./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0792bb078b549cb8c62d642eddb09d42b03fb2451c67a454a8e8576be6796f29 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:04:52,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:04:52,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:04:52,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:04:52,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:04:52,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:04:52,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:04:52,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:04:52,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:04:52,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:04:52,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:04:52,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:04:52,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:04:52,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:04:52,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:04:52,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:04:52,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:04:52,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:04:52,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:04:52,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:04:52,458 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:04:52,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:04:52,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:04:52,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:04:52,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:04:52,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:04:52,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:04:52,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:04:52,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:04:52,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:04:52,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:04:52,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:04:52,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:04:52,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:04:52,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:04:52,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:04:52,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:04:52,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:04:52,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:04:52,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:04:52,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:04:52,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:04:52,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:04:52,520 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:04:52,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:04:52,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:04:52,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:04:52,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:04:52,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:04:52,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:04:52,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:04:52,524 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:04:52,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:04:52,525 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:04:52,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:04:52,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:04:52,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:04:52,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:04:52,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:04:52,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:04:52,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:04:52,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:04:52,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:04:52,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:04:52,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:04:52,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:04:52,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:04:52,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:04:52,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:04:52,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:04:52,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:04:52,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:04:52,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:04:52,529 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:04:52,529 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:04:52,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:04:52,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0792bb078b549cb8c62d642eddb09d42b03fb2451c67a454a8e8576be6796f29 [2022-07-21 08:04:52,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:04:52,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:04:52,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:04:52,902 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:04:52,903 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:04:52,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2022-07-21 08:04:52,969 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760b6cd93/3fdc2aab0d354bbfa20a8ba2a2bd731b/FLAG20d8683ee [2022-07-21 08:04:53,476 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:04:53,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2022-07-21 08:04:53,494 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760b6cd93/3fdc2aab0d354bbfa20a8ba2a2bd731b/FLAG20d8683ee [2022-07-21 08:04:53,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/760b6cd93/3fdc2aab0d354bbfa20a8ba2a2bd731b [2022-07-21 08:04:53,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:04:53,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:04:53,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:04:53,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:04:53,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:04:53,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:04:53" (1/1) ... [2022-07-21 08:04:53,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ceec0bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:53, skipping insertion in model container [2022-07-21 08:04:53,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:04:53" (1/1) ... [2022-07-21 08:04:53,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:04:53,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:04:53,993 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.02.cil-1.c[914,927] [2022-07-21 08:04:54,031 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.02.cil-1.c[7115,7128] [2022-07-21 08:04:54,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:04:54,102 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:04:54,126 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.02.cil-1.c[914,927] [2022-07-21 08:04:54,155 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.02.cil-1.c[7115,7128] [2022-07-21 08:04:54,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:04:54,195 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:04:54,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54 WrapperNode [2022-07-21 08:04:54,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:04:54,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:04:54,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:04:54,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:04:54,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54" (1/1) ... [2022-07-21 08:04:54,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54" (1/1) ... [2022-07-21 08:04:54,255 INFO L137 Inliner]: procedures = 57, calls = 63, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 460 [2022-07-21 08:04:54,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:04:54,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:04:54,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:04:54,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:04:54,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54" (1/1) ... [2022-07-21 08:04:54,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54" (1/1) ... [2022-07-21 08:04:54,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54" (1/1) ... [2022-07-21 08:04:54,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54" (1/1) ... [2022-07-21 08:04:54,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54" (1/1) ... [2022-07-21 08:04:54,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54" (1/1) ... [2022-07-21 08:04:54,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54" (1/1) ... [2022-07-21 08:04:54,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:04:54,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:04:54,294 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:04:54,294 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:04:54,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54" (1/1) ... [2022-07-21 08:04:54,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:04:54,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:04:54,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:04:54,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:04:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:04:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:04:54,370 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:04:54,370 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-21 08:04:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-21 08:04:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:04:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:04:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:04:54,371 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:04:54,371 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-21 08:04:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-21 08:04:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:04:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:04:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:04:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:04:54,372 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-21 08:04:54,372 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-21 08:04:54,373 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-21 08:04:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-21 08:04:54,373 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-21 08:04:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-21 08:04:54,373 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:04:54,373 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:04:54,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:04:54,374 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:04:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:04:54,374 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-21 08:04:54,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-21 08:04:54,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:04:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:04:54,375 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:04:54,375 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:04:54,453 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:04:54,455 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:04:55,003 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:04:55,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:04:55,015 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-21 08:04:55,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:04:55 BoogieIcfgContainer [2022-07-21 08:04:55,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:04:55,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:04:55,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:04:55,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:04:55,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:04:53" (1/3) ... [2022-07-21 08:04:55,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4094237e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:04:55, skipping insertion in model container [2022-07-21 08:04:55,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:04:54" (2/3) ... [2022-07-21 08:04:55,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4094237e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:04:55, skipping insertion in model container [2022-07-21 08:04:55,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:04:55" (3/3) ... [2022-07-21 08:04:55,026 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2022-07-21 08:04:55,039 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:04:55,040 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:04:55,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:04:55,094 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@12fcff01, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@62ef33ab [2022-07-21 08:04:55,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:04:55,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 186 states have (on average 1.553763440860215) internal successors, (289), 192 states have internal predecessors, (289), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-07-21 08:04:55,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:04:55,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:55,112 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] [2022-07-21 08:04:55,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1449552793, now seen corresponding path program 1 times [2022-07-21 08:04:55,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:55,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15325796] [2022-07-21 08:04:55,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:55,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:55,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:55,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:04:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:04:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:04:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:04:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:04:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:55,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:04:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:55,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:55,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15325796] [2022-07-21 08:04:55,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15325796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:55,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:55,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:04:55,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470292444] [2022-07-21 08:04:55,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:55,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:04:55,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:55,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:04:55,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:04:55,487 INFO L87 Difference]: Start difference. First operand has 233 states, 186 states have (on average 1.553763440860215) internal successors, (289), 192 states have internal predecessors, (289), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:04:56,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:56,022 INFO L93 Difference]: Finished difference Result 467 states and 699 transitions. [2022-07-21 08:04:56,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:04:56,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:04:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:56,036 INFO L225 Difference]: With dead ends: 467 [2022-07-21 08:04:56,036 INFO L226 Difference]: Without dead ends: 241 [2022-07-21 08:04:56,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:04:56,043 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 458 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:56,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 707 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:04:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-21 08:04:56,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 223. [2022-07-21 08:04:56,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 178 states have (on average 1.449438202247191) internal successors, (258), 182 states have internal predecessors, (258), 30 states have call successors, (30), 14 states have call predecessors, (30), 13 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-21 08:04:56,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 316 transitions. [2022-07-21 08:04:56,105 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 316 transitions. Word has length 65 [2022-07-21 08:04:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:56,106 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 316 transitions. [2022-07-21 08:04:56,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:04:56,106 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 316 transitions. [2022-07-21 08:04:56,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:04:56,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:56,110 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] [2022-07-21 08:04:56,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:04:56,111 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:56,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:56,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1408878043, now seen corresponding path program 1 times [2022-07-21 08:04:56,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:56,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193301849] [2022-07-21 08:04:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:56,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:56,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:04:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:56,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:04:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:04:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:56,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:04:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:04:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:04:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:56,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:56,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193301849] [2022-07-21 08:04:56,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193301849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:56,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:56,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:04:56,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457889134] [2022-07-21 08:04:56,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:56,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:04:56,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:56,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:04:56,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:04:56,232 INFO L87 Difference]: Start difference. First operand 223 states and 316 transitions. 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) [2022-07-21 08:04:56,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:56,867 INFO L93 Difference]: Finished difference Result 446 states and 630 transitions. [2022-07-21 08:04:56,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:04:56,868 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 [2022-07-21 08:04:56,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:56,872 INFO L225 Difference]: With dead ends: 446 [2022-07-21 08:04:56,872 INFO L226 Difference]: Without dead ends: 358 [2022-07-21 08:04:56,873 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 [2022-07-21 08:04:56,874 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 754 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:56,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 886 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:04:56,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-21 08:04:56,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 319. [2022-07-21 08:04:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 254 states have (on average 1.4251968503937007) internal successors, (362), 260 states have internal predecessors, (362), 41 states have call successors, (41), 21 states have call predecessors, (41), 22 states have return successors, (44), 40 states have call predecessors, (44), 39 states have call successors, (44) [2022-07-21 08:04:56,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 447 transitions. [2022-07-21 08:04:56,906 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 447 transitions. Word has length 65 [2022-07-21 08:04:56,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:56,907 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 447 transitions. [2022-07-21 08:04:56,907 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) [2022-07-21 08:04:56,907 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 447 transitions. [2022-07-21 08:04:56,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:04:56,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:56,910 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] [2022-07-21 08:04:56,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:04:56,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:56,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:56,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1812663994, now seen corresponding path program 1 times [2022-07-21 08:04:56,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:56,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492840778] [2022-07-21 08:04:56,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:56,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:56,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:04:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:56,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:04:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:04:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:04:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:04:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:04:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:57,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:57,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492840778] [2022-07-21 08:04:57,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492840778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:57,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:57,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:04:57,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816936596] [2022-07-21 08:04:57,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:57,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:04:57,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:57,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:04:57,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:04:57,107 INFO L87 Difference]: Start difference. First operand 319 states and 447 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) [2022-07-21 08:04:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:57,747 INFO L93 Difference]: Finished difference Result 533 states and 741 transitions. [2022-07-21 08:04:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:04:57,748 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 [2022-07-21 08:04:57,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:57,751 INFO L225 Difference]: With dead ends: 533 [2022-07-21 08:04:57,751 INFO L226 Difference]: Without dead ends: 356 [2022-07-21 08:04:57,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:04:57,753 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 368 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:57,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 1231 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:04:57,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-07-21 08:04:57,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 324. [2022-07-21 08:04:57,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 258 states have (on average 1.4147286821705427) internal successors, (365), 264 states have internal predecessors, (365), 41 states have call successors, (41), 21 states have call predecessors, (41), 23 states have return successors, (45), 41 states have call predecessors, (45), 39 states have call successors, (45) [2022-07-21 08:04:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 451 transitions. [2022-07-21 08:04:57,778 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 451 transitions. Word has length 65 [2022-07-21 08:04:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:57,778 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 451 transitions. [2022-07-21 08:04:57,779 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) [2022-07-21 08:04:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 451 transitions. [2022-07-21 08:04:57,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:04:57,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:57,782 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] [2022-07-21 08:04:57,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:04:57,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:57,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash 783304696, now seen corresponding path program 1 times [2022-07-21 08:04:57,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:57,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797760106] [2022-07-21 08:04:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:57,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:04:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:04:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:04:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:04:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:04:57,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:04:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:57,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:57,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797760106] [2022-07-21 08:04:57,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797760106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:57,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:57,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:04:57,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458547837] [2022-07-21 08:04:57,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:57,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:04:57,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:57,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:04:57,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:04:57,897 INFO L87 