./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.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 dc8dc9bdb034e5a733c81076f9e42c36caa1eb5cb68a77287d3420bd964c5f5a --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:08:22,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:08:22,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:08:22,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:08:22,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:08:22,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:08:22,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:08:22,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:08:22,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:08:22,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:08:22,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:08:22,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:08:22,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:08:22,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:08:22,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:08:22,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:08:22,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:08:22,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:08:22,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:08:22,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:08:22,457 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:08:22,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:08:22,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:08:22,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:08:22,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:08:22,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:08:22,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:08:22,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:08:22,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:08:22,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:08:22,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:08:22,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:08:22,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:08:22,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:08:22,476 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:08:22,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:08:22,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:08:22,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:08:22,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:08:22,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:08:22,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:08:22,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:08:22,483 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:08:22,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:08:22,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:08:22,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:08:22,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:08:22,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:08:22,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:08:22,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:08:22,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:08:22,521 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:08:22,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:08:22,522 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:08:22,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:08:22,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:08:22,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:08:22,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:08:22,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:08:22,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:08:22,523 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:08:22,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:08:22,523 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:08:22,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:08:22,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:08:22,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:08:22,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:08:22,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:08:22,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:08:22,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:08:22,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:08:22,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:08:22,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:08:22,526 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:08:22,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:08:22,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:08:22,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc8dc9bdb034e5a733c81076f9e42c36caa1eb5cb68a77287d3420bd964c5f5a [2022-07-21 08:08:22,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:08:22,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:08:22,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:08:22,860 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:08:22,863 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:08:22,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c [2022-07-21 08:08:22,924 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00901cc0/24ddb8b4a4aa49f096fb01dc79711ea2/FLAG5454ea507 [2022-07-21 08:08:23,465 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:08:23,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c [2022-07-21 08:08:23,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00901cc0/24ddb8b4a4aa49f096fb01dc79711ea2/FLAG5454ea507 [2022-07-21 08:08:23,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e00901cc0/24ddb8b4a4aa49f096fb01dc79711ea2 [2022-07-21 08:08:23,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:08:23,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:08:23,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:08:23,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:08:23,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:08:23,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:08:23" (1/1) ... [2022-07-21 08:08:23,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254e3849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:23, skipping insertion in model container [2022-07-21 08:08:23,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:08:23" (1/1) ... [2022-07-21 08:08:23,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:08:23,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:08:23,993 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[914,927] [2022-07-21 08:08:24,068 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.15.cil.c[7115,7128] [2022-07-21 08:08:24,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:08:24,249 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:08:24,260 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.15.cil.c[914,927] [2022-07-21 08:08:24,285 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.15.cil.c[7115,7128] [2022-07-21 08:08:24,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:08:24,391 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:08:24,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24 WrapperNode [2022-07-21 08:08:24,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:08:24,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:08:24,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:08:24,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:08:24,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24" (1/1) ... [2022-07-21 08:08:24,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24" (1/1) ... [2022-07-21 08:08:24,466 INFO L137 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1101 [2022-07-21 08:08:24,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:08:24,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:08:24,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:08:24,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:08:24,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24" (1/1) ... [2022-07-21 08:08:24,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24" (1/1) ... [2022-07-21 08:08:24,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24" (1/1) ... [2022-07-21 08:08:24,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24" (1/1) ... [2022-07-21 08:08:24,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24" (1/1) ... [2022-07-21 08:08:24,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24" (1/1) ... [2022-07-21 08:08:24,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24" (1/1) ... [2022-07-21 08:08:24,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:08:24,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:08:24,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:08:24,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:08:24,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24" (1/1) ... [2022-07-21 