./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbdff9d5cdb7ffcae57151b3d045900600728670d8aad942a459f8d05b6221fb --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:48:42,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:48:42,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:48:42,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:48:42,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:48:42,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:48:42,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:48:42,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:48:42,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:48:42,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:48:42,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:48:42,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:48:42,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:48:42,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:48:42,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:48:42,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:48:42,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:48:42,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:48:42,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:48:42,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:48:42,307 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:48:42,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:48:42,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:48:42,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:48:42,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:48:42,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:48:42,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:48:42,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:48:42,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:48:42,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:48:42,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:48:42,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:48:42,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:48:42,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:48:42,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:48:42,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:48:42,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:48:42,322 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:48:42,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:48:42,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:48:42,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:48:42,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:48:42,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:48:42,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:48:42,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:48:42,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:48:42,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:48:42,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:48:42,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:48:42,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:48:42,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:48:42,351 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:48:42,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:48:42,352 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:48:42,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:48:42,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:48:42,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:48:42,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:48:42,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:48:42,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:48:42,353 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:48:42,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:48:42,353 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:48:42,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:48:42,353 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:48:42,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:48:42,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:48:42,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:48:42,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:48:42,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:48:42,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:48:42,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:48:42,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:48:42,355 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:48:42,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:48:42,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:48:42,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdff9d5cdb7ffcae57151b3d045900600728670d8aad942a459f8d05b6221fb [2022-07-22 20:48:42,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:48:42,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:48:42,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:48:42,579 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:48:42,580 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:48:42,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2022-07-22 20:48:42,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8360ce6c/17e6572625a24da2aba9382371a2d0cf/FLAG108e4d2b9 [2022-07-22 20:48:43,020 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:48:43,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2022-07-22 20:48:43,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8360ce6c/17e6572625a24da2aba9382371a2d0cf/FLAG108e4d2b9 [2022-07-22 20:48:43,043 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8360ce6c/17e6572625a24da2aba9382371a2d0cf [2022-07-22 20:48:43,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:48:43,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:48:43,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:48:43,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:48:43,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:48:43,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6874ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43, skipping insertion in model container [2022-07-22 20:48:43,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,057 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:48:43,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:48:43,235 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.10.cil-2.c[914,927] [2022-07-22 20:48:43,291 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.10.cil-2.c[7115,7128] [2022-07-22 20:48:43,379 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:48:43,395 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:48:43,404 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.10.cil-2.c[914,927] [2022-07-22 20:48:43,423 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.10.cil-2.c[7115,7128] [2022-07-22 20:48:43,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:48:43,459 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:48:43,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43 WrapperNode [2022-07-22 20:48:43,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:48:43,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:48:43,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:48:43,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:48:43,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,528 INFO L137 Inliner]: procedures = 73, calls = 87, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 924 [2022-07-22 20:48:43,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:48:43,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:48:43,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:48:43,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:48:43,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,573 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:48:43,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:48:43,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:48:43,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:48:43,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43" (1/1) ... [2022-07-22 20:48:43,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:48:43,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:43,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 20:48:43,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 20:48:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:48:43,706 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:48:43,706 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:48:43,707 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-22 20:48:43,709 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-22 20:48:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:48:43,710 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:48:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:48:43,710 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:48:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-22 20:48:43,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-22 20:48:43,710 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:48:43,711 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:48:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:48:43,711 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:48:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-22 20:48:43,711 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-22 20:48:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-22 20:48:43,711 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-22 20:48:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-22 20:48:43,712 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-22 20:48:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:48:43,712 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:48:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:48:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:48:43,712 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:48:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-22 20:48:43,712 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-22 20:48:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:48:43,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:48:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:48:43,713 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:48:43,805 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:48:43,806 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:48:44,426 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:48:44,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:48:44,436 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-07-22 20:48:44,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:48:44 BoogieIcfgContainer [2022-07-22 20:48:44,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:48:44,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:48:44,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:48:44,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:48:44,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:48:43" (1/3) ... [2022-07-22 20:48:44,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe2b152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:48:44, skipping insertion in model container [2022-07-22 20:48:44,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:43" (2/3) ... [2022-07-22 20:48:44,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe2b152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:48:44, skipping insertion in model container [2022-07-22 20:48:44,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:48:44" (3/3) ... [2022-07-22 20:48:44,446 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2022-07-22 20:48:44,459 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:48:44,459 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:48:44,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:48:44,534 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@72b609d6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2eb5505b [2022-07-22 20:48:44,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:48:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 433 states, 378 states have (on average 1.6322751322751323) internal successors, (617), 384 states have internal predecessors, (617), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-22 20:48:44,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:44,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:44,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:44,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:44,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1844920847, now seen corresponding path program 1 times [2022-07-22 20:48:44,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:44,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188677211] [2022-07-22 20:48:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:44,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:44,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:44,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:44,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:44,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:44,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:44,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188677211] [2022-07-22 20:48:44,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188677211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:44,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:44,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:48:44,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398501788] [2022-07-22 20:48:44,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:44,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:48:44,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:44,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:48:44,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:44,983 INFO L87 Difference]: Start difference. First operand has 433 states, 378 states have (on average 1.6322751322751323) internal successors, (617), 384 states have internal predecessors, (617), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:45,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:45,777 INFO L93 Difference]: Finished difference Result 975 states and 1548 transitions. [2022-07-22 20:48:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:45,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:48:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:45,790 INFO L225 Difference]: With dead ends: 975 [2022-07-22 20:48:45,790 INFO L226 Difference]: Without dead ends: 558 [2022-07-22 20:48:45,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:48:45,797 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1392 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:45,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1397 Valid, 1880 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:48:45,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-07-22 20:48:45,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 519. [2022-07-22 20:48:45,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 446 states have (on average 1.515695067264574) internal successors, (676), 452 states have internal predecessors, (676), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-22 20:48:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 777 transitions. [2022-07-22 20:48:45,859 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 777 transitions. Word has length 65 [2022-07-22 20:48:45,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:45,860 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 777 transitions. [2022-07-22 20:48:45,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 777 transitions. [2022-07-22 20:48:45,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:45,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:45,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:45,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:48:45,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash -166032207, now seen corresponding path program 1 times [2022-07-22 20:48:45,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:45,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970222345] [2022-07-22 