Difference]: Start difference. First operand 324 states and 451 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) [2022-07-21 08:04:59,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:04:59,456 INFO L93 Difference]: Finished difference Result 1224 states and 1669 transitions. [2022-07-21 08:04:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:04:59,457 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 [2022-07-21 08:04:59,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:04:59,465 INFO L225 Difference]: With dead ends: 1224 [2022-07-21 08:04:59,465 INFO L226 Difference]: Without dead ends: 1030 [2022-07-21 08:04:59,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:04:59,477 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 2068 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:04:59,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 1438 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:04:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-07-21 08:04:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 905. [2022-07-21 08:04:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 720 states have (on average 1.3611111111111112) internal successors, (980), 734 states have internal predecessors, (980), 98 states have call successors, (98), 74 states have call predecessors, (98), 85 states have return successors, (114), 98 states have call predecessors, (114), 96 states have call successors, (114) [2022-07-21 08:04:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1192 transitions. [2022-07-21 08:04:59,549 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1192 transitions. Word has length 65 [2022-07-21 08:04:59,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:04:59,549 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1192 transitions. [2022-07-21 08:04:59,549 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) [2022-07-21 08:04:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1192 transitions. [2022-07-21 08:04:59,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:04:59,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:04:59,553 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] [2022-07-21 08:04:59,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:04:59,554 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:04:59,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:04:59,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1834753785, now seen corresponding path program 1 times [2022-07-21 08:04:59,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:04:59,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260626854] [2022-07-21 08:04:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:04:59,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:04:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:59,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:04:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:04:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:04:59,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:04:59,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:04:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:59,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:04:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:59,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:04:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:04:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:04:59,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:04:59,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260626854] [2022-07-21 08:04:59,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260626854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:04:59,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:04:59,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:04:59,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236082103] [2022-07-21 08:04:59,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:04:59,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:04:59,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:04:59,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:04:59,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:04:59,696 INFO L87 Difference]: Start difference. First operand 905 states and 1192 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) [2022-07-21 08:05:00,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:00,315 INFO L93 Difference]: Finished difference Result 1786 states and 2335 transitions. [2022-07-21 08:05:00,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:05:00,316 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 [2022-07-21 08:05:00,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:00,321 INFO L225 Difference]: With dead ends: 1786 [2022-07-21 08:05:00,321 INFO L226 Difference]: Without dead ends: 1017 [2022-07-21 08:05:00,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:05:00,324 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 369 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:00,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1228 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:05:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-07-21 08:05:00,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 925. [2022-07-21 08:05:00,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 736 states have (on average 1.346467391304348) internal successors, (991), 750 states have internal predecessors, (991), 98 states have call successors, (98), 74 states have call predecessors, (98), 89 states have return successors, (118), 102 states have call predecessors, (118), 96 states have call successors, (118) [2022-07-21 08:05:00,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1207 transitions. [2022-07-21 08:05:00,385 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1207 transitions. Word has length 65 [2022-07-21 08:05:00,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:00,385 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1207 transitions. [2022-07-21 08:05:00,385 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) [2022-07-21 08:05:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1207 transitions. [2022-07-21 08:05:00,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:05:00,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:00,387 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] [2022-07-21 08:05:00,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:05:00,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:00,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1074010117, now seen corresponding path program 1 times [2022-07-21 08:05:00,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:00,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739726671] [2022-07-21 08:05:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:00,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:00,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:00,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:00,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:00,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:00,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:00,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:00,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:00,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739726671] [2022-07-21 08:05:00,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739726671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:00,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:00,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:05:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084492624] [2022-07-21 08:05:00,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:00,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:05:00,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:00,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:05:00,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:00,516 INFO L87 Difference]: Start difference. First operand 925 states and 1207 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) [2022-07-21 08:05:01,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:01,288 INFO L93 Difference]: Finished difference Result 2493 states and 3154 transitions. [2022-07-21 08:05:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:05:01,288 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 [2022-07-21 08:05:01,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:01,297 INFO L225 Difference]: With dead ends: 2493 [2022-07-21 08:05:01,297 INFO L226 Difference]: Without dead ends: 1705 [2022-07-21 08:05:01,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:05:01,300 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 636 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:01,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1088 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:05:01,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-07-21 08:05:01,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1373. [2022-07-21 08:05:01,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1089 states have (on average 1.322314049586777) internal successors, (1440), 1112 states have internal predecessors, (1440), 144 states have call successors, (144), 113 states have call predecessors, (144), 138 states have return successors, (190), 150 states have call predecessors, (190), 142 states have call successors, (190) [2022-07-21 08:05:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1774 transitions. [2022-07-21 08:05:01,387 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1774 transitions. Word has length 65 [2022-07-21 08:05:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:01,388 INFO L495 AbstractCegarLoop]: Abstraction has 1373 states and 1774 transitions. [2022-07-21 08:05:01,388 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) [2022-07-21 08:05:01,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1774 transitions. [2022-07-21 08:05:01,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:05:01,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:01,390 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] [2022-07-21 08:05:01,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:05:01,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:01,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:01,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1208023623, now seen corresponding path program 1 times [2022-07-21 08:05:01,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:01,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922399800] [2022-07-21 08:05:01,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:01,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:01,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:01,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:01,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:01,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:01,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:01,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922399800] [2022-07-21 08:05:01,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922399800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:01,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:01,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:05:01,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428743233] [2022-07-21 08:05:01,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:01,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:05:01,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:01,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:05:01,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:05:01,487 INFO L87 Difference]: Start difference. First operand 1373 states and 1774 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) [2022-07-21 08:05:01,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:01,945 INFO L93 Difference]: Finished difference Result 3844 states and 4913 transitions. [2022-07-21 08:05:01,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:05:01,946 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 [2022-07-21 08:05:01,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:01,958 INFO L225 Difference]: With dead ends: 3844 [2022-07-21 08:05:01,958 INFO L226 Difference]: Without dead ends: 2610 [2022-07-21 08:05:01,962 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 [2022-07-21 08:05:01,963 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 757 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:01,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 748 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:05:01,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2022-07-21 08:05:02,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2502. [2022-07-21 08:05:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 1958 states have (on average 1.2727272727272727) internal successors, (2492), 2002 states have internal predecessors, (2492), 268 states have call successors, (268), 219 states have call predecessors, (268), 274 states have return successors, (398), 283 states have call predecessors, (398), 266 states have call successors, (398) [2022-07-21 08:05:02,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 3158 transitions. [2022-07-21 08:05:02,112 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 3158 transitions. Word has length 65 [2022-07-21 08:05:02,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:02,113 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 3158 transitions. [2022-07-21 08:05:02,113 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) [2022-07-21 08:05:02,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 3158 transitions. [2022-07-21 08:05:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:05:02,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:02,119 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] [2022-07-21 08:05:02,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:05:02,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:02,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:02,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1889239193, now seen corresponding path program 1 times [2022-07-21 08:05:02,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:02,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280442500] [2022-07-21 08:05:02,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:02,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:02,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:02,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280442500] [2022-07-21 08:05:02,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280442500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:02,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:02,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:05:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231846497] [2022-07-21 08:05:02,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:02,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:05:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:05:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:05:02,198 INFO L87 Difference]: Start difference. First operand 2502 states and 3158 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) [2022-07-21 08:05:02,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:02,708 INFO L93 Difference]: Finished difference Result 5824 states and 7332 transitions. [2022-07-21 08:05:02,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:05:02,708 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 [2022-07-21 08:05:02,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:02,726 INFO L225 Difference]: With dead ends: 5824 [2022-07-21 08:05:02,727 INFO L226 Difference]: Without dead ends: 3461 [2022-07-21 08:05:02,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:05:02,735 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 419 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:02,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 854 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:05:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2022-07-21 08:05:02,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3207. [2022-07-21 08:05:02,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 2506 states have (on average 1.2637669592976855) internal successors, (3167), 2556 states have internal predecessors, (3167), 344 states have call successors, (344), 285 states have call predecessors, (344), 355 states have return successors, (494), 368 states have call predecessors, (494), 342 states have call successors, (494) [2022-07-21 08:05:02,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 4005 transitions. [2022-07-21 08:05:02,928 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 4005 transitions. Word has length 66 [2022-07-21 08:05:02,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:02,928 INFO L495 AbstractCegarLoop]: Abstraction has 3207 states and 4005 transitions. [2022-07-21 08:05:02,928 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) [2022-07-21 08:05:02,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 4005 transitions. [2022-07-21 08:05:02,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:05:02,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:02,930 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] [2022-07-21 08:05:02,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:05:02,931 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:02,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:02,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1540602375, now seen corresponding path program 1 times [2022-07-21 08:05:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:02,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025942629] [2022-07-21 08:05:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:02,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:02,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:02,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025942629] [2022-07-21 08:05:02,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025942629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:02,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:02,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:05:02,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669532176] [2022-07-21 08:05:02,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:02,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:05:02,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:02,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:05:02,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:05:02,994 INFO L87 Difference]: Start difference. First operand 3207 states and 4005 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:03,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:03,489 INFO L93 Difference]: Finished difference Result 3360 states and 4237 transitions. [2022-07-21 08:05:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:05:03,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 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 68 [2022-07-21 08:05:03,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:03,504 INFO L225 Difference]: With dead ends: 3360 [2022-07-21 08:05:03,505 INFO L226 Difference]: Without dead ends: 3239 [2022-07-21 08:05:03,507 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 [2022-07-21 08:05:03,510 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 382 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:03,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 628 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:05:03,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2022-07-21 08:05:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 3207. [2022-07-21 08:05:03,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3207 states, 2506 states have (on average 1.2633679169992018) internal successors, (3166), 2556 states have internal predecessors, (3166), 344 states have call successors, (344), 285 states have call predecessors, (344), 355 states have return successors, (494), 368 states have call predecessors, (494), 342 states have call successors, (494) [2022-07-21 08:05:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3207 states to 3207 states and 4004 transitions. [2022-07-21 08:05:03,700 INFO L78 Accepts]: Start accepts. Automaton has 3207 states and 4004 transitions. Word has length 68 [2022-07-21 08:05:03,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:03,701 INFO L495 AbstractCegarLoop]: Abstraction has 3207 states and 4004 transitions. [2022-07-21 08:05:03,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:03,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3207 states and 4004 transitions. [2022-07-21 08:05:03,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:05:03,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:03,703 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] [2022-07-21 08:05:03,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:05:03,704 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:03,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1338778441, now seen corresponding path program 1 times [2022-07-21 08:05:03,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:03,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478197765] [2022-07-21 08:05:03,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:03,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:03,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:03,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:03,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:03,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:03,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478197765] [2022-07-21 08:05:03,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478197765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:03,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:03,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:05:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773776877] [2022-07-21 08:05:03,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:03,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:05:03,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:05:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:05:03,774 INFO L87 Difference]: Start difference. First operand 3207 states and 4004 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:04,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:04,533 INFO L93 Difference]: Finished difference Result 3503 states and 4451 transitions. [2022-07-21 08:05:04,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:05:04,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 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 68 [2022-07-21 08:05:04,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:04,549 INFO L225 Difference]: With dead ends: 3503 [2022-07-21 08:05:04,549 INFO L226 Difference]: Without dead ends: 3386 [2022-07-21 08:05:04,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:05:04,553 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 621 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:04,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 803 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:05:04,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2022-07-21 08:05:04,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3323. [2022-07-21 08:05:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3323 states, 2604 states have (on average 1.271889400921659) internal successors, (3312), 2655 states have internal predecessors, (3312), 355 states have call successors, (355), 291 states have call predecessors, (355), 362 states have return successors, (508), 379 states have call predecessors, (508), 353 states have call successors, (508) [2022-07-21 08:05:04,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3323 states to 3323 states and 4175 transitions. [2022-07-21 08:05:04,774 INFO L78 Accepts]: Start accepts. Automaton has 3323 states and 4175 transitions. Word has length 68 [2022-07-21 08:05:04,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:04,775 INFO L495 AbstractCegarLoop]: Abstraction has 3323 states and 4175 transitions. [2022-07-21 08:05:04,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:04,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3323 states and 4175 transitions. [2022-07-21 08:05:04,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:05:04,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:04,776 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] [2022-07-21 08:05:04,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:05:04,777 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:04,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1428854835, now seen corresponding path program 1 times [2022-07-21 08:05:04,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:04,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392644262] [2022-07-21 08:05:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:04,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:04,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:04,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392644262] [2022-07-21 08:05:04,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392644262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:04,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:04,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:05:04,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292085615] [2022-07-21 08:05:04,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:04,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:05:04,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:04,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:05:04,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:05:04,856 INFO L87 Difference]: Start difference. First operand 3323 states and 4175 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:05,849 INFO L93 Difference]: Finished difference Result 3766 states and 4835 transitions. [2022-07-21 08:05:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:05:05,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-21 08:05:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:05,867 INFO L225 Difference]: With dead ends: 3766 [2022-07-21 08:05:05,867 INFO L226 Difference]: Without dead ends: 3533 [2022-07-21 08:05:05,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:05:05,871 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 616 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:05,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1212 