08:08:24,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:08:24,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:08:24,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:08:24,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:08:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:08:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 08:08:24,609 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 08:08:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-21 08:08:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-21 08:08:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-21 08:08:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-21 08:08:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-21 08:08:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-21 08:08:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-21 08:08:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-21 08:08:24,612 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-21 08:08:24,612 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-21 08:08:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-21 08:08:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-21 08:08:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-21 08:08:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-21 08:08:24,613 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-21 08:08:24,613 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-21 08:08:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-21 08:08:24,614 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-21 08:08:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-21 08:08:24,614 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-21 08:08:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:08:24,614 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-21 08:08:24,615 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-21 08:08:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-21 08:08:24,615 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-21 08:08:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:08:24,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:08:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-21 08:08:24,616 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-21 08:08:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-21 08:08:24,616 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-21 08:08:24,782 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:08:24,784 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:08:25,651 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:08:25,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:08:25,667 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-21 08:08:25,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:08:25 BoogieIcfgContainer [2022-07-21 08:08:25,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:08:25,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:08:25,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:08:25,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:08:25,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:08:23" (1/3) ... [2022-07-21 08:08:25,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e7e416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:08:25, skipping insertion in model container [2022-07-21 08:08:25,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:08:24" (2/3) ... [2022-07-21 08:08:25,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e7e416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:08:25, skipping insertion in model container [2022-07-21 08:08:25,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:08:25" (3/3) ... [2022-07-21 08:08:25,680 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.15.cil.c [2022-07-21 08:08:25,692 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:08:25,692 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:08:25,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:08:25,771 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@aa262b9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@47d52ef9 [2022-07-21 08:08:25,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:08:25,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 514 states, 453 states have (on average 1.6467991169977925) internal successors, (746), 461 states have internal predecessors, (746), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-21 08:08:25,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:08:25,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:25,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:25,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:25,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash -338141029, now seen corresponding path program 1 times [2022-07-21 08:08:25,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:25,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372451368] [2022-07-21 08:08:25,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:25,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:26,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:26,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:26,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:26,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:26,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:26,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:26,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:26,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:26,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:26,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372451368] [2022-07-21 08:08:26,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372451368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:26,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:26,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:08:26,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131950297] [2022-07-21 08:08:26,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:26,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:08:26,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:26,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:08:26,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:08:26,231 INFO L87 Difference]: Start difference. First operand has 514 states, 453 states have (on average 1.6467991169977925) internal successors, (746), 461 states have internal predecessors, (746), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:08:27,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:27,454 INFO L93 Difference]: Finished difference Result 1133 states and 1820 transitions. [2022-07-21 08:08:27,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:08:27,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:08:27,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:27,477 INFO L225 Difference]: With dead ends: 1133 [2022-07-21 08:08:27,477 INFO L226 Difference]: Without dead ends: 638 [2022-07-21 08:08:27,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:27,492 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1267 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:27,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 2307 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:08:27,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-07-21 08:08:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 599. [2022-07-21 08:08:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 521 states have (on average 1.5335892514395393) internal successors, (799), 528 states have internal predecessors, (799), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-07-21 08:08:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 908 transitions. [2022-07-21 08:08:27,592 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 908 transitions. Word has length 65 [2022-07-21 08:08:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:27,592 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 908 transitions. [2022-07-21 08:08:27,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:08:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 908 transitions. [2022-07-21 08:08:27,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:08:27,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:27,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:27,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:08:27,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash -74903688, now seen corresponding path program 1 times [2022-07-21 08:08:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:27,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221623938] [2022-07-21 08:08:27,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:27,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:27,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:27,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:27,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:27,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:27,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:27,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:27,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221623938] [2022-07-21 