20:48:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:45,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:45,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970222345] [2022-07-22 20:48:45,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970222345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:45,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:45,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:48:45,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838747457] [2022-07-22 20:48:45,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:45,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:48:45,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:45,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:48:45,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:45,962 INFO L87 Difference]: Start difference. First operand 519 states and 777 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:46,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:46,826 INFO L93 Difference]: Finished difference Result 866 states and 1254 transitions. [2022-07-22 20:48:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 20:48:46,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:48:46,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:46,830 INFO L225 Difference]: With dead ends: 866 [2022-07-22 20:48:46,830 INFO L226 Difference]: Without dead ends: 689 [2022-07-22 20:48:46,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-22 20:48:46,832 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 1556 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1584 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:46,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1584 Valid, 2091 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:48:46,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-07-22 20:48:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 615. [2022-07-22 20:48:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 522 states have (on average 1.4942528735632183) internal successors, (780), 530 states have internal predecessors, (780), 60 states have call successors, (60), 28 states have call predecessors, (60), 31 states have return successors, (71), 60 states have call predecessors, (71), 58 states have call successors, (71) [2022-07-22 20:48:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 911 transitions. [2022-07-22 20:48:46,892 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 911 transitions. Word has length 65 [2022-07-22 20:48:46,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:46,893 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 911 transitions. [2022-07-22 20:48:46,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:46,893 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 911 transitions. [2022-07-22 20:48:46,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:46,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:46,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:46,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:48:46,895 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:46,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:46,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2100348979, now seen corresponding path program 1 times [2022-07-22 20:48:46,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:46,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263325541] [2022-07-22 20:48:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:46,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:46,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:46,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:46,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:46,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:46,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:46,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:46,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:46,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263325541] [2022-07-22 20:48:46,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263325541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:47,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:47,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:48:47,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178886186] [2022-07-22 20:48:47,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:47,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:48:47,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:47,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:48:47,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:48:47,002 INFO L87 Difference]: Start difference. First operand 615 states and 911 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:47,833 INFO L93 Difference]: Finished difference Result 916 states and 1325 transitions. [2022-07-22 20:48:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:48:47,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-22 20:48:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:47,837 INFO L225 Difference]: With dead ends: 916 [2022-07-22 20:48:47,837 INFO L226 Difference]: Without dead ends: 649 [2022-07-22 20:48:47,837 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 [2022-07-22 20:48:47,838 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 570 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:47,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 2798 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:48:47,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-22 20:48:47,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 620. [2022-07-22 20:48:47,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 526 states have (on average 1.4866920152091254) internal successors, (782), 534 states have internal predecessors, (782), 60 states have call successors, (60), 28 states have call predecessors, (60), 32 states have return successors, (72), 61 states have call predecessors, (72), 58 states have call successors, (72) [2022-07-22 20:48:47,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 914 transitions. [2022-07-22 20:48:47,857 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 914 transitions. Word has length 65 [2022-07-22 20:48:47,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:47,857 INFO L495 AbstractCegarLoop]: Abstraction has 620 states and 914 transitions. [2022-07-22 20:48:47,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:47,857 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 914 transitions. [2022-07-22 20:48:47,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:47,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:47,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:47,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:48:47,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:47,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:47,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1070989681, now seen corresponding path program 1 times [2022-07-22 20:48:47,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:47,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994617925] [2022-07-22 20:48:47,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:47,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:47,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:47,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994617925] [2022-07-22 20:48:47,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994617925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:47,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:47,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:48:47,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045781754] [2022-07-22 20:48:47,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:47,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:48:47,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:47,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:48:47,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:48:47,934 INFO L87 Difference]: Start difference. First operand 620 states and 914 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:48,746 INFO L93 Difference]: Finished difference Result 938 states and 1347 transitions. [2022-07-22 20:48:48,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:48:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-22 20:48:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:48,749 INFO L225 Difference]: With dead ends: 938 [2022-07-22 20:48:48,749 INFO L226 Difference]: Without dead ends: 666 [2022-07-22 20:48:48,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:48:48,751 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 849 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 1454 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2508 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:48,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2508 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1454 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:48:48,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-07-22 20:48:48,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 635. [2022-07-22 20:48:48,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 538 states have (on average 1.4758364312267658) internal successors, (794), 546 states have internal predecessors, (794), 60 states have call successors, (60), 28 states have call predecessors, (60), 35 states have return successors, (75), 64 states have call predecessors, (75), 58 states have call successors, (75) [2022-07-22 20:48:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 929 transitions. [2022-07-22 20:48:48,769 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 929 transitions. Word has length 65 [2022-07-22 20:48:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:48,769 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 929 transitions. [2022-07-22 20:48:48,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 929 transitions. [2022-07-22 20:48:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:48,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:48,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:48,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:48:48,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:48,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:48,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1837774221, now seen corresponding path program 1 times [2022-07-22 20:48:48,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:48,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610791940] [2022-07-22 20:48:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:48,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:48,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:48,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610791940] [2022-07-22 20:48:48,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610791940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:48,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:48,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:48:48,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074709620] [2022-07-22 20:48:48,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:48,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:48:48,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:48,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:48:48,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:48,836 INFO L87 Difference]: Start difference. First operand 635 states and 929 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:49,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:49,608 INFO L93 Difference]: Finished difference Result 1027 states and 1440 transitions. [2022-07-22 20:48:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 20:48:49,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:48:49,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:49,611 INFO L225 Difference]: With dead ends: 1027 [2022-07-22 20:48:49,612 INFO L226 Difference]: Without dead ends: 742 [2022-07-22 20:48:49,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-22 20:48:49,613 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1580 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:49,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 1899 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:48:49,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-07-22 20:48:49,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 647. [2022-07-22 20:48:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 548 states have (on average 1.467153284671533) internal successors, (804), 556 states have internal predecessors, (804), 61 states have call successors, (61), 29 states have call predecessors, (61), 36 states have return successors, (74), 65 states have call predecessors, (74), 59 states have call successors, (74) [2022-07-22 20:48:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 939 transitions. [2022-07-22 20:48:49,633 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 939 transitions. Word has length 65 [2022-07-22 20:48:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:49,633 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 939 transitions. [2022-07-22 20:48:49,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:49,634 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 939 transitions. [2022-07-22 20:48:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:49,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:49,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:49,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:48:49,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:49,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1971787727, now seen corresponding path program 1 times [2022-07-22 20:48:49,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:49,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689185136] [2022-07-22 20:48:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:49,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:49,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:49,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:49,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:49,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:49,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:49,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:49,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:49,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689185136] [2022-07-22 20:48:49,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689185136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:49,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:49,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:49,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710934980] [2022-07-22 20:48:49,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:49,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:49,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:49,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:49,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:49,692 INFO L87 Difference]: Start difference. First operand 647 states and 939 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:50,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:50,086 INFO L93 Difference]: Finished difference Result 1289 states and 1786 transitions. [2022-07-22 20:48:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:48:50,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:48:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:50,090 INFO L225 Difference]: With dead ends: 1289 [2022-07-22 20:48:50,090 INFO L226 Difference]: Without dead ends: 993 [2022-07-22 20:48:50,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:48:50,091 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1557 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:50,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 1527 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:48:50,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-07-22 20:48:50,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 937. [2022-07-22 