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:05:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3533 states. [2022-07-21 08:05:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3533 to 3432. [2022-07-21 08:05:06,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3432 states, 2695 states have (on average 1.277922077922078) internal successors, (3444), 2747 states have internal predecessors, (3444), 366 states have call successors, (366), 297 states have call predecessors, (366), 369 states have return successors, (521), 391 states have call predecessors, (521), 364 states have call successors, (521) [2022-07-21 08:05:06,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 4331 transitions. [2022-07-21 08:05:06,072 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 4331 transitions. Word has length 68 [2022-07-21 08:05:06,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:06,072 INFO L495 AbstractCegarLoop]: Abstraction has 3432 states and 4331 transitions. [2022-07-21 08:05:06,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:06,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 4331 transitions. [2022-07-21 08:05:06,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:05:06,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:06,074 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] [2022-07-21 08:05:06,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:05:06,074 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:06,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:06,075 INFO L85 PathProgramCache]: Analyzing trace with hash -552835829, now seen corresponding path program 1 times [2022-07-21 08:05:06,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:06,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477791899] [2022-07-21 08:05:06,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:06,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:06,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:06,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:06,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:06,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:06,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477791899] [2022-07-21 08:05:06,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477791899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:06,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:06,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:05:06,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695730431] [2022-07-21 08:05:06,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:06,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:05:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:06,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:05:06,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:05:06,157 INFO L87 Difference]: Start difference. First operand 3432 states and 4331 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:06,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:06,726 INFO L93 Difference]: Finished difference Result 3873 states and 4993 transitions. [2022-07-21 08:05:06,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:05:06,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-21 08:05:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:06,739 INFO L225 Difference]: With dead ends: 3873 [2022-07-21 08:05:06,739 INFO L226 Difference]: Without dead ends: 3531 [2022-07-21 08:05:06,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:05:06,741 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 612 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:06,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 670 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:05:06,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3531 states. [2022-07-21 08:05:06,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3531 to 3432. [2022-07-21 08:05:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3432 states, 2695 states have (on average 1.276808905380334) internal successors, (3441), 2747 states have internal predecessors, (3441), 366 states have call successors, (366), 297 states have call predecessors, (366), 369 states have return successors, (521), 391 states have call predecessors, (521), 364 states have call successors, (521) [2022-07-21 08:05:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3432 states to 3432 states and 4328 transitions. [2022-07-21 08:05:06,930 INFO L78 Accepts]: Start accepts. Automaton has 3432 states and 4328 transitions. Word has length 68 [2022-07-21 08:05:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:06,932 INFO L495 AbstractCegarLoop]: Abstraction has 3432 states and 4328 transitions. [2022-07-21 08:05:06,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3432 states and 4328 transitions. [2022-07-21 08:05:06,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:05:06,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:06,934 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] [2022-07-21 08:05:06,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:05:06,935 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:06,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:06,935 INFO L85 PathProgramCache]: Analyzing trace with hash 985504201, now seen corresponding path program 1 times [2022-07-21 08:05:06,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:06,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033262933] [2022-07-21 08:05:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:06,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:06,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:06,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:06,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:07,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:07,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:07,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033262933] [2022-07-21 08:05:07,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033262933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:07,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:07,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:05:07,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016530606] [2022-07-21 08:05:07,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:07,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:05:07,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:05:07,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:05:07,004 INFO L87 Difference]: Start difference. First operand 3432 states and 4328 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:08,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:08,015 INFO L93 Difference]: Finished difference Result 4197 states and 5449 transitions. [2022-07-21 08:05:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:05:08,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-21 08:05:08,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:08,046 INFO L225 Difference]: With dead ends: 4197 [2022-07-21 08:05:08,046 INFO L226 Difference]: Without dead ends: 3855 [2022-07-21 08:05:08,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:05:08,052 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 658 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:08,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1182 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:05:08,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2022-07-21 08:05:08,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3641. [2022-07-21 08:05:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3641 states, 2870 states have (on average 1.2871080139372821) internal successors, (3694), 2924 states have internal predecessors, (3694), 386 states have call successors, (386), 309 states have call predecessors, (386), 383 states have return successors, (549), 413 states have call predecessors, (549), 384 states have call successors, (549) [2022-07-21 08:05:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 4629 transitions. [2022-07-21 08:05:08,266 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 4629 transitions. Word has length 68 [2022-07-21 08:05:08,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:08,266 INFO L495 AbstractCegarLoop]: Abstraction has 3641 states and 4629 transitions. [2022-07-21 08:05:08,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 4629 transitions. [2022-07-21 08:05:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:05:08,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:08,270 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] [2022-07-21 08:05:08,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:05:08,270 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:08,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:08,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1043081909, now seen corresponding path program 1 times [2022-07-21 08:05:08,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:08,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002684046] [2022-07-21 08:05:08,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:08,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:08,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:08,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:08,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:08,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:08,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:08,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002684046] [2022-07-21 08:05:08,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002684046] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:08,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:08,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:05:08,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394887473] [2022-07-21 08:05:08,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:08,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:05:08,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:08,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:05:08,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:05:08,337 INFO L87 Difference]: Start difference. First operand 3641 states and 4629 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:09,378 INFO L93 Difference]: Finished difference Result 4900 states and 6456 transitions. [2022-07-21 08:05:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:05:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-21 08:05:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:09,398 INFO L225 Difference]: With dead ends: 4900 [2022-07-21 08:05:09,398 INFO L226 Difference]: Without dead ends: 4349 [2022-07-21 08:05:09,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:05:09,404 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 604 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:09,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1194 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 08:05:09,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2022-07-21 08:05:09,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 4062. [2022-07-21 08:05:09,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4062 states, 3225 states have (on average 1.3048062015503876) internal successors, (4208), 3283 states have internal predecessors, (4208), 424 states have call successors, (424), 333 states have call predecessors, (424), 411 states have return successors, (609), 455 states have call predecessors, (609), 422 states have call successors, (609) [2022-07-21 08:05:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 5241 transitions. [2022-07-21 08:05:09,657 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 5241 transitions. Word has length 68 [2022-07-21 08:05:09,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:09,657 INFO L495 AbstractCegarLoop]: Abstraction has 4062 states and 5241 transitions. [2022-07-21 08:05:09,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:09,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 5241 transitions. [2022-07-21 08:05:09,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:05:09,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:09,660 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] [2022-07-21 08:05:09,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:05:09,660 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:09,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1524162167, now seen corresponding path program 1 times [2022-07-21 08:05:09,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:09,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515164522] [2022-07-21 08:05:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:09,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:09,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:09,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:09,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:09,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515164522] [2022-07-21 08:05:09,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515164522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:09,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:09,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:05:09,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098039700] [2022-07-21 08:05:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:09,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:05:09,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:09,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:05:09,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:05:09,747 INFO L87 Difference]: Start difference. First operand 4062 states and 5241 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:10,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:10,523 INFO L93 Difference]: Finished difference Result 5571 states and 7468 transitions. [2022-07-21 08:05:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:05:10,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-21 08:05:10,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:10,554 INFO L225 Difference]: With dead ends: 5571 [2022-07-21 08:05:10,555 INFO L226 Difference]: Without dead ends: 4600 [2022-07-21 08:05:10,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:05:10,564 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 363 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:10,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1035 Invalid, 846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:05:10,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4600 states. [2022-07-21 08:05:10,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4600 to 4089. [2022-07-21 08:05:10,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4089 states, 3252 states have (on average 1.3022755227552276) internal successors, (4235), 3310 states have internal predecessors, (4235), 424 states have call successors, (424), 333 states have call predecessors, (424), 411 states have return successors, (609), 455 states have call predecessors, (609), 422 states have call successors, (609) [2022-07-21 08:05:10,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 5268 transitions. [2022-07-21 08:05:10,806 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 5268 transitions. Word has length 68 [2022-07-21 08:05:10,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:10,807 INFO L495 AbstractCegarLoop]: Abstraction has 4089 states and 5268 transitions. [2022-07-21 08:05:10,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:10,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 5268 transitions. [2022-07-21 08:05:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-21 08:05:10,809 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:10,809 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] [2022-07-21 08:05:10,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:05:10,809 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:10,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:10,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1100515445, now seen corresponding path program 1 times [2022-07-21 08:05:10,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:10,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545441125] [2022-07-21 08:05:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:10,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:10,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:10,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:10,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:10,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:10,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:10,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545441125] [2022-07-21 08:05:10,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545441125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:10,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:10,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:05:10,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62141542] [2022-07-21 08:05:10,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:10,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:05:10,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:10,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:05:10,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:05:10,921 INFO L87 Difference]: Start difference. First operand 4089 states and 5268 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:12,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:12,481 INFO L93 Difference]: Finished difference Result 7556 states and 10472 transitions. [2022-07-21 08:05:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 08:05:12,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 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 68 [2022-07-21 08:05:12,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:12,512 INFO L225 Difference]: With dead ends: 7556 [2022-07-21 08:05:12,513 INFO L226 Difference]: Without dead ends: 6558 [2022-07-21 08:05:12,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:05:12,522 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 1369 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:12,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 1057 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:05:12,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6558 states. [2022-07-21 08:05:12,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6558 to 6007. [2022-07-21 08:05:12,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6007 states, 4848 states have (on average 1.3401402640264026) internal successors, (6497), 4937 states have internal predecessors, (6497), 616 states have call successors, (616), 447 states have call predecessors, (616), 541 states have return successors, (918), 632 states have call predecessors, (918), 614 states have call successors, (918) [2022-07-21 08:05:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6007 states to 6007 states and 8031 transitions. [2022-07-21 08:05:12,896 INFO L78 Accepts]: Start accepts. Automaton has 6007 states and 8031 transitions. Word has length 68 [2022-07-21 08:05:12,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:12,896 INFO L495 AbstractCegarLoop]: Abstraction has 6007 states and 8031 transitions. [2022-07-21 08:05:12,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:05:12,896 INFO L276 IsEmpty]: Start isEmpty. Operand 6007 states and 8031 transitions. [2022-07-21 08:05:12,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 08:05:12,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:12,899 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] [2022-07-21 08:05:12,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:05:12,899 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:12,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:12,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1248585640, now seen corresponding path program 1 times [2022-07-21 08:05:12,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:12,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869254500] [2022-07-21 08:05:12,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:12,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:12,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:12,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:12,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:12,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:12,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:12,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869254500] [2022-07-21 08:05:12,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869254500] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:12,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:12,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:05:12,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318576565] [2022-07-21 08:05:12,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:12,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:05:12,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:12,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:05:12,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:05:12,949 INFO L87 Difference]: Start difference. First operand 6007 states and 8031 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) [2022-07-21 08:05:13,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:13,536 INFO L93 Difference]: Finished difference Result 9593 states and 12461 transitions. [2022-07-21 08:05:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:05:13,537 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 [2022-07-21 08:05:13,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:13,559 INFO L225 Difference]: With dead ends: 9593 [2022-07-21 08:05:13,559 INFO L226 Difference]: Without dead ends: 6523 [2022-07-21 08:05:13,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:05:13,570 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 558 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:13,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 798 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:05:13,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2022-07-21 08:05:13,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6290. [2022-07-21 08:05:13,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6290 states, 5073 states have (on average 1.3335304553518628) internal successors, (6765), 5165 states have internal predecessors, (6765), 644 states have call successors, (644), 472 states have call predecessors, (644), 571 states have return successors, (952), 662 states have call predecessors, (952), 642 states have call successors, (952) [2022-07-21 08:05:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6290 states to 6290 states and 8361 transitions. [2022-07-21 08:05:13,951 INFO L78 Accepts]: Start accepts. Automaton has 6290 states and 8361 transitions. Word has length 72 [2022-07-21 08:05:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:13,951 INFO L495 AbstractCegarLoop]: Abstraction has 6290 states and 8361 transitions. [2022-07-21 08:05:13,952 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) [2022-07-21 08:05:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 6290 states and 8361 transitions. [2022-07-21 08:05:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 08:05:13,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:13,954 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] [2022-07-21 08:05:13,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:05:13,955 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:13,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:13,955 INFO L85 PathProgramCache]: Analyzing trace with hash -567645225, now seen corresponding path program 1 times [2022-07-21 08:05:13,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:13,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414998229] [2022-07-21 08:05:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:13,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:13,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:14,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:14,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:14,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:14,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:14,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:14,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414998229] [2022-07-21 08:05:14,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414998229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:14,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:14,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:05:14,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306133620] [2022-07-21 08:05:14,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:14,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:05:14,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:14,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:05:14,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:05:14,027 INFO L87 Difference]: Start difference. First operand 6290 states and 8361 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) [2022-07-21 08:05:14,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:14,661 INFO L93 Difference]: Finished difference Result 7344 states and 9628 transitions. [2022-07-21 08:05:14,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:05:14,663 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 [2022-07-21 08:05:14,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:14,688 INFO L225 Difference]: With dead ends: 7344 [2022-07-21 08:05:14,688 INFO L226 Difference]: Without dead ends: 7341 [2022-07-21 08:05:14,694 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 [2022-07-21 08:05:14,694 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 1015 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:14,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 634 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:05:14,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7341 states. [2022-07-21 08:05:15,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7341 to 7047. [2022-07-21 08:05:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7047 states, 5651 states have (on average 1.3208281720049548) internal successors, (7464), 5750 states have internal predecessors, (7464), 727 states have call successors, (727), 544 states have call predecessors, (727), 667 states have return successors, (1080), 762 states have call predecessors, (1080), 726 states have call successors, (1080) [2022-07-21 