:48:35,530 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 1092 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:35,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 2052 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:48:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81057 states. [2022-07-22 20:48:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81057 to 57491. [2022-07-22 20:48:39,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57491 states, 51052 states have (on average 1.5177270234270939) internal successors, (77483), 51376 states have internal predecessors, (77483), 4107 states have call successors, (4107), 1959 states have call predecessors, (4107), 2330 states have return successors, (11389), 4413 states have call predecessors, (11389), 4106 states have call successors, (11389) [2022-07-22 20:48:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57491 states to 57491 states and 92979 transitions. [2022-07-22 20:48:39,389 INFO L78 Accepts]: Start accepts. Automaton has 57491 states and 92979 transitions. Word has length 112 [2022-07-22 20:48:39,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:39,390 INFO L495 AbstractCegarLoop]: Abstraction has 57491 states and 92979 transitions. [2022-07-22 20:48:39,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:39,390 INFO L276 IsEmpty]: Start isEmpty. Operand 57491 states and 92979 transitions. [2022-07-22 20:48:39,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 20:48:39,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:39,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:39,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 20:48:39,419 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:39,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:39,420 INFO L85 PathProgramCache]: Analyzing trace with hash 874517212, now seen corresponding path program 1 times [2022-07-22 20:48:39,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:39,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138778831] [2022-07-22 20:48:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:39,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:48:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 20:48:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,476 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 20:48:39,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:39,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138778831] [2022-07-22 20:48:39,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138778831] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:39,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:39,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:39,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535588849] [2022-07-22 20:48:39,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:39,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:39,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:39,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:39,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:39,478 INFO L87 Difference]: Start difference. First operand 57491 states and 92979 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:51,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:51,205 INFO L93 Difference]: Finished difference Result 205777 states and 341133 transitions. [2022-07-22 20:48:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:48:51,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-07-22 20:48:51,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:51,711 INFO L225 Difference]: With dead ends: 205777 [2022-07-22 20:48:51,711 INFO L226 Difference]: Without dead ends: 152869 [2022-07-22 20:48:51,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:48:51,854 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1196 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:51,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 1881 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 20:48:51,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152869 states. [2022-07-22 20:48:59,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152869 to 110231. [2022-07-22 20:48:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110231 states, 98672 states have (on average 1.5325421598832496) internal successors, (151219), 99252 states have internal predecessors, (151219), 7435 states have call successors, (7435), 3495 states have call predecessors, (7435), 4122 states have return successors, (28351), 7997 states have call predecessors, (28351), 7434 states have call successors, (28351) [2022-07-22 20:48:59,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110231 states to 110231 states and 187005 transitions. [2022-07-22 20:48:59,790 INFO L78 Accepts]: Start accepts. Automaton has 110231 states and 187005 transitions. Word has length 112 [2022-07-22 20:48:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:59,791 INFO L495 AbstractCegarLoop]: Abstraction has 110231 states and 187005 transitions. [2022-07-22 20:48:59,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:48:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 110231 states and 187005 transitions. [2022-07-22 20:48:59,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 20:48:59,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:59,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:59,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 20:48:59,850 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:59,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:59,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1543967266, now seen corresponding path program 1 times [2022-07-22 20:48:59,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:59,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181542329] [2022-07-22 20:48:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:59,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-22 20:48:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 20:48:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 20:48:59,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,909 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 20:48:59,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:59,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181542329] [2022-07-22 20:48:59,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181542329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:59,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:59,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:59,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648190938] [2022-07-22 20:48:59,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:59,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:59,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:59,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:59,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:59,911 INFO L87 Difference]: Start difference. First operand 110231 states and 187005 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 20:49:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:22,091 INFO L93 Difference]: Finished difference Result 397533 states and 688045 transitions. [2022-07-22 20:49:22,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:49:22,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-07-22 20:49:22,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:23,413 INFO L225 Difference]: With dead ends: 397533 [2022-07-22 20:49:23,414 INFO L226 Difference]: Without dead ends: 291885