20:48:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 772 states have (on average 1.4132124352331605) internal successors, (1091), 787 states have internal predecessors, (1091), 96 states have call successors, (96), 51 states have call predecessors, (96), 67 states have return successors, (131), 105 states have call predecessors, (131), 94 states have call successors, (131) [2022-07-22 20:48:50,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1318 transitions. [2022-07-22 20:48:50,115 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1318 transitions. Word has length 65 [2022-07-22 20:48:50,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:50,116 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1318 transitions. [2022-07-22 20:48:50,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:50,116 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1318 transitions. [2022-07-22 20:48:50,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:48:50,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:50,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:50,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:48:50,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:50,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:50,118 INFO L85 PathProgramCache]: Analyzing trace with hash -313198551, now seen corresponding path program 1 times [2022-07-22 20:48:50,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:50,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834212733] [2022-07-22 20:48:50,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:50,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:50,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:50,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834212733] [2022-07-22 20:48:50,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834212733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:50,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:50,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:48:50,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109469776] [2022-07-22 20:48:50,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:50,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:48:50,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:50,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:48:50,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:48:50,174 INFO L87 Difference]: Start difference. First operand 937 states and 1318 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:50,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:50,705 INFO L93 Difference]: Finished difference Result 2140 states and 2889 transitions. [2022-07-22 20:48:50,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:48:50,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:48:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:50,711 INFO L225 Difference]: With dead ends: 2140 [2022-07-22 20:48:50,711 INFO L226 Difference]: Without dead ends: 1533 [2022-07-22 20:48:50,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:48:50,714 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 750 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:50,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1787 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:48:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2022-07-22 20:48:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1418. [2022-07-22 20:48:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1151 states have (on average 1.3657688966116421) internal successors, (1572), 1169 states have internal predecessors, (1572), 141 states have call successors, (141), 95 states have call predecessors, (141), 124 states have return successors, (203), 160 states have call predecessors, (203), 139 states have call successors, (203) [2022-07-22 20:48:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 1916 transitions. [2022-07-22 20:48:50,758 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 1916 transitions. Word has length 66 [2022-07-22 20:48:50,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:50,759 INFO L495 AbstractCegarLoop]: Abstraction has 1418 states and 1916 transitions. [2022-07-22 20:48:50,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 1916 transitions. [2022-07-22 20:48:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:48:50,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:50,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:50,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:48:50,764 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:50,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1145041108, now seen corresponding path program 1 times [2022-07-22 20:48:50,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:50,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021059697] [2022-07-22 20:48:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:50,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:50,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:50,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021059697] [2022-07-22 20:48:50,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021059697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:50,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:50,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:48:50,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466718088] [2022-07-22 20:48:50,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:50,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:48:50,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:50,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:48:50,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:48:50,822 INFO L87 Difference]: Start difference. First operand 1418 states and 1916 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:51,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:51,136 INFO L93 Difference]: Finished difference Result 3606 states and 4722 transitions. [2022-07-22 20:48:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:48:51,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:48:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:51,144 INFO L225 Difference]: With dead ends: 3606 [2022-07-22 20:48:51,144 INFO L226 Difference]: Without dead ends: 2538 [2022-07-22 20:48:51,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-22 20:48:51,147 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1558 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:51,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 1251 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:48:51,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2022-07-22 20:48:51,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2280. [2022-07-22 20:48:51,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 1817 states have (on average 1.3203082003302147) internal successors, (2399), 1845 states have internal predecessors, (2399), 239 states have call successors, (239), 179 states have call predecessors, (239), 222 states have return successors, (339), 262 states have call predecessors, (339), 237 states have call successors, (339) [2022-07-22 20:48:51,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 2977 transitions. [2022-07-22 20:48:51,218 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 2977 transitions. Word has length 66 [2022-07-22 20:48:51,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:51,219 INFO L495 AbstractCegarLoop]: Abstraction has 2280 states and 2977 transitions. [2022-07-22 20:48:51,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:51,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 2977 transitions. [2022-07-22 20:48:51,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 20:48:51,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:51,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:51,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:48:51,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:51,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1831794968, now seen corresponding path program 1 times [2022-07-22 20:48:51,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:51,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629644541] [2022-07-22 20:48:51,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:51,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:51,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:51,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:51,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629644541] [2022-07-22 20:48:51,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629644541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:51,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:51,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:48:51,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016395182] [2022-07-22 20:48:51,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:51,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:48:51,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:48:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:48:51,287 INFO L87 Difference]: Start difference. First operand 2280 states and 2977 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:51,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:51,604 INFO L93 Difference]: Finished difference Result 5190 states and 6627 transitions. [2022-07-22 20:48:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:48:51,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-22 20:48:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:51,616 INFO L225 Difference]: With dead ends: 5190 [2022-07-22 20:48:51,631 INFO L226 Difference]: Without dead ends: 3260 [2022-07-22 20:48:51,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:48:51,635 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 1539 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:51,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 1287 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:48:51,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-07-22 20:48:51,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3012. [2022-07-22 20:48:51,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 2385 states have (on average 1.3010482180293501) internal successors, (3103), 2421 states have internal predecessors, (3103), 319 states have call successors, (319), 249 states have call predecessors, (319), 306 states have return successors, (448), 348 states have call predecessors, (448), 317 states have call successors, (448) [2022-07-22 20:48:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 3870 transitions. [2022-07-22 20:48:51,791 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 3870 transitions. Word has length 72 [2022-07-22 20:48:51,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:51,791 INFO L495 AbstractCegarLoop]: Abstraction has 3012 states and 3870 transitions. [2022-07-22 20:48:51,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:51,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 3870 transitions. [2022-07-22 20:48:51,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 20:48:51,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:51,802 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:51,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:48:51,803 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:51,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:51,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1467852209, now seen corresponding path program 1 times [2022-07-22 20:48:51,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:51,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104392257] [2022-07-22 20:48:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:51,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:51,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:51,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:51,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104392257] [2022-07-22 20:48:51,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104392257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:51,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:51,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:51,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056084178] [2022-07-22 20:48:51,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:51,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:51,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:51,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:51,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:51,882 INFO L87 Difference]: Start difference. First operand 3012 states and 3870 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:52,314 INFO L93 Difference]: Finished difference Result 3786 states and 4801 transitions. [2022-07-22 20:48:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:48:52,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-22 20:48:52,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:52,328 INFO L225 Difference]: With dead ends: 3786 [2022-07-22 20:48:52,328 INFO L226 Difference]: Without dead ends: 3783 [2022-07-22 20:48:52,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:48:52,329 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 1855 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:52,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1865 Valid, 1560 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:48:52,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2022-07-22 20:48:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3506. [2022-07-22 20:48:52,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3506 states, 2770 states have (on average 1.2906137184115523) internal successors, (3575), 2811 states have internal predecessors, (3575), 369 states have call successors, (369), 293 states have call predecessors, (369), 365 states have return successors, (527), 408 states have call predecessors, (527), 368 states have call successors, (527) [2022-07-22 20:48:52,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 4471 transitions. [2022-07-22 20:48:52,427 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 4471 transitions. Word has length 73 [2022-07-22 20:48:52,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:52,427 INFO L495 AbstractCegarLoop]: Abstraction has 3506 states and 4471 transitions. [2022-07-22 20:48:52,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 4471 transitions. [2022-07-22 20:48:52,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 20:48:52,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:52,429 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:52,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 20:48:52,430 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:52,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:52,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1739934738, now seen corresponding path program 1 times [2022-07-22 20:48:52,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:52,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40338194] [2022-07-22 20:48:52,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:52,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:52,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:52,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:52,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:52,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40338194] [2022-07-22 20:48:52,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40338194] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:48:52,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240177101] [2022-07-22 20:48:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:52,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:52,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:52,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:48:52,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:48:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:52,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 