08:05:15,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7047 states to 7047 states and 9271 transitions. [2022-07-21 08:05:15,189 INFO L78 Accepts]: Start accepts. Automaton has 7047 states and 9271 transitions. Word has length 73 [2022-07-21 08:05:15,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:15,189 INFO L495 AbstractCegarLoop]: Abstraction has 7047 states and 9271 transitions. [2022-07-21 08:05:15,190 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) [2022-07-21 08:05:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 7047 states and 9271 transitions. [2022-07-21 08:05:15,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 08:05:15,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:15,192 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] [2022-07-21 08:05:15,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:05:15,193 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash -417832830, now seen corresponding path program 1 times [2022-07-21 08:05:15,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:15,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041757524] [2022-07-21 08:05:15,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:15,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:15,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:15,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:15,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:15,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041757524] [2022-07-21 08:05:15,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041757524] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:15,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512440370] [2022-07-21 08:05:15,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:15,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:15,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:15,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:15,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:05:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:15,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 08:05:15,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:15,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:05:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:15,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512440370] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:05:15,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:05:15,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-21 08:05:15,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418098661] [2022-07-21 08:05:15,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:05:15,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:05:15,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:15,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:05:15,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:05:15,898 INFO L87 Difference]: Start difference. First operand 7047 states and 9271 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) [2022-07-21 08:05:17,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:17,765 INFO L93 Difference]: Finished difference Result 11466 states and 14645 transitions. [2022-07-21 08:05:17,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:05:17,765 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 [2022-07-21 08:05:17,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:17,804 INFO L225 Difference]: With dead ends: 11466 [2022-07-21 08:05:17,804 INFO L226 Difference]: Without dead ends: 11463 [2022-07-21 08:05:17,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-21 08:05:17,813 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1183 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:17,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1239 Valid, 1518 Invalid, 1736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:05:17,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11463 states. [2022-07-21 08:05:18,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11463 to 10606. [2022-07-21 08:05:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10606 states, 8436 states have (on average 1.2917259364627787) internal successors, (10897), 8586 states have internal predecessors, (10897), 1097 states have call successors, (1097), 869 states have call predecessors, (1097), 1071 states have return successors, (1626), 1160 states have call predecessors, (1626), 1096 states have call successors, (1626) [2022-07-21 08:05:18,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10606 states to 10606 states and 13620 transitions. [2022-07-21 08:05:18,482 INFO L78 Accepts]: Start accepts. Automaton has 10606 states and 13620 transitions. Word has length 74 [2022-07-21 08:05:18,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:18,483 INFO L495 AbstractCegarLoop]: Abstraction has 10606 states and 13620 transitions. [2022-07-21 08:05:18,483 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) [2022-07-21 08:05:18,483 INFO L276 IsEmpty]: Start isEmpty. Operand 10606 states and 13620 transitions. [2022-07-21 08:05:18,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 08:05:18,486 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:18,486 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] [2022-07-21 08:05:18,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:05:18,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:18,712 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:18,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1736050409, now seen corresponding path program 2 times [2022-07-21 08:05:18,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:18,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511386270] [2022-07-21 08:05:18,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:18,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:18,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:18,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:18,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:18,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:18,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:18,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:18,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:18,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:18,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:18,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:05:18,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:18,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511386270] [2022-07-21 08:05:18,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511386270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:18,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:18,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:05:18,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397877915] [2022-07-21 08:05:18,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:18,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:05:18,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:18,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:05:18,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:05:18,764 INFO L87 Difference]: Start difference. First operand 10606 states and 13620 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) [2022-07-21 08:05:19,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:19,493 INFO L93 Difference]: Finished difference Result 13615 states and 17344 transitions. [2022-07-21 08:05:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:05:19,494 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 [2022-07-21 08:05:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:19,520 INFO L225 Difference]: With dead ends: 13615 [2022-07-21 08:05:19,520 INFO L226 Difference]: Without dead ends: 6817 [2022-07-21 08:05:19,536 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 [2022-07-21 08:05:19,537 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 627 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:19,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 702 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:05:19,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6817 states. [2022-07-21 08:05:19,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6817 to 5791. [2022-07-21 08:05:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5791 states, 4687 states have (on average 1.3266481758054192) internal successors, (6218), 4759 states have internal predecessors, (6218), 597 states have call successors, (597), 434 states have call predecessors, (597), 505 states have return successors, (852), 607 states have call predecessors, (852), 596 states have call successors, (852) [2022-07-21 08:05:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5791 states to 5791 states and 7667 transitions. [2022-07-21 08:05:19,909 INFO L78 Accepts]: Start accepts. Automaton has 5791 states and 7667 transitions. Word has length 77 [2022-07-21 08:05:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:19,910 INFO L495 AbstractCegarLoop]: Abstraction has 5791 states and 7667 transitions. [2022-07-21 08:05:19,910 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) [2022-07-21 08:05:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5791 states and 7667 transitions. [2022-07-21 08:05:19,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 08:05:19,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:19,914 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] [2022-07-21 08:05:19,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:05:19,914 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:19,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:19,915 INFO L85 PathProgramCache]: Analyzing trace with hash 413429076, now seen corresponding path program 1 times [2022-07-21 08:05:19,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:19,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945429841] [2022-07-21 08:05:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:19,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:19,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:19,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:19,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:19,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:20,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:05:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:05:20,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:20,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945429841] [2022-07-21 08:05:20,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945429841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:20,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:20,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:05:20,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822216751] [2022-07-21 08:05:20,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:20,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:05:20,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:20,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:05:20,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:20,013 INFO L87 Difference]: Start difference. First operand 5791 states and 7667 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) [2022-07-21 08:05:21,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:21,174 INFO L93 Difference]: Finished difference Result 11515 states and 14591 transitions. [2022-07-21 08:05:21,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:05:21,174 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 [2022-07-21 08:05:21,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:21,201 INFO L225 Difference]: With dead ends: 11515 [2022-07-21 08:05:21,202 INFO L226 Difference]: Without dead ends: 7719 [2022-07-21 08:05:21,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:05:21,215 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1080 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:21,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 980 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:05:21,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7719 states. [2022-07-21 08:05:21,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7719 to 7488. [2022-07-21 08:05:21,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7488 states, 5981 states have (on average 1.2909212506269854) internal successors, (7721), 6090 states have internal predecessors, (7721), 781 states have call successors, (781), 592 states have call predecessors, (781), 724 states have return successors, (1173), 815 states have call predecessors, (1173), 780 states have call successors, (1173) [2022-07-21 08:05:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7488 states to 7488 states and 9675 transitions. [2022-07-21 08:05:21,782 INFO L78 Accepts]: Start accepts. Automaton has 7488 states and 9675 transitions. Word has length 84 [2022-07-21 08:05:21,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:21,782 INFO L495 AbstractCegarLoop]: Abstraction has 7488 states and 9675 transitions. [2022-07-21 08:05:21,783 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) [2022-07-21 08:05:21,783 INFO L276 IsEmpty]: Start isEmpty. Operand 7488 states and 9675 transitions. [2022-07-21 08:05:21,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 08:05:21,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:21,795 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] [2022-07-21 08:05:21,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:05:21,796 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:21,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2108218901, now seen corresponding path program 1 times [2022-07-21 08:05:21,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:21,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419510180] [2022-07-21 08:05:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:21,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:21,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:21,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:21,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:21,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:21,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:21,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:21,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 08:05:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:05:21,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:21,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419510180] [2022-07-21 08:05:21,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419510180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:21,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:21,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:05:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509049095] [2022-07-21 08:05:21,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:21,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:05:21,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:05:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:05:21,887 INFO L87 Difference]: Start difference. First operand 7488 states and 9675 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) [2022-07-21 08:05:22,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:22,939 INFO L93 Difference]: Finished difference Result 10367 states and 13159 transitions. [2022-07-21 08:05:22,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:05:22,941 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 [2022-07-21 08:05:22,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:22,962 INFO L225 Difference]: With dead ends: 10367 [2022-07-21 08:05:22,963 INFO L226 Difference]: Without dead ends: 6553 [2022-07-21 08:05:22,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:05:22,975 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 1143 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1312 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:22,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1312 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:05:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6553 states. [2022-07-21 08:05:23,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6553 to 6176. [2022-07-21 08:05:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6176 states, 4953 states have (on average 1.301029678982435) internal successors, (6444), 5045 states have internal predecessors, (6444), 639 states have call successors, (639), 468 states have call predecessors, (639), 582 states have return successors, (938), 672 states have call predecessors, (938), 638 states have call successors, (938) [2022-07-21 08:05:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6176 states to 6176 states and 8021 transitions. [2022-07-21 08:05:23,403 INFO L78 Accepts]: Start accepts. Automaton has 6176 states and 8021 transitions. Word has length 93 [2022-07-21 08:05:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:23,404 INFO L495 AbstractCegarLoop]: Abstraction has 6176 states and 8021 transitions. [2022-07-21 08:05:23,404 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) [2022-07-21 08:05:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 6176 states and 8021 transitions. [2022-07-21 08:05:23,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 08:05:23,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:23,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:23,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:05:23,412 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:23,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1351020765, now seen corresponding path program 1 times [2022-07-21 08:05:23,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:23,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547529036] [2022-07-21 08:05:23,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:23,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:23,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:23,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:23,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:23,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:23,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:23,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 08:05:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:05:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:23,494 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 08:05:23,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:23,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547529036] [2022-07-21 08:05:23,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547529036] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:23,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189906856] [2022-07-21 08:05:23,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:23,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:23,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:23,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:23,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:05:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:23,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:05:23,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 08:05:23,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:23,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189906856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:23,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:23,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 08:05:23,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817491008] [2022-07-21 08:05:23,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:23,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:05:23,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:23,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:05:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:23,606 INFO L87 Difference]: Start difference. First operand 6176 states and 8021 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 08:05:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:24,041 INFO L93 Difference]: Finished difference Result 9315 states and 12655 transitions. [2022-07-21 08:05:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:05:24,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-07-21 08:05:24,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:24,064 INFO L225 Difference]: With dead ends: 9315 [2022-07-21 08:05:24,065 INFO L226 Difference]: Without dead ends: 6706 [2022-07-21 08:05:24,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:24,077 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 142 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:24,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 759 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:05:24,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6706 states. [2022-07-21 08:05:24,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6706 to 6706. [2022-07-21 08:05:24,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6706 states, 5400 states have (on average 1.3101851851851851) internal successors, (7075), 5496 states have internal predecessors, (7075), 688 states have call successors, (688), 498 states have call predecessors, (688), 616 states have return successors, (1016), 721 states have call predecessors, (1016), 687 states have call successors, (1016) [2022-07-21 08:05:24,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6706 states to 6706 states and 8779 transitions. [2022-07-21 08:05:24,475 INFO L78 Accepts]: Start accepts. Automaton has 6706 states and 8779 transitions. Word has length 110 [2022-07-21 08:05:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:24,476 INFO L495 AbstractCegarLoop]: Abstraction has 6706 states and 8779 transitions. [2022-07-21 08:05:24,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 08:05:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 6706 states and 8779 transitions. [2022-07-21 08:05:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:05:24,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:24,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:24,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:05:24,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-21 08:05:24,708 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:24,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2067289164, now seen corresponding path program 1 times [2022-07-21 08:05:24,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:24,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507776082] [2022-07-21 08:05:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:24,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:05:24,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 08:05:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:05:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 08:05:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:05:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 08:05:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 08:05:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 08:05:24,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:24,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507776082] [2022-07-21 08:05:24,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507776082] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:24,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805593827] [2022-07-21 08:05:24,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:24,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:24,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:24,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:24,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:05:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:24,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 08:05:24,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 08:05:24,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:24,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805593827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:24,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:24,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-21 08:05:24,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149461390] [2022-07-21 08:05:24,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:24,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:05:24,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:24,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:05:24,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:05:24,965 INFO L87 Difference]: Start difference. First operand 6706 states and 8779 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 08:05:25,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:25,269 INFO L93 Difference]: Finished difference Result 8385 states and 10792 transitions. [2022-07-21 08:05:25,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:05:25,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-21 08:05:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:25,282 INFO L225 Difference]: With dead ends: 8385 [2022-07-21 08:05:25,282 INFO L226 Difference]: Without dead ends: 5148 [2022-07-21 08:05:25,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:05:25,290 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 34 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:25,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1515 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:05:25,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5148 states. [2022-07-21 08:05:25,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5148 to 5025. [2022-07-21 08:05:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5025 states, 4161 states have (on average 1.3470319634703196) internal successors, (5605), 4218 states have internal predecessors, (5605), 480 states have call successors, (480), 315 states have call predecessors, (480), 382 states have return successors, (722), 499 states have call predecessors, (722), 479 states have call successors, (722) [2022-07-21 08:05:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5025 states to 5025 states and 6807 transitions. [2022-07-21 08:05:25,599 INFO L78 Accepts]: Start accepts. Automaton has 5025 states and 6807 transitions. Word has length 145 [2022-07-21 08:05:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:25,599 INFO L495 AbstractCegarLoop]: Abstraction has 5025 states and 6807 transitions. [2022-07-21 08:05:25,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 08:05:25,600 INFO L276 IsEmpty]: Start isEmpty. Operand 5025 states and 6807 transitions. [2022-07-21 08:05:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-21 