08:08:27,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221623938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:27,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:27,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:08:27,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357257048] [2022-07-21 08:08:27,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:27,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:08:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:27,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:08:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:08:27,755 INFO L87 Difference]: Start difference. First operand 599 states and 908 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:08:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:28,989 INFO L93 Difference]: Finished difference Result 813 states and 1202 transitions. [2022-07-21 08:08:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:08:28,990 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-21 08:08:28,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:28,993 INFO L225 Difference]: With dead ends: 813 [2022-07-21 08:08:28,994 INFO L226 Difference]: Without dead ends: 636 [2022-07-21 08:08:28,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:08:28,996 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 1031 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:28,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 3032 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:08:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-07-21 08:08:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 604. [2022-07-21 08:08:29,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 525 states have (on average 1.5276190476190477) internal successors, (802), 532 states have internal predecessors, (802), 54 states have call successors, (54), 22 states have call predecessors, (54), 23 states have return successors, (56), 52 states have call predecessors, (56), 50 states have call successors, (56) [2022-07-21 08:08:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 912 transitions. [2022-07-21 08:08:29,036 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 912 transitions. Word has length 65 [2022-07-21 08:08:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:29,037 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 912 transitions. [2022-07-21 08:08:29,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:08:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 912 transitions. [2022-07-21 08:08:29,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:08:29,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:29,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:29,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:08:29,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:29,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:29,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1104262986, now seen corresponding path program 1 times [2022-07-21 08:08:29,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:29,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750216225] [2022-07-21 08:08:29,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:29,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:29,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:29,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:29,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:29,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:29,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750216225] [2022-07-21 08:08:29,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750216225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:29,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:29,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:08:29,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350109326] [2022-07-21 08:08:29,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:29,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:08:29,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:29,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:08:29,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:08:29,172 INFO L87 Difference]: Start difference. First operand 604 states and 912 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 08:08:31,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:31,035 INFO L93 Difference]: Finished difference Result 1504 states and 2131 transitions. [2022-07-21 08:08:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:08:31,036 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-21 08:08:31,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:31,042 INFO L225 Difference]: With dead ends: 1504 [2022-07-21 08:08:31,042 INFO L226 Difference]: Without dead ends: 1310 [2022-07-21 08:08:31,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:08:31,044 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 3811 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:31,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3827 Valid, 3163 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:08:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-07-21 08:08:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1185. [2022-07-21 08:08:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 987 states have (on average 1.4346504559270516) internal successors, (1416), 1002 states have internal predecessors, (1416), 111 states have call successors, (111), 75 states have call predecessors, (111), 85 states have return successors, (125), 109 states have call predecessors, (125), 107 states have call successors, (125) [2022-07-21 08:08:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1652 transitions. [2022-07-21 08:08:31,097 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1652 transitions. Word has length 65 [2022-07-21 08:08:31,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:31,097 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1652 transitions. [2022-07-21 08:08:31,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-21 08:08:31,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1652 transitions. [2022-07-21 08:08:31,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:08:31,098 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:31,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:31,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:08:31,099 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:31,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:31,100 INFO L85 PathProgramCache]: Analyzing trace with hash -52813897, now seen corresponding path program 1 times [2022-07-21 08:08:31,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:31,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997016540] [2022-07-21 08:08:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:31,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:31,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:31,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997016540] [2022-07-21 08:08:31,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997016540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:31,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:31,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:08:31,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683005757] [2022-07-21 08:08:31,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:31,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:08:31,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:31,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:08:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:08:31,225 INFO L87 Difference]: Start difference. First operand 1185 states and 1652 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:08:32,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:32,386 INFO L93 Difference]: Finished difference Result 2066 states and 2795 transitions. [2022-07-21 08:08:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:08:32,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-21 08:08:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:32,393 INFO L225 Difference]: With dead ends: 2066 [2022-07-21 08:08:32,393 INFO L226 Difference]: Without dead ends: 1297 [2022-07-21 08:08:32,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:08:32,405 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 1032 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:32,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 3029 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:08:32,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-07-21 08:08:32,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1205. [2022-07-21 08:08:32,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1003 states have (on average 1.4227318045862414) internal successors, (1427), 1018 states have internal predecessors, (1427), 111 states have call successors, (111), 75 states have call predecessors, (111), 89 states have return successors, (129), 113 states have call predecessors, (129), 107 states have call successors, (129) [2022-07-21 