20:48:52,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:48:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:52,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:48:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:53,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240177101] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:48:53,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:48:53,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-22 20:48:53,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398560088] [2022-07-22 20:48:53,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:48:53,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:48:53,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:53,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:48:53,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:48:53,002 INFO L87 Difference]: Start difference. First operand 3506 states and 4471 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 20:48:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:54,318 INFO L93 Difference]: Finished difference Result 7947 states and 9957 transitions. [2022-07-22 20:48:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 20:48:54,318 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-22 20:48:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:54,338 INFO L225 Difference]: With dead ends: 7947 [2022-07-22 20:48:54,338 INFO L226 Difference]: Without dead ends: 7944 [2022-07-22 20:48:54,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-22 20:48:54,340 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 2633 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:54,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2703 Valid, 2551 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:48:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7944 states. [2022-07-22 20:48:54,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7944 to 5296. [2022-07-22 20:48:54,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 4174 states have (on average 1.281983708672736) internal successors, (5351), 4237 states have internal predecessors, (5351), 553 states have call successors, (553), 451 states have call predecessors, (553), 567 states have return successors, (805), 614 states have call predecessors, (805), 552 states have call successors, (805) [2022-07-22 20:48:54,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 6709 transitions. [2022-07-22 20:48:54,594 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 6709 transitions. Word has length 74 [2022-07-22 20:48:54,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:54,595 INFO L495 AbstractCegarLoop]: Abstraction has 5296 states and 6709 transitions. [2022-07-22 20:48:54,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 20:48:54,595 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 6709 transitions. [2022-07-22 20:48:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 20:48:54,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:54,597 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:54,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:48:54,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 20:48:54,814 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:54,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:54,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1254124943, now seen corresponding path program 2 times [2022-07-22 20:48:54,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:54,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421341623] [2022-07-22 20:48:54,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:54,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:54,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:54,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421341623] [2022-07-22 20:48:54,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421341623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:54,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:54,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:48:54,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571207985] [2022-07-22 20:48:54,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:54,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:48:54,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:48:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:48:54,874 INFO L87 Difference]: Start difference. First operand 5296 states and 6709 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:55,315 INFO L93 Difference]: Finished difference Result 7978 states and 10082 transitions. [2022-07-22 20:48:55,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 20:48:55,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-22 20:48:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:55,326 INFO L225 Difference]: With dead ends: 7978 [2022-07-22 20:48:55,326 INFO L226 Difference]: Without dead ends: 3903 [2022-07-22 20:48:55,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:48:55,330 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 1146 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:55,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 1688 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:48:55,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2022-07-22 20:48:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 3668. [2022-07-22 20:48:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 2902 states have (on average 1.271881461061337) internal successors, (3691), 2943 states have internal predecessors, (3691), 385 states have call successors, (385), 307 states have call predecessors, (385), 379 states have return successors, (531), 424 states have call predecessors, (531), 384 states have call successors, (531) [2022-07-22 20:48:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 4607 transitions. [2022-07-22 20:48:55,448 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 4607 transitions. Word has length 77 [2022-07-22 20:48:55,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:55,448 INFO L495 AbstractCegarLoop]: Abstraction has 3668 states and 4607 transitions. [2022-07-22 20:48:55,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 4607 transitions. [2022-07-22 20:48:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 20:48:55,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:55,450 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:55,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:48:55,450 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:55,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1075548900, now seen corresponding path program 1 times [2022-07-22 20:48:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:55,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266864467] [2022-07-22 20:48:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:55,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:55,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:55,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:55,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:55,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:55,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:55,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:55,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:48:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:48:55,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:55,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266864467] [2022-07-22 20:48:55,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266864467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:55,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:55,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:48:55,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951336755] [2022-07-22 20:48:55,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:55,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:48:55,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:55,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:48:55,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:55,503 INFO L87 Difference]: Start difference. First operand 3668 states and 4607 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:56,534 INFO L93 Difference]: Finished difference Result 10540 states and 13024 transitions. [2022-07-22 20:48:56,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 20:48:56,534 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-22 20:48:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:56,559 INFO L225 Difference]: With dead ends: 10540 [2022-07-22 20:48:56,559 INFO L226 Difference]: Without dead ends: 5903 [2022-07-22 20:48:56,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-22 20:48:56,568 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 1637 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:56,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 1965 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:48:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2022-07-22 20:48:56,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5583. [2022-07-22 20:48:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5583 states, 4360 states have (on average 1.241743119266055) internal successors, (5414), 4444 states have internal predecessors, (5414), 589 states have call successors, (589), 481 states have call predecessors, (589), 632 states have return successors, (913), 664 states have call predecessors, (913), 588 states have call successors, (913) [2022-07-22 20:48:56,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5583 states to 5583 states and 6916 transitions. [2022-07-22 20:48:56,801 INFO L78 Accepts]: Start accepts. Automaton has 5583 states and 6916 transitions. Word has length 84 [2022-07-22 20:48:56,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:56,802 INFO L495 AbstractCegarLoop]: Abstraction has 5583 states and 6916 transitions. [2022-07-22 20:48:56,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:56,802 INFO L276 IsEmpty]: Start isEmpty. Operand 5583 states and 6916 transitions. [2022-07-22 20:48:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 20:48:56,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:56,804 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:56,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:48:56,805 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:56,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:56,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1873261453, now seen corresponding path program 1 times [2022-07-22 20:48:56,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:56,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701623896] [2022-07-22 20:48:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:56,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:56,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:56,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:56,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:56,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:56,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 20:48:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:56,862 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 20:48:56,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:56,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701623896] [2022-07-22 20:48:56,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701623896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:56,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:56,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:48:56,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909442506] [2022-07-22 20:48:56,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:56,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:48:56,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:56,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:48:56,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:48:56,864 INFO L87 Difference]: Start difference. First operand 5583 states and 6916 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:57,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:57,903 INFO L93 Difference]: Finished difference Result 9586 states and 11756 transitions. [2022-07-22 20:48:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 20:48:57,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-22 20:48:57,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:57,926 INFO L225 Difference]: With dead ends: 9586 [2022-07-22 20:48:57,926 INFO L226 Difference]: Without dead ends: 4993 [2022-07-22 20:48:57,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-22 20:48:57,936 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1830 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:57,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 2297 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:48:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2022-07-22 20:48:58,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4659. [2022-07-22 20:48:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3649 states have (on average 1.2367771992326664) internal successors, (4513), 3715 states have internal predecessors, (4513), 490 states have call successors, (490), 396 states have call predecessors, (490), 518 states have return successors, (691), 554 states have call predecessors, (691), 489 states have call successors, (691) [2022-07-22 20:48:58,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 5694 transitions. [2022-07-22 20:48:58,132 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 5694 transitions. Word has length 93 [2022-07-22 20:48:58,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:58,132 INFO L495 AbstractCegarLoop]: Abstraction has 4659 states and 5694 transitions. [2022-07-22 20:48:58,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:58,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 5694 transitions. [2022-07-22 20:48:58,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:48:58,138 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:58,138 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] [2022-07-22 20:48:58,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 20:48:58,139 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:58,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:58,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1950710036, now seen corresponding path program 1 times [2022-07-22 20:48:58,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:58,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061303463] [2022-07-22 20:48:58,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:58,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:48:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 20:48:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 20:48:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:48:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:48:58,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 20:48:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-22 20:48:58,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:58,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061303463] [2022-07-22 20:48:58,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061303463] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:48:58,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254375725] [2022-07-22 20:48:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:58,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:58,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:58,235 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) [2022-07-22 20:48:58,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 20:48:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 20:48:58,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:48:58,435 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 20:48:58,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:48:58,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254375725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:58,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:48:58,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-22 20:48:58,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800911558] [2022-07-22 