08:05:25,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:25,609 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:25,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 08:05:25,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:25,823 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:25,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:25,824 INFO L85 PathProgramCache]: Analyzing trace with hash -780820679, now seen corresponding path program 1 times [2022-07-21 08:05:25,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:25,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731167042] [2022-07-21 08:05:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:25,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:25,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:25,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:25,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 08:05:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:25,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:25,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-21 08:05:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:25,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:25,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 08:05:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 08:05:25,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:25,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731167042] [2022-07-21 08:05:25,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731167042] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:25,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541921091] [2022-07-21 08:05:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:25,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:25,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:25,913 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:25,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 08:05:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:26,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:05:26,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 08:05:26,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:26,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541921091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:26,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:26,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 08:05:26,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671884683] [2022-07-21 08:05:26,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:26,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:05:26,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:26,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:05:26,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:26,116 INFO L87 Difference]: Start difference. First operand 5025 states and 6807 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 08:05:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:26,570 INFO L93 Difference]: Finished difference Result 11727 states and 16588 transitions. [2022-07-21 08:05:26,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:05:26,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-07-21 08:05:26,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:26,592 INFO L225 Difference]: With dead ends: 11727 [2022-07-21 08:05:26,593 INFO L226 Difference]: Without dead ends: 8281 [2022-07-21 08:05:26,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:26,607 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 223 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:26,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 477 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:05:26,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2022-07-21 08:05:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 8213. [2022-07-21 08:05:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8213 states, 6839 states have (on average 1.3749086123702297) internal successors, (9403), 6939 states have internal predecessors, (9403), 772 states have call successors, (772), 505 states have call predecessors, (772), 600 states have return successors, (1166), 776 states have call predecessors, (1166), 771 states have call successors, (1166) [2022-07-21 08:05:27,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8213 states to 8213 states and 11341 transitions. [2022-07-21 08:05:27,134 INFO L78 Accepts]: Start accepts. Automaton has 8213 states and 11341 transitions. Word has length 142 [2022-07-21 08:05:27,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:27,134 INFO L495 AbstractCegarLoop]: Abstraction has 8213 states and 11341 transitions. [2022-07-21 08:05:27,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 08:05:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 8213 states and 11341 transitions. [2022-07-21 08:05:27,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-21 08:05:27,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:27,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:27,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 08:05:27,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:27,370 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:27,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:27,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1249840909, now seen corresponding path program 1 times [2022-07-21 08:05:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:27,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030310661] [2022-07-21 08:05:27,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:27,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 08:05:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-21 08:05:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 08:05:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 08:05:27,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:27,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030310661] [2022-07-21 08:05:27,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030310661] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:27,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443810055] [2022-07-21 08:05:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:27,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:27,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:27,455 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:27,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 08:05:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:27,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:05:27,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:27,645 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 08:05:27,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:27,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443810055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:27,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:27,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-21 08:05:27,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051012801] [2022-07-21 08:05:27,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:27,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:05:27,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:05:27,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:27,648 INFO L87 Difference]: Start difference. First operand 8213 states and 11341 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 08:05:28,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:28,108 INFO L93 Difference]: Finished difference Result 15445 states and 21897 transitions. [2022-07-21 08:05:28,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:05:28,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 142 [2022-07-21 08:05:28,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:28,130 INFO L225 Difference]: With dead ends: 15445 [2022-07-21 08:05:28,130 INFO L226 Difference]: Without dead ends: 11287 [2022-07-21 08:05:28,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:28,141 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 224 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:28,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 485 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:05:28,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11287 states. [2022-07-21 08:05:28,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11287 to 11189. [2022-07-21 08:05:28,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11189 states, 9340 states have (on average 1.386830835117773) internal successors, (12953), 9474 states have internal predecessors, (12953), 1048 states have call successors, (1048), 680 states have call predecessors, (1048), 799 states have return successors, (1561), 1042 states have call predecessors, (1561), 1047 states have call successors, (1561) [2022-07-21 08:05:28,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11189 states to 11189 states and 15562 transitions. [2022-07-21 08:05:28,742 INFO L78 Accepts]: Start accepts. Automaton has 11189 states and 15562 transitions. Word has length 142 [2022-07-21 08:05:28,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:28,742 INFO L495 AbstractCegarLoop]: Abstraction has 11189 states and 15562 transitions. [2022-07-21 08:05:28,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 2 states have internal predecessors, (103), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 08:05:28,742 INFO L276 IsEmpty]: Start isEmpty. Operand 11189 states and 15562 transitions. [2022-07-21 08:05:28,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 08:05:28,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:28,757 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:28,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-21 08:05:28,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-21 08:05:28,958 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:28,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:28,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1963898390, now seen corresponding path program 1 times [2022-07-21 08:05:28,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:28,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259922376] [2022-07-21 08:05:28,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:28,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:28,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:05:29,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:05:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 08:05:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:05:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 08:05:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 08:05:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 08:05:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 08:05:29,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:29,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259922376] [2022-07-21 08:05:29,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259922376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:29,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:29,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:05:29,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672952106] [2022-07-21 08:05:29,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:29,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:05:29,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:29,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:05:29,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:05:29,053 INFO L87 Difference]: Start difference. First operand 11189 states and 15562 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 08:05:29,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:29,834 INFO L93 Difference]: Finished difference Result 12472 states and 17082 transitions. [2022-07-21 08:05:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:05:29,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-21 08:05:29,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:29,853 INFO L225 Difference]: With dead ends: 12472 [2022-07-21 08:05:29,853 INFO L226 Difference]: Without dead ends: 11082 [2022-07-21 08:05:29,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:05:29,858 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 277 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:29,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1087 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:05:29,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2022-07-21 08:05:30,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 10936. [2022-07-21 08:05:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10936 states, 9138 states have (on average 1.3923177938279712) internal successors, (12723), 9272 states have internal predecessors, (12723), 1023 states have call successors, (1023), 659 states have call predecessors, (1023), 773 states have return successors, (1523), 1012 states have call predecessors, (1523), 1022 states have call successors, (1523) [2022-07-21 08:05:30,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10936 states to 10936 states and 15269 transitions. [2022-07-21 08:05:30,336 INFO L78 Accepts]: Start accepts. Automaton has 10936 states and 15269 transitions. Word has length 159 [2022-07-21 08:05:30,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:30,337 INFO L495 AbstractCegarLoop]: Abstraction has 10936 states and 15269 transitions. [2022-07-21 08:05:30,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 08:05:30,337 INFO L276 IsEmpty]: Start isEmpty. Operand 10936 states and 15269 transitions. [2022-07-21 08:05:30,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 08:05:30,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:30,347 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:30,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:05:30,348 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:30,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:30,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2024023184, now seen corresponding path program 1 times [2022-07-21 08:05:30,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:30,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287196480] [2022-07-21 08:05:30,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:30,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:05:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:05:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:05:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:05:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:05:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 08:05:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 08:05:30,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:05:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:05:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 08:05:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 08:05:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:05:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 08:05:30,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:30,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287196480] [2022-07-21 08:05:30,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287196480] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:30,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582691202] [2022-07-21 08:05:30,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:30,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:30,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:30,460 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:30,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 08:05:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:30,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 08:05:30,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:30,691 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 08:05:30,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:30,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582691202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:30,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:30,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-07-21 08:05:30,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479341333] [2022-07-21 08:05:30,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:30,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:05:30,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:30,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:05:30,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:05:30,693 INFO L87 Difference]: Start difference. First operand 10936 states and 15269 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 08:05:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:31,349 INFO L93 Difference]: Finished difference Result 13262 states and 18077 transitions. [2022-07-21 08:05:31,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:05:31,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 162 [2022-07-21 08:05:31,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:31,371 INFO L225 Difference]: With dead ends: 13262 [2022-07-21 08:05:31,371 INFO L226 Difference]: Without dead ends: 11852 [2022-07-21 08:05:31,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:05:31,378 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 176 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:31,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 602 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:05:31,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11852 states. [2022-07-21 08:05:31,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11852 to 11810. [2022-07-21 08:05:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11810 states, 9869 states have (on average 1.3739993920356672) internal successors, (13560), 10007 states have internal predecessors, (13560), 1093 states have call successors, (1093), 710 states have call predecessors, (1093), 846 states have return successors, (1634), 1100 states have call predecessors, (1634), 1092 states have call successors, (1634) [2022-07-21 08:05:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11810 states to 11810 states and 16287 transitions. [2022-07-21 08:05:31,931 INFO L78 Accepts]: Start accepts. Automaton has 11810 states and 16287 transitions. Word has length 162 [2022-07-21 08:05:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:31,931 INFO L495 AbstractCegarLoop]: Abstraction has 11810 states and 16287 transitions. [2022-07-21 08:05:31,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 08:05:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 11810 states and 16287 transitions. [2022-07-21 08:05:31,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 08:05:31,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:31,943 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:31,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 08:05:32,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-21 08:05:32,145 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:32,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:32,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1155161780, now seen corresponding path program 1 times [2022-07-21 08:05:32,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:32,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046415849] [2022-07-21 08:05:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:32,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 08:05:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 08:05:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 08:05:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 08:05:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-21 08:05:32,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:32,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046415849] [2022-07-21 08:05:32,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046415849] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:32,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227204585] [2022-07-21 08:05:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:32,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:32,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:32,240 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:32,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 08:05:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:32,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:05:32,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:32,433 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-21 08:05:32,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:32,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227204585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:32,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:32,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 08:05:32,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645716719] [2022-07-21 08:05:32,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:32,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:05:32,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:32,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:05:32,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:32,436 INFO L87 Difference]: Start difference. First operand 11810 states and 16287 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 08:05:33,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:33,118 INFO L93 Difference]: Finished difference Result 20578 states and 28793 transitions. [2022-07-21 08:05:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:05:33,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 159 [2022-07-21 08:05:33,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:33,142 INFO L225 Difference]: With dead ends: 20578 [2022-07-21 08:05:33,142 INFO L226 Difference]: Without dead ends: 10969 [2022-07-21 08:05:33,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:33,160 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 243 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:33,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 340 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:05:33,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10969 states. [2022-07-21 08:05:33,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10969 to 10969. [2022-07-21 08:05:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10969 states, 9233 states have (on average 1.3275208491281274) internal successors, (12257), 9335 states have internal predecessors, (12257), 941 states have call successors, (941), 673 states have call predecessors, (941), 793 states have return successors, (1359), 968 states have call predecessors, (1359), 940 states have call successors, (1359) [2022-07-21 08:05:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10969 states to 10969 states and 14557 transitions. [2022-07-21 08:05:33,708 INFO L78 Accepts]: Start accepts. Automaton has 10969 states and 14557 transitions. Word has length 159 [2022-07-21 08:05:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:33,708 INFO L495 AbstractCegarLoop]: Abstraction has 10969 states and 14557 transitions. [2022-07-21 08:05:33,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 08:05:33,709 INFO L276 IsEmpty]: Start isEmpty. Operand 10969 states and 14557 transitions. [2022-07-21 08:05:33,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 08:05:33,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:33,719 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:33,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 08:05:33,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:33,920 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:33,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1290655762, now seen corresponding path program 1 times [2022-07-21 08:05:33,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:33,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639547253] [2022-07-21 08:05:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:33,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:33,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:33,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:33,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:34,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 08:05:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 08:05:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 08:05:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:34,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 08:05:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:34,040 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 08:05:34,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:34,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639547253] [2022-07-21 08:05:34,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639547253] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:34,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540399819] [2022-07-21 08:05:34,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:34,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:34,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:34,043 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:34,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 08:05:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:34,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:05:34,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 08:05:34,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:34,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540399819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:34,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:34,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 08:05:34,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671215748] [2022-07-21 08:05:34,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:34,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:05:34,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:34,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:05:34,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:34,166 INFO L87 Difference]: Start difference. First operand 10969 states and 14557 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 08:05:34,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:34,762 INFO L93 Difference]: Finished difference Result 20513 states and 27506 transitions. [2022-07-21 08:05:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:05:34,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 159 [2022-07-21 08:05:34,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:34,787 