08:08:32,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1667 transitions. [2022-07-21 08:08:32,466 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1667 transitions. Word has length 65 [2022-07-21 08:08:32,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:32,467 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1667 transitions. [2022-07-21 08:08:32,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:08:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1667 transitions. [2022-07-21 08:08:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:08:32,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:32,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:32,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:08:32,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1333389497, now seen corresponding path program 1 times [2022-07-21 08:08:32,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:32,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108010355] [2022-07-21 08:08:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:32,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:32,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:32,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:32,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:32,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:32,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:32,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:32,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108010355] [2022-07-21 08:08:32,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108010355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:32,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:32,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:08:32,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663879956] [2022-07-21 08:08:32,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:32,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:08:32,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:32,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:08:32,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:08:32,586 INFO L87 Difference]: Start difference. First operand 1205 states and 1667 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:08:33,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:33,729 INFO L93 Difference]: Finished difference Result 2773 states and 3614 transitions. [2022-07-21 08:08:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:08:33,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:08:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:33,743 INFO L225 Difference]: With dead ends: 2773 [2022-07-21 08:08:33,744 INFO L226 Difference]: Without dead ends: 1985 [2022-07-21 08:08:33,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:08:33,750 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 1527 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:33,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 2611 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 08:08:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-07-21 08:08:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1653. [2022-07-21 08:08:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1356 states have (on average 1.3834808259587021) internal successors, (1876), 1380 states have internal predecessors, (1876), 157 states have call successors, (157), 114 states have call predecessors, (157), 138 states have return successors, (201), 161 states have call predecessors, (201), 153 states have call successors, (201) [2022-07-21 08:08:33,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2234 transitions. [2022-07-21 08:08:33,818 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2234 transitions. Word has length 65 [2022-07-21 08:08:33,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:33,818 INFO L495 AbstractCegarLoop]: Abstraction has 1653 states and 2234 transitions. [2022-07-21 08:08:33,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:08:33,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2234 transitions. [2022-07-21 08:08:33,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-21 08:08:33,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:33,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:33,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:08:33,820 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:33,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:33,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1199375991, now seen corresponding path program 1 times [2022-07-21 08:08:33,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:33,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085980975] [2022-07-21 08:08:33,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:33,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:33,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:33,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:33,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:33,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:33,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:33,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:33,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085980975] [2022-07-21 08:08:33,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085980975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:33,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:33,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:33,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881168657] [2022-07-21 08:08:33,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:33,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:33,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:33,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:33,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:33,922 INFO L87 Difference]: Start difference. First operand 1653 states and 2234 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:08:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:34,382 INFO L93 Difference]: Finished difference Result 4131 states and 5388 transitions. [2022-07-21 08:08:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:08:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-21 08:08:34,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:34,397 INFO L225 Difference]: With dead ends: 4131 [2022-07-21 08:08:34,398 INFO L226 Difference]: Without dead ends: 2897 [2022-07-21 08:08:34,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:08:34,403 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 2246 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:34,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2280 Valid, 1493 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:08:34,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2022-07-21 08:08:34,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2789. [2022-07-21 08:08:34,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2227 states have (on average 1.3161203412662774) internal successors, (2931), 2273 states have internal predecessors, (2931), 286 states have call successors, (286), 220 states have call predecessors, (286), 274 states have return successors, (415), 300 states have call predecessors, (415), 282 states have call successors, (415) [2022-07-21 08:08:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3632 transitions. [2022-07-21 08:08:34,578 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3632 transitions. Word has length 65 [2022-07-21 08:08:34,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:34,578 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 3632 transitions. [2022-07-21 08:08:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-21 08:08:34,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3632 transitions. [2022-07-21 08:08:34,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-21 08:08:34,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:34,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:34,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:08:34,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:34,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:34,581 INFO L85 PathProgramCache]: Analyzing trace with hash -791607456, now seen corresponding path program 1 times [2022-07-21 08:08:34,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:34,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865507555] [2022-07-21 08:08:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:34,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:34,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:34,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:34,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:34,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865507555] [2022-07-21 08:08:34,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865507555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:34,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:34,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:08:34,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731657323] [2022-07-21 