20:48:58,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:58,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:48:58,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:58,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:48:58,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 20:48:58,438 INFO L87 Difference]: Start difference. First operand 4659 states and 5694 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) [2022-07-22 20:48:58,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:58,546 INFO L93 Difference]: Finished difference Result 6825 states and 8317 transitions. [2022-07-22 20:48:58,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:48:58,547 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 [2022-07-22 20:48:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:58,553 INFO L225 Difference]: With dead ends: 6825 [2022-07-22 20:48:58,553 INFO L226 Difference]: Without dead ends: 2520 [2022-07-22 20:48:58,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:48:58,560 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 34 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3170 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 [2022-07-22 20:48:58,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3170 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:48:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2022-07-22 20:48:58,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2395. [2022-07-22 20:48:58,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 1962 states have (on average 1.2533129459734964) internal successors, (2459), 1977 states have internal predecessors, (2459), 214 states have call successors, (214), 162 states have call predecessors, (214), 217 states have return successors, (298), 256 states have call predecessors, (298), 213 states have call successors, (298) [2022-07-22 20:48:58,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 2971 transitions. [2022-07-22 20:48:58,677 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 2971 transitions. Word has length 145 [2022-07-22 20:48:58,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:58,678 INFO L495 AbstractCegarLoop]: Abstraction has 2395 states and 2971 transitions. [2022-07-22 20:48:58,678 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) [2022-07-22 20:48:58,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 2971 transitions. [2022-07-22 20:48:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-22 20:48:58,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:58,683 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:58,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:48:58,900 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,SelfDestructingSolverStorable14 [2022-07-22 20:48:58,900 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:58,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:58,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2099513894, now seen corresponding path program 1 times [2022-07-22 20:48:58,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:58,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940226335] [2022-07-22 20:48:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:58,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:48:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 20:48:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 20:48:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 20:48:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 20:48:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 20:48:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 20:48:58,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 20:48:58,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:58,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940226335] [2022-07-22 20:48:58,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940226335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:58,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:58,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:48:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390439557] [2022-07-22 20:48:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:58,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:48:58,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:48:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:48:58,966 INFO L87 Difference]: Start difference. First operand 2395 states and 2971 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 20:48:59,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:59,333 INFO L93 Difference]: Finished difference Result 2460 states and 3039 transitions. [2022-07-22 20:48:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:48:59,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-22 20:48:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:59,338 INFO L225 Difference]: With dead ends: 2460 [2022-07-22 20:48:59,338 INFO L226 Difference]: Without dead ends: 2017 [2022-07-22 20:48:59,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:48:59,339 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 945 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:59,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 1445 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:48:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2022-07-22 20:48:59,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1955. [2022-07-22 20:48:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1618 states have (on average 1.2700865265760197) internal successors, (2055), 1630 states have internal predecessors, (2055), 168 states have call successors, (168), 122 states have call predecessors, (168), 167 states have return successors, (234), 203 states have call predecessors, (234), 167 states have call successors, (234) [2022-07-22 20:48:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 2457 transitions. [2022-07-22 20:48:59,404 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 2457 transitions. Word has length 147 [2022-07-22 20:48:59,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:59,405 INFO L495 AbstractCegarLoop]: Abstraction has 1955 states and 2457 transitions. [2022-07-22 20:48:59,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 20:48:59,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 2457 transitions. [2022-07-22 20:48:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-22 20:48:59,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:59,407 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] [2022-07-22 20:48:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:48:59,408 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash 38806, now seen corresponding path program 1 times [2022-07-22 20:48:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:59,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687904998] [2022-07-22 20:48:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:48:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:48:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 20:48:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 20:48:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 20:48:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 20:48:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:59,469 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 20:48:59,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:59,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687904998] [2022-07-22 20:48:59,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687904998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:59,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:59,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:59,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742877044] [2022-07-22 20:48:59,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:59,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:59,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:59,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:59,470 INFO L87 Difference]: Start difference. First operand 1955 states and 2457 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) [2022-07-22 20:49:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:00,033 INFO L93 Difference]: Finished difference Result 3432 states and 4256 transitions. [2022-07-22 20:49:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 20:49:00,033 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 [2022-07-22 20:49:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:00,037 INFO L225 Difference]: With dead ends: 3432 [2022-07-22 20:49:00,038 INFO L226 Difference]: Without dead ends: 2056 [2022-07-22 20:49:00,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:49:00,040 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 599 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:00,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 2202 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:49:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2022-07-22 20:49:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1864. [2022-07-22 20:49:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1549 states have (on average 1.2717882504841833) internal successors, (1970), 1562 states have internal predecessors, (1970), 159 states have call successors, (159), 117 states have call predecessors, (159), 154 states have return successors, (218), 185 states have call predecessors, (218), 158 states have call successors, (218) [2022-07-22 20:49:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2347 transitions. [2022-07-22 20:49:00,101 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2347 transitions. Word has length 159 [2022-07-22 20:49:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:00,101 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 2347 transitions. [2022-07-22 20:49:00,101 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) [2022-07-22 20:49:00,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2347 transitions. [2022-07-22 20:49:00,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 20:49:00,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:00,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:00,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:49:00,104 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:00,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:00,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2014192118, now seen corresponding path program 1 times [2022-07-22 20:49:00,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:00,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155264556] [2022-07-22 20:49:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:00,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:49:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:49:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:49:00,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 20:49:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 20:49:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 20:49:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 20:49:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:49:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:49:00,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 20:49:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-22 20:49:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 20:49:00,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:00,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155264556] [2022-07-22 20:49:00,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155264556] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:49:00,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099000004] [2022-07-22 20:49:00,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:00,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:49:00,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:49:00,223 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) [2022-07-22 20:49:00,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 20:49:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 20:49:00,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:49:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-22 20:49:00,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:49:00,684 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-22 20:49:00,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099000004] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:49:00,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:49:00,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-22 20:49:00,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470038153] [2022-07-22 20:49:00,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:49:00,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 20:49:00,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:00,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 20:49:00,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:49:00,687 INFO L87 Difference]: Start difference. First operand 1864 states and 2347 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-22 20:49:01,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:01,950 INFO L93 Difference]: Finished difference Result 3836 states and 4800 transitions. [2022-07-22 20:49:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 20:49:01,950 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-22 20:49:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:01,955 INFO L225 Difference]: With dead ends: 3836 [2022-07-22 20:49:01,955 INFO L226 Difference]: Without dead ends: 2404 [2022-07-22 20:49:01,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-22 20:49:01,957 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 2301 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:01,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2332 Valid, 2871 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:49:01,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2022-07-22 20:49:02,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2254. [2022-07-22 20:49:02,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1827 states have (on average 1.2441160372194855) internal successors, (2273), 1848 states have internal predecessors, (2273), 213 states have call successors, (213), 167 states have call predecessors, (213), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2022-07-22 20:49:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2818 transitions. [2022-07-22 20:49:02,029 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2818 transitions. Word has length 162 [2022-07-22 20:49:02,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:02,029 INFO L495 AbstractCegarLoop]: Abstraction has 2254 states and 2818 transitions. [2022-07-22 20:49:02,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-22 20:49:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2818 transitions. [2022-07-22 20:49:02,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:02,032 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:02,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:02,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 20:49:02,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 20:49:02,248 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:02,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:02,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1411211214, now seen corresponding path program 1 times [2022-07-22 20:49:02,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:02,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948998079] [2022-07-22 20:49:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:02,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:02,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:02,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:02,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:02,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:02,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:02,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948998079] [2022-07-22 20:49:02,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948998079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:02,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:02,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:49:02,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110166885] [2022-07-22 