INFO L225 Difference]: With dead ends: 20513 [2022-07-21 08:05:34,787 INFO L226 Difference]: Without dead ends: 11745 [2022-07-21 08:05:34,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:34,803 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 282 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:34,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 486 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:05:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11745 states. [2022-07-21 08:05:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11745 to 11600. [2022-07-21 08:05:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11600 states, 9823 states have (on average 1.3008245953374733) internal successors, (12778), 9920 states have internal predecessors, (12778), 940 states have call successors, (940), 712 states have call predecessors, (940), 835 states have return successors, (1344), 975 states have call predecessors, (1344), 939 states have call successors, (1344) [2022-07-21 08:05:35,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11600 states to 11600 states and 15062 transitions. [2022-07-21 08:05:35,526 INFO L78 Accepts]: Start accepts. Automaton has 11600 states and 15062 transitions. Word has length 159 [2022-07-21 08:05:35,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:35,526 INFO L495 AbstractCegarLoop]: Abstraction has 11600 states and 15062 transitions. [2022-07-21 08:05:35,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 08:05:35,527 INFO L276 IsEmpty]: Start isEmpty. Operand 11600 states and 15062 transitions. [2022-07-21 08:05:35,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 08:05:35,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:35,535 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:35,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 08:05:35,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:35,736 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:35,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1913530268, now seen corresponding path program 1 times [2022-07-21 08:05:35,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:35,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078080153] [2022-07-21 08:05:35,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:35,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 08:05:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 08:05:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 08:05:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 08:05:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,814 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-21 08:05:35,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:35,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078080153] [2022-07-21 08:05:35,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078080153] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:35,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596651258] [2022-07-21 08:05:35,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:35,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:35,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:35,817 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:35,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 08:05:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:35,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:05:35,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:35,939 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 08:05:35,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:35,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596651258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:35,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:35,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 08:05:35,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356268832] [2022-07-21 08:05:35,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:35,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:05:35,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:05:35,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:35,941 INFO L87 Difference]: Start difference. First operand 11600 states and 15062 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 08:05:36,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:36,881 INFO L93 Difference]: Finished difference Result 28635 states and 38025 transitions. [2022-07-21 08:05:36,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:05:36,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 160 [2022-07-21 08:05:36,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:36,918 INFO L225 Difference]: With dead ends: 28635 [2022-07-21 08:05:36,918 INFO L226 Difference]: Without dead ends: 19236 [2022-07-21 08:05:36,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:36,933 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 140 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:36,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 763 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:05:36,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19236 states. [2022-07-21 08:05:37,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19236 to 19234. [2022-07-21 08:05:37,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19234 states, 16266 states have (on average 1.3089880732816919) internal successors, (21292), 16443 states have internal predecessors, (21292), 1595 states have call successors, (1595), 1181 states have call predecessors, (1595), 1371 states have return successors, (2507), 1625 states have call predecessors, (2507), 1594 states have call successors, (2507) [2022-07-21 08:05:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19234 states to 19234 states and 25394 transitions. [2022-07-21 08:05:38,037 INFO L78 Accepts]: Start accepts. Automaton has 19234 states and 25394 transitions. Word has length 160 [2022-07-21 08:05:38,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:38,038 INFO L495 AbstractCegarLoop]: Abstraction has 19234 states and 25394 transitions. [2022-07-21 08:05:38,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 08:05:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 19234 states and 25394 transitions. [2022-07-21 08:05:38,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 08:05:38,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:38,052 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-21 08:05:38,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-21 08:05:38,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:38,256 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:38,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:38,256 INFO L85 PathProgramCache]: Analyzing trace with hash -283261215, now seen corresponding path program 1 times [2022-07-21 08:05:38,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:38,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008838776] [2022-07-21 08:05:38,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:38,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 08:05:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 08:05:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 08:05:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 08:05:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-21 08:05:38,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:38,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008838776] [2022-07-21 08:05:38,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008838776] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:38,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406455584] [2022-07-21 08:05:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:38,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:38,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:38,347 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:38,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 08:05:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:38,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:05:38,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 08:05:38,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:38,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406455584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:38,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:38,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 08:05:38,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654503096] [2022-07-21 08:05:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:38,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:05:38,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:38,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:05:38,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:38,504 INFO L87 Difference]: Start difference. First operand 19234 states and 25394 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 08:05:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:40,463 INFO L93 Difference]: Finished difference Result 52609 states and 70950 transitions. [2022-07-21 08:05:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:05:40,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 160 [2022-07-21 08:05:40,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:40,566 INFO L225 Difference]: With dead ends: 52609 [2022-07-21 08:05:40,567 INFO L226 Difference]: Without dead ends: 35580 [2022-07-21 08:05:40,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:40,597 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 269 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:40,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 512 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:05:40,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35580 states. [2022-07-21 08:05:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35580 to 35376. [2022-07-21 08:05:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35376 states, 29954 states have (on average 1.3067369967283167) internal successors, (39142), 30291 states have internal predecessors, (39142), 2925 states have call successors, (2925), 2177 states have call predecessors, (2925), 2495 states have return successors, (5546), 2939 states have call predecessors, (5546), 2924 states have call successors, (5546) [2022-07-21 08:05:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35376 states to 35376 states and 47613 transitions. [2022-07-21 08:05:42,587 INFO L78 Accepts]: Start accepts. Automaton has 35376 states and 47613 transitions. Word has length 160 [2022-07-21 08:05:42,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:42,587 INFO L495 AbstractCegarLoop]: Abstraction has 35376 states and 47613 transitions. [2022-07-21 08:05:42,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 08:05:42,587 INFO L276 IsEmpty]: Start isEmpty. Operand 35376 states and 47613 transitions. [2022-07-21 08:05:42,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 08:05:42,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:42,620 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:42,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 08:05:42,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-21 08:05:42,820 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:42,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:42,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1408086307, now seen corresponding path program 1 times [2022-07-21 08:05:42,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:42,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947709639] [2022-07-21 08:05:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 08:05:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 08:05:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-21 08:05:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 08:05:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-21 08:05:42,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:42,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947709639] [2022-07-21 08:05:42,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947709639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:42,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:05:42,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:05:42,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974904292] [2022-07-21 08:05:42,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:42,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:05:42,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:42,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:05:42,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:05:42,887 INFO L87 Difference]: Start difference. First operand 35376 states and 47613 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:05:44,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:44,845 INFO L93 Difference]: Finished difference Result 64719 states and 87314 transitions. [2022-07-21 08:05:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:05:44,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 160 [2022-07-21 08:05:44,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:44,940 INFO L225 Difference]: With dead ends: 64719 [2022-07-21 08:05:44,941 INFO L226 Difference]: Without dead ends: 31546 [2022-07-21 08:05:44,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:05:44,992 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 409 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:44,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 592 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:05:45,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31546 states. [2022-07-21 08:05:47,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31546 to 29366. [2022-07-21 08:05:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29366 states, 24822 states have (on average 1.3066634437192812) internal successors, (32434), 25324 states have internal predecessors, (32434), 2247 states have call successors, (2247), 1669 states have call predecessors, (2247), 2295 states have return successors, (4633), 2388 states have call predecessors, (4633), 2246 states have call successors, (4633) [2022-07-21 08:05:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29366 states to 29366 states and 39314 transitions. [2022-07-21 08:05:47,088 INFO L78 Accepts]: Start accepts. Automaton has 29366 states and 39314 transitions. Word has length 160 [2022-07-21 08:05:47,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:47,089 INFO L495 AbstractCegarLoop]: Abstraction has 29366 states and 39314 transitions. [2022-07-21 08:05:47,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:05:47,089 INFO L276 IsEmpty]: Start isEmpty. Operand 29366 states and 39314 transitions. [2022-07-21 08:05:47,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 08:05:47,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:47,122 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:47,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 08:05:47,123 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash 984139709, now seen corresponding path program 1 times [2022-07-21 08:05:47,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:47,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713450889] [2022-07-21 08:05:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:47,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 08:05:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:05:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 08:05:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 08:05:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 08:05:47,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:47,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713450889] [2022-07-21 08:05:47,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713450889] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:47,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468107901] [2022-07-21 08:05:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:47,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:47,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:47,208 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:47,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 08:05:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:47,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:05:47,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 08:05:47,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:47,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468107901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:47,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:47,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 08:05:47,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615944217] [2022-07-21 08:05:47,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:47,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:05:47,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:47,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:05:47,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:47,374 INFO L87 Difference]: Start difference. First operand 29366 states and 39314 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 08:05:49,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:49,272 INFO L93 Difference]: Finished difference Result 47959 states and 66550 transitions. [2022-07-21 08:05:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:05:49,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 162 [2022-07-21 08:05:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:49,458 INFO L225 Difference]: With dead ends: 47959 [2022-07-21 08:05:49,458 INFO L226 Difference]: Without dead ends: 29450 [2022-07-21 08:05:49,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:49,494 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 129 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:49,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 709 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:05:49,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29450 states. [2022-07-21 08:05:51,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29450 to 29366. [2022-07-21 08:05:51,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29366 states, 24822 states have (on average 1.2836596567561034) internal successors, (31863), 25324 states have internal predecessors, (31863), 2247 states have call successors, (2247), 1669 states have call predecessors, (2247), 2295 states have return successors, (4633), 2388 states have call predecessors, (4633), 2246 states have call successors, (4633) [2022-07-21 08:05:51,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29366 states to 29366 states and 38743 transitions. [2022-07-21 08:05:51,440 INFO L78 Accepts]: Start accepts. Automaton has 29366 states and 38743 transitions. Word has length 162 [2022-07-21 08:05:51,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:51,441 INFO L495 AbstractCegarLoop]: Abstraction has 29366 states and 38743 transitions. [2022-07-21 08:05:51,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 08:05:51,441 INFO L276 IsEmpty]: Start isEmpty. Operand 29366 states and 38743 transitions. [2022-07-21 08:05:51,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 08:05:51,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:51,467 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:51,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 08:05:51,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-21 08:05:51,668 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:51,668 INFO L85 PathProgramCache]: Analyzing trace with hash 264046557, now seen corresponding path program 1 times [2022-07-21 08:05:51,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:51,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378743207] [2022-07-21 08:05:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:51,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 08:05:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:05:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 08:05:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 08:05:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 08:05:51,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:51,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378743207] [2022-07-21 08:05:51,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378743207] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:51,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32672017] [2022-07-21 08:05:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:51,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:51,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:51,764 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:51,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 08:05:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:51,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:05:51,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:51,920 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-21 08:05:51,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:51,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32672017] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:51,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:51,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 08:05:51,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662192841] [2022-07-21 08:05:51,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:51,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:05:51,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:51,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:05:51,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:51,922 INFO L87 Difference]: Start difference. First operand 29366 states and 38743 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 08:05:53,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:53,981 INFO L93 Difference]: Finished difference Result 52177 states and 70914 transitions. [2022-07-21 08:05:53,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:05:53,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 162 [2022-07-21 08:05:53,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:54,051 INFO L225 Difference]: With dead ends: 52177 [2022-07-21 08:05:54,051 INFO L226 Difference]: Without dead ends: 28558 [2022-07-21 08:05:54,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:05:54,087 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 256 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:54,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 336 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:05:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28558 states. [2022-07-21 08:05:55,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28558 to 20580. [2022-07-21 08:05:55,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20580 states, 17434 states have (on average 1.2317884593323392) internal successors, (21475), 17763 states have internal predecessors, (21475), 1543 states have call successors, (1543), 1171 states have call predecessors, (1543), 1601 states have return successors, (2924), 1653 states have call predecessors, (2924), 1542 states have call successors, (2924) [2022-07-21 08:05:55,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20580 states to 20580 states and 25942 transitions. [2022-07-21 08:05:55,631 INFO L78 Accepts]: Start accepts. Automaton has 20580 states and 25942 transitions. Word has length 162 [2022-07-21 08:05:55,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:55,632 INFO L495 AbstractCegarLoop]: Abstraction has 20580 states and 25942 transitions. [2022-07-21 08:05:55,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 08:05:55,632 INFO L276 IsEmpty]: Start isEmpty. Operand 20580 states and 25942 transitions. [2022-07-21 08:05:55,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-21 08:05:55,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:55,651 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:55,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 08:05:55,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-21 08:05:55,875 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:55,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash -909650319, now seen corresponding path program 1 times [2022-07-21 08:05:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:55,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927741850] [2022-07-21 08:05:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:55,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 08:05:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:05:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:05:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-21 08:05:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-21 08:05:55,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:55,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927741850] [2022-07-21 08:05:55,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927741850] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:55,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542289249] [2022-07-21 08:05:55,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:55,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:55,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:55,961 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:55,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 08:05:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:56,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 08:05:56,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:05:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-21 08:05:56,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:05:56,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542289249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:05:56,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:05:56,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-21 08:05:56,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145227278] [2022-07-21 08:05:56,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:05:56,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:05:56,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:05:56,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:05:56,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:05:56,137 INFO L87 Difference]: Start difference. First operand 20580 states and 25942 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 08:05:58,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:05:58,113 INFO L93 Difference]: Finished difference Result 37827 states and 48963 transitions. [2022-07-21 