08:08:34,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:34,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:08:34,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:08:34,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:08:34,658 INFO L87 Difference]: Start difference. First operand 2789 states and 3632 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:08:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:35,398 INFO L93 Difference]: Finished difference Result 6241 states and 7964 transitions. [2022-07-21 08:08:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:08:35,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-21 08:08:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:35,417 INFO L225 Difference]: With dead ends: 6241 [2022-07-21 08:08:35,417 INFO L226 Difference]: Without dead ends: 3878 [2022-07-21 08:08:35,423 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 [2022-07-21 08:08:35,424 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 868 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:35,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 2182 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:08:35,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-07-21 08:08:35,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3622. [2022-07-21 08:08:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 2872 states have (on average 1.2959610027855153) internal successors, (3722), 2925 states have internal predecessors, (3722), 378 states have call successors, (378), 300 states have call predecessors, (378), 370 states have return successors, (533), 401 states have call predecessors, (533), 374 states have call successors, (533) [2022-07-21 08:08:35,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 4633 transitions. [2022-07-21 08:08:35,590 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 4633 transitions. Word has length 66 [2022-07-21 08:08:35,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:35,591 INFO L495 AbstractCegarLoop]: Abstraction has 3622 states and 4633 transitions. [2022-07-21 08:08:35,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:08:35,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 4633 transitions. [2022-07-21 08:08:35,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 08:08:35,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:35,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:35,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:08:35,598 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:35,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:35,598 INFO L85 PathProgramCache]: Analyzing trace with hash -993648705, now seen corresponding path program 1 times [2022-07-21 08:08:35,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:35,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744996420] [2022-07-21 08:08:35,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:35,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:35,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:35,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:35,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:35,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:35,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:35,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:35,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:35,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744996420] [2022-07-21 08:08:35,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744996420] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:35,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:35,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:08:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955439924] [2022-07-21 08:08:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:35,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:08:35,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:35,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:08:35,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:08:35,683 INFO L87 Difference]: Start difference. First operand 3622 states and 4633 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:08:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:36,197 INFO L93 Difference]: Finished difference Result 7633 states and 9607 transitions. [2022-07-21 08:08:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:08:36,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-21 08:08:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:36,222 INFO L225 Difference]: With dead ends: 7633 [2022-07-21 08:08:36,223 INFO L226 Difference]: Without dead ends: 4433 [2022-07-21 08:08:36,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:36,230 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1463 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:36,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1907 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:08:36,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2022-07-21 08:08:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4185. [2022-07-21 08:08:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4185 states, 3319 states have (on average 1.2862307924073517) internal successors, (4269), 3378 states have internal predecessors, (4269), 434 states have call successors, (434), 350 states have call predecessors, (434), 430 states have return successors, (610), 461 states have call predecessors, (610), 430 states have call successors, (610) [2022-07-21 08:08:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 5313 transitions. [2022-07-21 08:08:36,434 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 5313 transitions. Word has length 72 [2022-07-21 08:08:36,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:36,435 INFO L495 AbstractCegarLoop]: Abstraction has 4185 states and 5313 transitions. [2022-07-21 08:08:36,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 08:08:36,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 5313 transitions. [2022-07-21 08:08:36,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 08:08:36,437 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:36,437 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:36,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:08:36,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:36,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:36,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1255358187, now seen corresponding path program 1 times [2022-07-21 08:08:36,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:36,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931502980] [2022-07-21 08:08:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:36,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:36,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:36,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:36,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:36,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:36,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:36,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:36,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931502980] [2022-07-21 08:08:36,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931502980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:36,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:36,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:36,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081939388] [2022-07-21 08:08:36,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:36,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:36,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:36,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:36,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:36,527 INFO L87 Difference]: Start difference. First operand 4185 states and 5313 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:08:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:37,103 INFO L93 Difference]: Finished difference Result 5254 states and 6597 transitions. [2022-07-21 08:08:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:08:37,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-21 08:08:37,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:37,126 INFO L225 Difference]: With dead ends: 5254 [2022-07-21 08:08:37,126 INFO L226 Difference]: Without dead ends: 5251 [2022-07-21 08:08:37,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-21 08:08:37,131 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 2570 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:37,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2580 Valid, 1525 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:08:37,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2022-07-21 08:08:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 4942. [2022-07-21 08:08:37,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 3897 states have (on average 1.2740569668976136) internal successors, (4965), 3963 states have internal