20:49:02,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:02,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:49:02,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:02,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:49:02,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:49:02,348 INFO L87 Difference]: Start difference. First operand 2254 states and 2818 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:03,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:03,388 INFO L93 Difference]: Finished difference Result 2691 states and 3522 transitions. [2022-07-22 20:49:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:49:03,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:03,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:03,394 INFO L225 Difference]: With dead ends: 2691 [2022-07-22 20:49:03,394 INFO L226 Difference]: Without dead ends: 2374 [2022-07-22 20:49:03,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:49:03,398 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 978 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:03,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 1194 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:49:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-07-22 20:49:03,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2254. [2022-07-22 20:49:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1827 states have (on average 1.2435686918445539) internal successors, (2272), 1848 states have internal predecessors, (2272), 213 states have call successors, (213), 167 states have call predecessors, (213), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2022-07-22 20:49:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2817 transitions. [2022-07-22 20:49:03,526 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2817 transitions. Word has length 156 [2022-07-22 20:49:03,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:03,527 INFO L495 AbstractCegarLoop]: Abstraction has 2254 states and 2817 transitions. [2022-07-22 20:49:03,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2817 transitions. [2022-07-22 20:49:03,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:03,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:03,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:03,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:49:03,530 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:03,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1749498764, now seen corresponding path program 1 times [2022-07-22 20:49:03,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:03,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634507502] [2022-07-22 20:49:03,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:03,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:03,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:03,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:03,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:03,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:03,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:03,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:03,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:03,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634507502] [2022-07-22 20:49:03,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634507502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:03,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:03,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:49:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224212362] [2022-07-22 20:49:03,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:03,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:49:03,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:49:03,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:49:03,610 INFO L87 Difference]: Start difference. First operand 2254 states and 2817 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:05,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:05,305 INFO L93 Difference]: Finished difference Result 3126 states and 4224 transitions. [2022-07-22 20:49:05,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:49:05,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:05,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:05,319 INFO L225 Difference]: With dead ends: 3126 [2022-07-22 20:49:05,319 INFO L226 Difference]: Without dead ends: 2817 [2022-07-22 20:49:05,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:49:05,321 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 1538 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:05,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1565 Valid, 1698 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 20:49:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-07-22 20:49:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2578. [2022-07-22 20:49:05,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2578 states, 2125 states have (on average 1.2922352941176471) internal successors, (2746), 2147 states have internal predecessors, (2746), 232 states have call successors, (232), 173 states have call predecessors, (232), 219 states have return successors, (354), 258 states have call predecessors, (354), 231 states have call successors, (354) [2022-07-22 20:49:05,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 3332 transitions. [2022-07-22 20:49:05,515 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 3332 transitions. Word has length 156 [2022-07-22 20:49:05,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:05,515 INFO L495 AbstractCegarLoop]: Abstraction has 2578 states and 3332 transitions. [2022-07-22 20:49:05,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:05,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 3332 transitions. [2022-07-22 20:49:05,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:05,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:05,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:05,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:49:05,521 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:05,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:05,521 INFO L85 PathProgramCache]: Analyzing trace with hash 73101560, now seen corresponding path program 1 times [2022-07-22 20:49:05,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:05,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451451729] [2022-07-22 20:49:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:05,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:05,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:05,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:05,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:05,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:05,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:05,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:05,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451451729] [2022-07-22 20:49:05,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451451729] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:05,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:05,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:05,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406250768] [2022-07-22 20:49:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:05,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:05,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:05,603 INFO L87 Difference]: Start difference. First operand 2578 states and 3332 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:07,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:07,622 INFO L93 Difference]: Finished difference Result 3909 states and 5480 transitions. [2022-07-22 20:49:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:49:07,624 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:07,630 INFO L225 Difference]: With dead ends: 3909 [2022-07-22 20:49:07,630 INFO L226 Difference]: Without dead ends: 3276 [2022-07-22 20:49:07,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:49:07,633 INFO L413 NwaCegarLoop]: 979 mSDtfsCounter, 1560 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:07,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 2803 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2857 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 20:49:07,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2022-07-22 20:49:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2879. [2022-07-22 20:49:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2400 states have (on average 1.3225) internal successors, (3174), 2423 states have internal predecessors, (3174), 251 states have call successors, (251), 179 states have call predecessors, (251), 226 states have return successors, (375), 278 states have call predecessors, (375), 250 states have call successors, (375) [2022-07-22 20:49:07,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3800 transitions. [2022-07-22 20:49:07,912 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3800 transitions. Word has length 156 [2022-07-22 20:49:07,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:07,912 INFO L495 AbstractCegarLoop]: Abstraction has 2879 states and 3800 transitions. [2022-07-22 20:49:07,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:07,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3800 transitions. [2022-07-22 20:49:07,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:07,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:07,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:07,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:49:07,919 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:07,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1544338890, now seen corresponding path program 1 times [2022-07-22 20:49:07,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:07,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793768802] [2022-07-22 20:49:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:07,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:07,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:07,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:08,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:08,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:08,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793768802] [2022-07-22 20:49:08,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793768802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:08,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:08,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:08,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646420566] [2022-07-22 20:49:08,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:08,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:08,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:08,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:08,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:08,047 INFO L87 Difference]: Start difference. First operand 2879 states and 3800 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:09,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:09,934 INFO L93 Difference]: Finished difference Result 5063 states and 7316 transitions. [2022-07-22 20:49:09,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:49:09,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:09,944 INFO L225 Difference]: With dead ends: 5063 [2022-07-22 20:49:09,944 INFO L226 Difference]: Without dead ends: 4129 [2022-07-22 20:49:09,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:49:09,947 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 1653 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:09,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1680 Valid, 2038 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 20:49:09,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2022-07-22 20:49:10,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 3482. [2022-07-22 20:49:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 2951 states have (on average 1.3659776347001016) internal successors, (4031), 2976 states have internal predecessors, (4031), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2022-07-22 20:49:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 4741 transitions. [2022-07-22 20:49:10,114 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 4741 transitions. Word has length 156 [2022-07-22 20:49:10,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:10,114 INFO L495 AbstractCegarLoop]: Abstraction has 3482 states and 4741 transitions. [2022-07-22 20:49:10,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 4741 transitions. [2022-07-22 20:49:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:10,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:10,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:10,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 20:49:10,120 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:10,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:10,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1180872392, now seen corresponding path program 1 times [2022-07-22 20:49:10,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:10,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163587041] [2022-07-22 20:49:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:10,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:10,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:10,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163587041] [2022-07-22 20:49:10,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163587041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:10,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:10,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:10,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824005362] [2022-07-22 20:49:10,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:10,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:10,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:10,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:10,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:10,204 INFO L87 Difference]: Start difference. First operand 3482 states and 4741 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:12,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:12,540 INFO L93 Difference]: Finished difference Result 7282 states and 10825 transitions. [2022-07-22 20:49:12,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:49:12,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:12,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:12,553 INFO L225 Difference]: With dead ends: 7282 [2022-07-22 20:49:12,554 INFO L226 Difference]: Without dead ends: 5745 [2022-07-22 20:49:12,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:49:12,559 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 1552 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:12,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 2793 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 20:49:12,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5745 states. [2022-07-22 20:49:12,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5745 to 4689. [2022-07-22 20:49:12,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4054 states have (on average 1.4171188949185989) internal successors, (5745), 4083 states have internal predecessors, (5745), 365 states have call successors, (365), 215 states have call predecessors, (365), 268 states have return successors, (519), 398 states have call predecessors, (519), 364 states have call successors, (519) [2022-07-22 20:49:12,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6629 transitions. [2022-07-22 20:49:12,848 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6629 transitions. Word has length 156 [2022-07-22 20:49:12,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:12,848 INFO L495 AbstractCegarLoop]: Abstraction has 4689 states and 6629 transitions. [2022-07-22 20:49:12,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:12,849 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6629 