08:05:58,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:05:58,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-21 08:05:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:05:58,165 INFO L225 Difference]: With dead ends: 37827 [2022-07-21 08:05:58,165 INFO L226 Difference]: Without dead ends: 20182 [2022-07-21 08:05:58,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:05:58,188 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 376 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:05:58,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 569 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:05:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20182 states. [2022-07-21 08:05:59,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20182 to 18105. [2022-07-21 08:05:59,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18105 states, 15343 states have (on average 1.1979404288600666) internal successors, (18380), 15624 states have internal predecessors, (18380), 1351 states have call successors, (1351), 1031 states have call predecessors, (1351), 1409 states have return successors, (2444), 1453 states have call predecessors, (2444), 1350 states have call successors, (2444) [2022-07-21 08:05:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18105 states to 18105 states and 22175 transitions. [2022-07-21 08:05:59,565 INFO L78 Accepts]: Start accepts. Automaton has 18105 states and 22175 transitions. Word has length 164 [2022-07-21 08:05:59,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:05:59,565 INFO L495 AbstractCegarLoop]: Abstraction has 18105 states and 22175 transitions. [2022-07-21 08:05:59,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 08:05:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand 18105 states and 22175 transitions. [2022-07-21 08:05:59,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-21 08:05:59,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:05:59,575 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:05:59,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 08:05:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-21 08:05:59,776 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:05:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:05:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1663314291, now seen corresponding path program 1 times [2022-07-21 08:05:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:05:59,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190866154] [2022-07-21 08:05:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:59,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:05:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:05:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:05:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:05:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:05:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:05:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 08:05:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:05:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:05:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:05:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-21 08:05:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-21 08:05:59,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:05:59,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190866154] [2022-07-21 08:05:59,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190866154] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:05:59,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139125508] [2022-07-21 08:05:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:05:59,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:05:59,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:05:59,876 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:05:59,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 08:05:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:05:59,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 08:05:59,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:06:00,067 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-07-21 08:06:00,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:06:00,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139125508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:00,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:06:00,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-21 08:06:00,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163557799] [2022-07-21 08:06:00,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:00,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:06:00,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:00,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:06:00,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:06:00,071 INFO L87 Difference]: Start difference. First operand 18105 states and 22175 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 08:06:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:01,387 INFO L93 Difference]: Finished difference Result 27107 states and 33548 transitions. [2022-07-21 08:06:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:06:01,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-21 08:06:01,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:01,423 INFO L225 Difference]: With dead ends: 27107 [2022-07-21 08:06:01,423 INFO L226 Difference]: Without dead ends: 15765 [2022-07-21 08:06:01,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:06:01,442 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 340 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:01,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 543 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 08:06:01,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15765 states. [2022-07-21 08:06:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15765 to 12312. [2022-07-21 08:06:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12312 states, 10428 states have (on average 1.1813387034906022) internal successors, (12319), 10600 states have internal predecessors, (12319), 933 states have call successors, (933), 701 states have call predecessors, (933), 949 states have return successors, (1648), 1012 states have call predecessors, (1648), 932 states have call successors, (1648) [2022-07-21 08:06:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12312 states to 12312 states and 14900 transitions. [2022-07-21 08:06:02,542 INFO L78 Accepts]: Start accepts. Automaton has 12312 states and 14900 transitions. Word has length 164 [2022-07-21 08:06:02,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:02,543 INFO L495 AbstractCegarLoop]: Abstraction has 12312 states and 14900 transitions. [2022-07-21 08:06:02,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 08:06:02,543 INFO L276 IsEmpty]: Start isEmpty. Operand 12312 states and 14900 transitions. [2022-07-21 08:06:02,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-21 08:06:02,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:02,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:02,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 08:06:02,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:02,749 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:02,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:02,749 INFO L85 PathProgramCache]: Analyzing trace with hash 570679089, now seen corresponding path program 1 times [2022-07-21 08:06:02,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:02,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140658421] [2022-07-21 08:06:02,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:02,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:02,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:06:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:06:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:06:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 08:06:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:06:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:06:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-21 08:06:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,835 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-21 08:06:02,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:02,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140658421] [2022-07-21 08:06:02,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140658421] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:06:02,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736125880] [2022-07-21 08:06:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:02,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:02,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:06:02,840 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:06:02,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 08:06:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:02,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 08:06:02,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:06:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-21 08:06:02,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:06:02,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736125880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:02,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:06:02,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-07-21 08:06:02,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369665395] [2022-07-21 08:06:02,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:02,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:06:02,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:06:02,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:06:02,973 INFO L87 Difference]: Start difference. First operand 12312 states and 14900 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 08:06:04,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:04,192 INFO L93 Difference]: Finished difference Result 22280 states and 27510 transitions. [2022-07-21 08:06:04,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:06:04,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-21 08:06:04,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:04,221 INFO L225 Difference]: With dead ends: 22280 [2022-07-21 08:06:04,222 INFO L226 Difference]: Without dead ends: 12171 [2022-07-21 08:06:04,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:06:04,241 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 49 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:04,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1198 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:06:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12171 states. [2022-07-21 08:06:05,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12171 to 11919. [2022-07-21 08:06:05,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11919 states, 10051 states have (on average 1.1659536364540841) internal successors, (11719), 10212 states have internal predecessors, (11719), 933 states have call successors, (933), 701 states have call predecessors, (933), 933 states have return successors, (1548), 1007 states have call predecessors, (1548), 932 states have call successors, (1548) [2022-07-21 08:06:05,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11919 states to 11919 states and 14200 transitions. [2022-07-21 08:06:05,282 INFO L78 Accepts]: Start accepts. Automaton has 11919 states and 14200 transitions. Word has length 164 [2022-07-21 08:06:05,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:05,282 INFO L495 AbstractCegarLoop]: Abstraction has 11919 states and 14200 transitions. [2022-07-21 08:06:05,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 08:06:05,282 INFO L276 IsEmpty]: Start isEmpty. Operand 11919 states and 14200 transitions. [2022-07-21 08:06:05,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-21 08:06:05,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:05,287 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:05,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-21 08:06:05,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-07-21 08:06:05,488 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:05,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:05,489 INFO L85 PathProgramCache]: Analyzing trace with hash -958773449, now seen corresponding path program 1 times [2022-07-21 08:06:05,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:05,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727461560] [2022-07-21 08:06:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:05,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:06:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:06:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:06:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 08:06:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:06:05,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 08:06:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-21 08:06:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-21 08:06:05,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:05,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727461560] [2022-07-21 08:06:05,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727461560] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:06:05,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513250457] [2022-07-21 08:06:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:05,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:05,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:06:05,567 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:06:05,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 08:06:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:05,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 08:06:05,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:06:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-21 08:06:05,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:06:05,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513250457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:05,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:06:05,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2022-07-21 08:06:05,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68147601] [2022-07-21 08:06:05,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:05,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:06:05,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:05,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:06:05,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:06:05,682 INFO L87 Difference]: Start difference. First operand 11919 states and 14200 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 08:06:06,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:06,547 INFO L93 Difference]: Finished difference Result 18252 states and 22018 transitions. [2022-07-21 08:06:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:06:06,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 164 [2022-07-21 08:06:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:06,564 INFO L225 Difference]: With dead ends: 18252 [2022-07-21 08:06:06,565 INFO L226 Difference]: Without dead ends: 8533 [2022-07-21 08:06:06,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:06:06,579 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 10 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:06,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1183 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:06:06,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8533 states. [2022-07-21 08:06:07,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8533 to 8497. [2022-07-21 08:06:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8497 states, 7202 states have (on average 1.1564843099139128) internal successors, (8329), 7275 states have internal predecessors, (8329), 662 states have call successors, (662), 501 states have call predecessors, (662), 631 states have return successors, (957), 721 states have call predecessors, (957), 661 states have call successors, (957) [2022-07-21 08:06:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8497 states to 8497 states and 9948 transitions. [2022-07-21 08:06:07,335 INFO L78 Accepts]: Start accepts. Automaton has 8497 states and 9948 transitions. Word has length 164 [2022-07-21 08:06:07,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:07,335 INFO L495 AbstractCegarLoop]: Abstraction has 8497 states and 9948 transitions. [2022-07-21 08:06:07,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 08:06:07,336 INFO L276 IsEmpty]: Start isEmpty. Operand 8497 states and 9948 transitions. [2022-07-21 08:06:07,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-21 08:06:07,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:07,341 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:07,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 08:06:07,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-21 08:06:07,541 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:07,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:07,542 INFO L85 PathProgramCache]: Analyzing trace with hash 522298435, now seen corresponding path program 1 times [2022-07-21 08:06:07,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:07,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104906527] [2022-07-21 08:06:07,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:07,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:06:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:06:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:06:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 08:06:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 08:06:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 08:06:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:07,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-21 08:06:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 08:06:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-21 08:06:07,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:07,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104906527] [2022-07-21 08:06:07,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104906527] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:06:07,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049457385] [2022-07-21 08:06:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:07,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:07,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:06:07,629 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:06:07,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 08:06:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:07,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 08:06:07,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:06:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 08:06:07,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:06:07,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049457385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:07,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:06:07,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 08:06:07,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897268330] [2022-07-21 08:06:07,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:07,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:06:07,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:07,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:06:07,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:06:07,764 INFO L87 Difference]: Start difference. First operand 8497 states and 9948 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 08:06:08,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:08,140 INFO L93 Difference]: Finished difference Result 10586 states and 12382 transitions. [2022-07-21 08:06:08,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:06:08,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 199 [2022-07-21 08:06:08,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:08,149 INFO L225 Difference]: With dead ends: 10586 [2022-07-21 08:06:08,149 INFO L226 Difference]: Without dead ends: 4209 [2022-07-21 08:06:08,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:06:08,157 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 126 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:08,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 663 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:06:08,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2022-07-21 08:06:08,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 4209. [2022-07-21 08:06:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 3516 states have (on average 1.1515927189988624) internal successors, (4049), 3544 states have internal predecessors, (4049), 360 states have call successors, (360), 267 states have call predecessors, (360), 331 states have return successors, (464), 398 states have call predecessors, (464), 359 states have call successors, (464) [2022-07-21 08:06:08,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 4873 transitions. [2022-07-21 08:06:08,448 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 4873 transitions. Word has length 199 [2022-07-21 08:06:08,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:08,448 INFO L495 AbstractCegarLoop]: Abstraction has 4209 states and 4873 transitions. [2022-07-21 08:06:08,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-21 08:06:08,448 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 4873 transitions. [2022-07-21 08:06:08,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-21 08:06:08,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:08,451 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:08,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-07-21 08:06:08,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-07-21 08:06:08,652 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash -430993760, now seen corresponding path program 1 times [2022-07-21 08:06:08,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:08,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449430481] [2022-07-21 08:06:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:08,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:06:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:06:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:06:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 08:06:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 08:06:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 08:06:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 08:06:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 08:06:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,746 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 53 proven. 