transitions. [2022-07-22 20:49:12,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:12,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:12,853 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:12,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 20:49:12,853 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:12,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:12,853 INFO L85 PathProgramCache]: Analyzing trace with hash -892053002, now seen corresponding path program 1 times [2022-07-22 20:49:12,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:12,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938451841] [2022-07-22 20:49:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:12,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:12,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:12,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:12,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:12,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:12,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:12,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:12,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938451841] [2022-07-22 20:49:12,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938451841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:12,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:12,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:12,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823335311] [2022-07-22 20:49:12,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:12,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:12,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:12,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:12,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:12,943 INFO L87 Difference]: Start difference. First operand 4689 states and 6629 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:15,222 INFO L93 Difference]: Finished difference Result 11719 states and 17859 transitions. [2022-07-22 20:49:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:49:15,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:15,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:15,243 INFO L225 Difference]: With dead ends: 11719 [2022-07-22 20:49:15,244 INFO L226 Difference]: Without dead ends: 8975 [2022-07-22 20:49:15,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:49:15,253 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 1548 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:15,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 2789 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2854 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 20:49:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8975 states. [2022-07-22 20:49:15,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8975 to 7108. [2022-07-22 20:49:15,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 6265 states have (on average 1.46512370311253) internal successors, (9179), 6302 states have internal predecessors, (9179), 517 states have call successors, (517), 263 states have call predecessors, (517), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-07-22 20:49:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 10429 transitions. [2022-07-22 20:49:15,686 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 10429 transitions. Word has length 156 [2022-07-22 20:49:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:15,686 INFO L495 AbstractCegarLoop]: Abstraction has 7108 states and 10429 transitions. [2022-07-22 20:49:15,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 10429 transitions. [2022-07-22 20:49:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:15,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:15,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:15,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 20:49:15,693 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:15,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:15,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1436925576, now seen corresponding path program 1 times [2022-07-22 20:49:15,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:15,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777655639] [2022-07-22 20:49:15,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:15,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:15,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:15,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:15,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:15,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:15,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:15,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:15,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777655639] [2022-07-22 20:49:15,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777655639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:15,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:15,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:15,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467553914] [2022-07-22 20:49:15,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:15,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:15,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:15,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:15,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:15,777 INFO L87 Difference]: Start difference. First operand 7108 states and 10429 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:17,430 INFO L93 Difference]: Finished difference Result 14228 states and 21906 transitions. [2022-07-22 20:49:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:49:17,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:17,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:17,451 INFO L225 Difference]: With dead ends: 14228 [2022-07-22 20:49:17,452 INFO L226 Difference]: Without dead ends: 9065 [2022-07-22 20:49:17,465 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 [2022-07-22 20:49:17,465 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 1174 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:17,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1202 Valid, 1668 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:49:17,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9065 states. [2022-07-22 20:49:17,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 7108. [2022-07-22 20:49:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 6265 states have (on average 1.4624102154828411) internal successors, (9162), 6302 states have internal predecessors, (9162), 517 states have call successors, (517), 263 states have call predecessors, (517), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-07-22 20:49:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 10412 transitions. [2022-07-22 20:49:17,838 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 10412 transitions. Word has length 156 [2022-07-22 20:49:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:17,839 INFO L495 AbstractCegarLoop]: Abstraction has 7108 states and 10412 transitions. [2022-07-22 20:49:17,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 10412 transitions. [2022-07-22 20:49:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:17,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:17,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:17,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 20:49:17,844 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash -761765450, now seen corresponding path program 1 times [2022-07-22 20:49:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:17,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932040153] [2022-07-22 20:49:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:17,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:17,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:17,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:17,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:17,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932040153] [2022-07-22 20:49:17,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932040153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:17,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:17,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:17,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227735770] [2022-07-22 20:49:17,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:17,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:17,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:17,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:17,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:17,934 INFO L87 Difference]: Start difference. First operand 7108 states and 10412 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:19,434 INFO L93 Difference]: Finished difference Result 14193 states and 21786 transitions. [2022-07-22 20:49:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:49:19,434 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:19,457 INFO L225 Difference]: With dead ends: 14193 [2022-07-22 20:49:19,457 INFO L226 Difference]: Without dead ends: 9030 [2022-07-22 20:49:19,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:49:19,471 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1364 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:19,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1392 Valid, 1442 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:49:19,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9030 states. [2022-07-22 20:49:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9030 to 7108. [2022-07-22 20:49:19,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 6265 states have (on average 1.4596967278531525) internal successors, (9145), 6302 states have internal predecessors, (9145), 517 states have call successors, (517), 263 states have call predecessors, (517), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-07-22 20:49:19,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 10395 transitions. [2022-07-22 20:49:19,914 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 10395 transitions. Word has length 156 [2022-07-22 20:49:19,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:19,914 INFO L495 AbstractCegarLoop]: Abstraction has 7108 states and 10395 transitions. [2022-07-22 20:49:19,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:19,915 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 10395 transitions. [2022-07-22 20:49:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:19,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:19,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:19,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 20:49:19,919 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:19,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1346537100, now seen corresponding path program 1 times [2022-07-22 20:49:19,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:19,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515491506] [2022-07-22 20:49:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:19,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:19,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:20,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:20,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:20,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:20,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:20,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515491506] [2022-07-22 20:49:20,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515491506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:20,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:20,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:20,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943925319] [2022-07-22 20:49:20,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:20,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:20,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:20,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:20,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:20,031 INFO L87 Difference]: Start difference. First operand 7108 states and 10395 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:22,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:22,949 INFO L93 Difference]: Finished difference Result 20539 states and 31715 transitions. [2022-07-22 20:49:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:49:22,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:22,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:22,985 INFO L225 Difference]: With dead ends: 20539 [2022-07-22 20:49:22,985 INFO L226 Difference]: Without dead ends: 15376 [2022-07-22 20:49:22,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:49:22,997 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1531 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:22,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 2767 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2794 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 20:49:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15376 states. [2022-07-22 20:49:23,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15376 to 12009. [2022-07-22 20:49:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12009 states, 10750 states have (on average 1.4946976744186047) internal successors, (16068), 10803 states have internal predecessors, (16068), 821 states have call successors, (821), 359 states have call predecessors, (821), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2022-07-22 20:49:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12009 states to 12009 states and 18104 transitions. [2022-07-22 20:49:23,731 INFO L78 Accepts]: Start accepts. Automaton has 12009 states and 18104 transitions. Word has length 156 [2022-07-22 20:49:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:23,732 INFO L495 AbstractCegarLoop]: Abstraction has 12009 states and 18104 transitions. [2022-07-22 20:49:23,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:23,732 INFO L276 IsEmpty]: Start isEmpty. Operand 12009 states and 18104 transitions. [2022-07-22 20:49:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:23,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:23,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:23,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 20:49:23,738 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:23,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:23,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1781042698, now seen corresponding path program 1 times [2022-07-22 20:49:23,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:23,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64832358] [2022-07-22 20:49:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:23,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:23,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:23,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:23,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:23,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:23,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:23,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64832358] [2022-07-22 20:49:23,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64832358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:23,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:23,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:23,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258767085] [2022-07-22 20:49:23,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:23,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:23,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:23,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:23,838 INFO L87 Difference]: Start difference. First operand 12009 states and 18104 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:25,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:25,661 INFO L93 Difference]: Finished difference Result 25607 states and 39963 transitions. [2022-07-22 20:49:25,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:49:25,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:25,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:25,697 INFO L225 Difference]: With dead ends: 25607 [2022-07-22 20:49:25,697 INFO L226 Difference]: Without dead ends: 15543 [2022-07-22 20:49:25,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:49:25,714 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 1363 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:25,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 1435 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:49:25,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15543 states. [2022-07-22 20:49:26,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15543 to 12009. [2022-07-22 20:49:26,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12009 states, 10750 states have (on average 1.4916279069767442) internal successors, (16035), 10803 states have internal predecessors, (16035), 821 states have call successors, (821), 359 states have call predecessors, (821), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2022-07-22 20:49:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12009 states to 12009 states and 18071 transitions. [2022-07-22 20:49:26,492 INFO L78 Accepts]: Start accepts. Automaton has 12009 states and 18071 transitions. Word has length 156 [2022-07-22 20:49:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:26,492 INFO L495 AbstractCegarLoop]: Abstraction has 12009 states and 18071 transitions. [2022-07-22 20:49:26,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 12009 states and 18071 transitions. [2022-07-22 20:49:26,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:26,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:26,499 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:26,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 20:49:26,499 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:26,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash 2084266292, now seen corresponding path program 1 times [2022-07-22 20:49:26,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:26,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757511483] [2022-07-22 20:49:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:26,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:26,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:26,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:26,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:26,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757511483] [2022-07-22 20:49:26,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757511483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:26,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:26,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:26,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392256150] [2022-07-22 20:49:26,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:26,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:26,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:26,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:26,605 INFO L87 Difference]: Start difference. First operand 12009 states and 18071 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:30,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:30,723 INFO L93 Difference]: Finished difference Result 38254 states and 59744 transitions. [2022-07-22 20:49:30,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:49:30,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:30,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:30,803 INFO L225 Difference]: With dead ends: 38254 [2022-07-22 20:49:30,803 INFO L226 Difference]: Without dead ends: 28190 [2022-07-22 20:49:30,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:49:30,830 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 1611 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:30,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 2010 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 20:49:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28190 states. [2022-07-22 20:49:32,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28190 to 21869. [2022-07-22 20:49:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21869 states, 19778 states have (on average 1.5126403074122763) internal successors, (29917), 19863 states have internal predecessors, (29917), 1429 states have call successors, (1429), 551 states have call predecessors, (1429), 660 states have return successors, (2341), 1518 states have call predecessors, (2341), 1428 states have call successors, (2341) [2022-07-22 20:49:32,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21869 states to 21869 states and 33687 transitions. [2022-07-22 20:49:32,406 INFO L78 Accepts]: Start accepts. Automaton has 21869 states and 33687 transitions. Word has length 156 [2022-07-22 20:49:32,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:32,406 INFO L495 AbstractCegarLoop]: Abstraction has 21869 states and 33687 transitions. [2022-07-22 20:49:32,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:32,407 INFO L276 IsEmpty]: Start isEmpty. Operand 21869 states and 33687 transitions. [2022-07-22 20:49:32,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:32,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:32,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:32,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 20:49:32,416 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:32,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:32,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1377669686, now seen corresponding path program 1 times [2022-07-22 20:49:32,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:32,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535718440] [2022-07-22 20:49:32,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:32,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:32,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:32,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:32,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:32,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:32,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:32,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535718440] [2022-07-22 20:49:32,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535718440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:32,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:32,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:32,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535254984] [2022-07-22 20:49:32,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:32,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:32,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:32,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:32,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:32,504 INFO L87 Difference]: Start difference. First operand 21869 states and 33687 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:41,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:41,029 INFO L93 Difference]: Finished difference Result 83284 states and 131260 transitions. [2022-07-22 20:49:41,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:49:41,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:41,231 INFO L225 Difference]: With dead ends: 83284 [2022-07-22 20:49:41,231 INFO L226 Difference]: Without dead ends: 63360 [2022-07-22 20:49:41,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:49:41,286 INFO L413 NwaCegarLoop]: 1093 mSDtfsCounter, 1625 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 3352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:41,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 2909 Invalid, 3352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 20:49:41,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63360 states. [2022-07-22 20:49:44,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63360 to 41458. [2022-07-22 20:49:44,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41458 states, 37767 states have (on average 1.5262795562263352) internal successors, (57643), 37916 states have internal predecessors, (57643), 2581 states have call successors, (2581), 935 states have call predecessors, (2581), 1108 states have return successors, (5015), 2734 states have call predecessors, (5015), 2580 states have call successors, (5015) [2022-07-22 20:49:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41458 states to 41458 states and 65239 transitions. [2022-07-22 20:49:44,736 INFO L78 Accepts]: Start accepts. Automaton has 41458 states and 65239 transitions. Word has length 156 [2022-07-22 20:49:44,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:44,737 INFO L495 AbstractCegarLoop]: Abstraction has 41458 states and 65239 transitions. [2022-07-22 20:49:44,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:44,737 INFO L276 IsEmpty]: Start isEmpty. Operand 41458 states and 65239 transitions. [2022-07-22 20:49:44,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:49:44,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:44,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:44,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 20:49:44,752 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:44,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:44,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1970259724, now seen corresponding path program 1 times [2022-07-22 20:49:44,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:44,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479228060] [2022-07-22 20:49:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:44,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:44,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:49:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:44,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:49:44,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:44,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:49:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:44,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:49:44,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:44,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:44,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479228060] [2022-07-22 20:49:44,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479228060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:44,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:44,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:44,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974087205] [2022-07-22 20:49:44,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:44,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:44,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:44,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:44,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:44,860 INFO L87 Difference]: Start difference. First operand 41458 states and 65239 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:59,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:59,964 INFO L93 Difference]: Finished difference Result 161695 states and 258342 transitions. [2022-07-22 20:49:59,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:49:59,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:49:59,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:00,380 INFO L225 Difference]: With dead ends: 161695 [2022-07-22 20:50:00,380 INFO L226 Difference]: Without dead ends: 122182 [2022-07-22 20:50:00,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:50:00,497 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 1889 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 2732 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:00,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 2732 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 20:50:00,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122182 states. [2022-07-22 20:50:07,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122182 to 79931. [2022-07-22 20:50:07,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79931 states, 73104 states have (on average 1.5338832348435105) internal successors, (112133), 73381 states have internal predecessors, (112133), 4821 states have call successors, (4821), 1703 states have call predecessors, (4821), 2004 states have return successors, (11757), 5102 states have call predecessors, (11757), 4820 states have call successors, (11757) [2022-07-22 20:50:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79931 states to 79931 states and 128711 transitions. [2022-07-22 20:50:07,944 INFO L78 Accepts]: Start accepts. Automaton has 79931 states and 128711 transitions. Word has length 156 [2022-07-22 20:50:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:50:07,944 INFO L495 AbstractCegarLoop]: Abstraction has 79931 states and 128711 transitions. [2022-07-22 20:50:07,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:07,945 INFO L276 IsEmpty]: Start isEmpty. Operand 79931 states and 128711 transitions. [2022-07-22 20:50:07,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 20:50:07,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:50:07,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:50:07,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 20:50:07,976 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:50:07,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:50:07,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1108426122, now seen corresponding path program 1 times [2022-07-22 20:50:07,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:50:07,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083145896] [2022-07-22 20:50:07,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:50:07,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:50:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:07,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:50:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 20:50:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 20:50:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 20:50:08,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-22 20:50:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:50:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:50:08,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:50:08,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083145896] [2022-07-22 20:50:08,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083145896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:50:08,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:50:08,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:50:08,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168091073] [2022-07-22 20:50:08,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:50:08,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:50:08,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:50:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:50:08,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:50:08,088 INFO L87 Difference]: Start difference. First operand 79931 states and 128711 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:50:37,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:50:37,639 INFO L93 Difference]: Finished difference Result 314230 states and 511364 transitions. [2022-07-22 20:50:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:50:37,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-22 20:50:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:50:38,781 INFO L225 Difference]: With dead ends: 314230 [2022-07-22 20:50:38,781 INFO L226 Difference]: Without dead ends: 236244 [2022-07-22 20:50:39,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:50:39,071 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 1606 mSDsluCounter, 1816 mSDsCounter, 0 mSdLazyCounter, 3157 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1632 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 3274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:50:39,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1632 Valid, 2869 Invalid, 3274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 3157 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 20:50:39,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236244 states.