41 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-21 08:06:08,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:08,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449430481] [2022-07-21 08:06:08,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449430481] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:06:08,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380013452] [2022-07-21 08:06:08,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:08,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:08,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:06:08,748 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:06:08,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 08:06:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:08,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:06:08,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:06:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 08:06:08,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:06:08,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380013452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:08,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:06:08,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2022-07-21 08:06:08,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695240084] [2022-07-21 08:06:08,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:08,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:06:08,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:08,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:06:08,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:06:08,940 INFO L87 Difference]: Start difference. First operand 4209 states and 4873 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 08:06:09,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:09,362 INFO L93 Difference]: Finished difference Result 5700 states and 6604 transitions. [2022-07-21 08:06:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:06:09,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 200 [2022-07-21 08:06:09,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:09,369 INFO L225 Difference]: With dead ends: 5700 [2022-07-21 08:06:09,369 INFO L226 Difference]: Without dead ends: 4209 [2022-07-21 08:06:09,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:06:09,371 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 94 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:09,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 616 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:06:09,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2022-07-21 08:06:09,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 4209. [2022-07-21 08:06:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 3516 states have (on average 1.1464732650739478) internal successors, (4031), 3544 states have internal predecessors, (4031), 360 states have call successors, (360), 267 states have call predecessors, (360), 331 states have return successors, (464), 398 states have call predecessors, (464), 359 states have call successors, (464) [2022-07-21 08:06:09,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 4855 transitions. [2022-07-21 08:06:09,662 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 4855 transitions. Word has length 200 [2022-07-21 08:06:09,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:09,662 INFO L495 AbstractCegarLoop]: Abstraction has 4209 states and 4855 transitions. [2022-07-21 08:06:09,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 08:06:09,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 4855 transitions. [2022-07-21 08:06:09,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-21 08:06:09,665 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:09,665 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:09,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-21 08:06:09,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:09,866 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:09,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:09,866 INFO L85 PathProgramCache]: Analyzing trace with hash 288229724, now seen corresponding path program 1 times [2022-07-21 08:06:09,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:09,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312880881] [2022-07-21 08:06:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:09,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 08:06:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 08:06:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:06:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 08:06:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 08:06:09,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 08:06:09,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 08:06:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-21 08:06:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-21 08:06:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:09,996 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-21 08:06:09,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:09,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312880881] [2022-07-21 08:06:09,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312880881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:09,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:06:09,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:06:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113370328] [2022-07-21 08:06:09,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:09,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:06:09,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:09,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:06:09,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:06:09,998 INFO L87 Difference]: Start difference. First operand 4209 states and 4855 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-21 08:06:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:11,034 INFO L93 Difference]: Finished difference Result 4620 states and 5302 transitions. [2022-07-21 08:06:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:06:11,034 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 202 [2022-07-21 08:06:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:11,038 INFO L225 Difference]: With dead ends: 4620 [2022-07-21 08:06:11,038 INFO L226 Difference]: Without dead ends: 2191 [2022-07-21 08:06:11,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:06:11,041 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 889 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:11,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1203 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:06:11,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2022-07-21 08:06:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2191. [2022-07-21 08:06:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2191 states, 1799 states have (on average 1.1667593107281824) internal successors, (2099), 1815 states have internal predecessors, (2099), 188 states have call successors, (188), 147 states have call predecessors, (188), 203 states have return successors, (277), 228 states have call predecessors, (277), 187 states have call successors, (277) [2022-07-21 08:06:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2191 states to 2191 states and 2564 transitions. [2022-07-21 08:06:11,189 INFO L78 Accepts]: Start accepts. Automaton has 2191 states and 2564 transitions. Word has length 202 [2022-07-21 08:06:11,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:11,189 INFO L495 AbstractCegarLoop]: Abstraction has 2191 states and 2564 transitions. [2022-07-21 08:06:11,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-21 08:06:11,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2191 states and 2564 transitions. [2022-07-21 08:06:11,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-21 08:06:11,193 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:11,193 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:11,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-21 08:06:11,193 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:11,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:11,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1879250921, now seen corresponding path program 1 times [2022-07-21 08:06:11,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:11,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570661420] [2022-07-21 08:06:11,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:11,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:06:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:06:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 08:06:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 08:06:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:06:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 08:06:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 08:06:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 08:06:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 08:06:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 08:06:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 08:06:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-21 08:06:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-21 08:06:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-21 08:06:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 75 proven. 16 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-21 08:06:11,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:11,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570661420] [2022-07-21 08:06:11,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570661420] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:06:11,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232826165] [2022-07-21 08:06:11,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:11,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:11,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:06:11,300 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:06:11,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 08:06:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:11,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 08:06:11,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:06:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-21 08:06:11,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:06:11,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232826165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:11,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:06:11,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 08:06:11,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886864936] [2022-07-21 08:06:11,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:11,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:06:11,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:11,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:06:11,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:06:11,484 INFO L87 Difference]: Start difference. First operand 2191 states and 2564 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 08:06:11,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:11,751 INFO L93 Difference]: Finished difference Result 4754 states and 5580 transitions. [2022-07-21 08:06:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:06:11,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 253 [2022-07-21 08:06:11,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:11,756 INFO L225 Difference]: With dead ends: 4754 [2022-07-21 08:06:11,756 INFO L226 Difference]: Without dead ends: 2663 [2022-07-21 08:06:11,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 298 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:06:11,759 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 104 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:11,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 357 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:06:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2022-07-21 08:06:11,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2653. [2022-07-21 08:06:11,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2653 states, 2156 states have (on average 1.1595547309833023) internal successors, (2500), 2187 states have internal predecessors, (2500), 234 states have call successors, (234), 185 states have call predecessors, (234), 262 states have return successors, (339), 280 states have call predecessors, (339), 233 states have call successors, (339) [2022-07-21 08:06:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2653 states to 2653 states and 3073 transitions. [2022-07-21 08:06:11,939 INFO L78 Accepts]: Start accepts. Automaton has 2653 states and 3073 transitions. Word has length 253 [2022-07-21 08:06:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:11,939 INFO L495 AbstractCegarLoop]: Abstraction has 2653 states and 3073 transitions. [2022-07-21 08:06:11,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 08:06:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2653 states and 3073 transitions. [2022-07-21 08:06:11,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-21 08:06:11,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:11,943 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:11,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-21 08:06:12,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:12,143 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:12,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:12,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1448365721, now seen corresponding path program 1 times [2022-07-21 08:06:12,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:12,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349069474] [2022-07-21 08:06:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:12,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:06:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:06:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 08:06:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 08:06:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 08:06:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 08:06:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 08:06:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 08:06:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 08:06:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-21 08:06:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 08:06:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-21 08:06:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-21 08:06:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-21 08:06:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,251 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 75 proven. 16 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-21 08:06:12,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:12,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349069474] [2022-07-21 08:06:12,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349069474] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:06:12,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952649622] [2022-07-21 08:06:12,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:12,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:12,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:06:12,254 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:06:12,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 08:06:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:12,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 08:06:12,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:06:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 256 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 08:06:12,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:06:12,681 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 107 proven. 7 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-21 08:06:12,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952649622] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:06:12,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:06:12,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2022-07-21 08:06:12,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881814495] [2022-07-21 08:06:12,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:06:12,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:06:12,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:12,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:06:12,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:06:12,684 INFO L87 Difference]: Start difference. First operand 2653 states and 3073 transitions. Second operand has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 8 states have internal predecessors, (228), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-07-21 08:06:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:13,356 INFO L93 Difference]: Finished difference Result 3735 states and 4327 transitions. [2022-07-21 08:06:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:06:13,357 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 8 states have internal predecessors, (228), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) Word has length 253 [2022-07-21 08:06:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:13,359 INFO L225 Difference]: With dead ends: 3735 [2022-07-21 08:06:13,359 INFO L226 Difference]: Without dead ends: 1162 [2022-07-21 08:06:13,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 548 SyntacticMatches, 7 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2022-07-21 08:06:13,362 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 429 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:13,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 457 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:06:13,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2022-07-21 08:06:13,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 992. [2022-07-21 08:06:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 992 states, 793 states have (on average 1.1336696090794451) internal successors, (899), 802 states have internal predecessors, (899), 96 states have call successors, (96), 81 states have call predecessors, (96), 102 states have return successors, (138), 108 states have call predecessors, (138), 95 states have call successors, (138) [2022-07-21 08:06:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1133 transitions. [2022-07-21 08:06:13,446 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1133 transitions. Word has length 253 [2022-07-21 08:06:13,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:13,446 INFO L495 AbstractCegarLoop]: Abstraction has 992 states and 1133 transitions. [2022-07-21 08:06:13,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 8 states have internal predecessors, (228), 4 states have call successors, (47), 8 states have call predecessors, (47), 8 states have return successors, (39), 4 states have call predecessors, (39), 4 states have call successors, (39) [2022-07-21 08:06:13,447 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1133 transitions. [2022-07-21 08:06:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-21 08:06:13,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:13,448 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:13,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-21 08:06:13,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-07-21 08:06:13,649 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:13,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1523923701, now seen corresponding path program 1 times [2022-07-21 08:06:13,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:13,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386425442] [2022-07-21 08:06:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:13,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:06:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 08:06:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 08:06:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 08:06:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 08:06:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 08:06:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-21 08:06:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-21 08:06:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-21 08:06:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 08:06:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-21 08:06:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 08:06:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:13,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-21 08:06:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-07-21 08:06:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-21 08:06:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 82 proven. 10 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-07-21 08:06:13,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:13,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386425442] [2022-07-21 08:06:13,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386425442] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:06:13,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955350189] [2022-07-21 08:06:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:13,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:13,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:06:13,747 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:06:13,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-21 08:06:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:13,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 08:06:13,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:06:13,909 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-07-21 08:06:13,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:06:13,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955350189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:13,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:06:13,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2022-07-21 08:06:13,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114512355] [2022-07-21 08:06:13,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:13,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:06:13,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:06:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:06:13,911 INFO L87 Difference]: Start difference. First operand 992 states and 1133 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 08:06:14,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:14,032 INFO L93 Difference]: Finished difference Result 1875 states and 2168 transitions. [2022-07-21 08:06:14,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:06:14,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 258 [2022-07-21 08:06:14,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:14,035 INFO L225 Difference]: With dead ends: 1875 [2022-07-21 08:06:14,035 INFO L226 Difference]: Without dead ends: 983 [2022-07-21 08:06:14,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:06:14,037 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 76 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:14,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 242 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:06:14,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-07-21 08:06:14,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 980. [2022-07-21 08:06:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 782 states have (on average 1.1176470588235294) internal successors, (874), 791 states have internal predecessors, (874), 96 states have call successors, (96), 81 states have call predecessors, (96), 101 states have return successors, (137), 107 states have call predecessors, (137), 95 states have call successors, (137) [2022-07-21 08:06:14,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1107 transitions. [2022-07-21 08:06:14,151 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1107 transitions. Word has length 258 [2022-07-21 08:06:14,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:14,153 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1107 transitions. [2022-07-21 08:06:14,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 08:06:14,153 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1107 transitions. [2022-07-21 08:06:14,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-21 08:06:14,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:06:14,156 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:06:14,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-21 08:06:14,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-07-21 08:06:14,379 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:06:14,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:06:14,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1060373339, now seen corresponding path program 1 times [2022-07-21 08:06:14,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:06:14,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574757598] [2022-07-21 08:06:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:14,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:06:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:06:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:06:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:06:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:06:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:06:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:06:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 08:06:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 08:06:14,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 08:06:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 08:06:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 08:06:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 08:06:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 08:06:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-21 08:06:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 08:06:14,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-21 08:06:14,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-21 08:06:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 08:06:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:06:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:06:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-21 08:06:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-07-21 08:06:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 08:06:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 75 proven. 12 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-21 08:06:14,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:06:14,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574757598] [2022-07-21 08:06:14,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574757598] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:06:14,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111657610] [2022-07-21 08:06:14,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:06:14,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:14,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:06:14,503 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:06:14,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-21 08:06:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:06:14,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 08:06:14,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:06:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-21 08:06:14,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:06:14,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111657610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:06:14,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:06:14,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2022-07-21 08:06:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078080904] [2022-07-21 08:06:14,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:06:14,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:06:14,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:06:14,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:06:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:06:14,703 INFO L87 Difference]: Start difference. First operand 980 states and 1107 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-21 08:06:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:06:14,853 INFO L93 Difference]: Finished difference Result 1268 states and 1421 transitions. [2022-07-21 08:06:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:06:14,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 259 [2022-07-21 08:06:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:06:14,854 INFO L225 Difference]: With dead ends: 1268 [2022-07-21 08:06:14,854 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 08:06:14,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 308 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:06:14,855 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 54 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:06:14,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 290 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 08:06:14,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 08:06:14,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 08:06:14,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:06:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 08:06:14,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 259 [2022-07-21 08:06:14,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:06:14,857 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 08:06:14,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 3 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-21 08:06:14,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 08:06:14,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 08:06:14,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-21 08:06:14,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location error1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-07-21 08:06:14,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-21 08:06:15,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:06:15,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.