predecessors, (4965), 517 states have call successors, (517), 422 states have call predecessors, (517), 526 states have return successors, (738), 561 states have call predecessors, (738), 514 states have call successors, (738) [2022-07-21 08:08:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 6220 transitions. [2022-07-21 08:08:37,365 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 6220 transitions. Word has length 73 [2022-07-21 08:08:37,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:37,365 INFO L495 AbstractCegarLoop]: Abstraction has 4942 states and 6220 transitions. [2022-07-21 08:08:37,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:08:37,366 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 6220 transitions. [2022-07-21 08:08:37,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 08:08:37,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:37,368 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:37,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:08:37,369 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:37,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:37,369 INFO L85 PathProgramCache]: Analyzing trace with hash -262921527, now seen corresponding path program 1 times [2022-07-21 08:08:37,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:37,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040872923] [2022-07-21 08:08:37,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:37,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:37,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:37,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:37,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:37,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:37,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:37,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:37,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040872923] [2022-07-21 08:08:37,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040872923] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:08:37,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356718667] [2022-07-21 08:08:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:37,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:08:37,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:08:37,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:08:37,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 08:08:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:37,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 08:08:37,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:08:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:37,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 08:08:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:38,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356718667] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 08:08:38,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 08:08:38,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-21 08:08:38,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171890640] [2022-07-21 08:08:38,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 08:08:38,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:08:38,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:38,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:08:38,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:08:38,116 INFO L87 Difference]: Start difference. First operand 4942 states and 6220 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 08:08:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:40,110 INFO L93 Difference]: Finished difference Result 9456 states and 11705 transitions. [2022-07-21 08:08:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-21 08:08:40,110 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-21 08:08:40,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:40,144 INFO L225 Difference]: With dead ends: 9456 [2022-07-21 08:08:40,144 INFO L226 Difference]: Without dead ends: 9453 [2022-07-21 08:08:40,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-21 08:08:40,149 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 1975 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:40,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 3435 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 08:08:40,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9453 states. [2022-07-21 08:08:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9453 to 8567. [2022-07-21 08:08:40,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8567 states, 6732 states have (on average 1.2565359477124183) internal successors, (8459), 6849 states have internal predecessors, (8459), 895 states have call successors, (895), 754 states have call predecessors, (895), 938 states have return successors, (1295), 968 states have call predecessors, (1295), 892 states have call successors, (1295) [2022-07-21 08:08:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8567 states to 8567 states and 10649 transitions. [2022-07-21 08:08:40,581 INFO L78 Accepts]: Start accepts. Automaton has 8567 states and 10649 transitions. Word has length 74 [2022-07-21 08:08:40,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:40,582 INFO L495 AbstractCegarLoop]: Abstraction has 8567 states and 10649 transitions. [2022-07-21 08:08:40,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 08:08:40,582 INFO L276 IsEmpty]: Start isEmpty. Operand 8567 states and 10649 transitions. [2022-07-21 08:08:40,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 08:08:40,585 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:40,585 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:40,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 08:08:40,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 08:08:40,812 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:40,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash -385890155, now seen corresponding path program 2 times [2022-07-21 08:08:40,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:40,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901078641] [2022-07-21 08:08:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:40,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:40,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:40,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:40,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:40,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:40,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:40,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:40,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:40,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:40,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:40,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901078641] [2022-07-21 08:08:40,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901078641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:40,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:40,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:08:40,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820930766] [2022-07-21 08:08:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:40,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:08:40,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:40,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:08:40,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:08:40,883 INFO L87 Difference]: Start difference. First operand 8567 states and 10649 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:08:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:41,469 INFO L93 Difference]: Finished difference Result 11597 states and 14396 transitions. [2022-07-21 08:08:41,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:08:41,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-21 08:08:41,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:41,485 INFO L225 Difference]: With dead ends: 11597 [2022-07-21 08:08:41,486 INFO L226 Difference]: Without dead ends: 4799 [2022-07-21 08:08:41,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:08:41,498 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 1396 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:41,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 1968 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 08:08:41,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-07-21 08:08:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 3730. [2022-07-21 08:08:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 2963 states have (on average 1.2666216672291597) internal successors, (3753), 3002 states have internal predecessors, (3753), 394 states have call successors, (394), 318 states have call predecessors, (394), 371 states have return successors, (519), 414 states have call predecessors, (519), 391 states have call successors, (519) [2022-07-21 08:08:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4666 transitions. [2022-07-21 08:08:41,672 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4666 transitions. Word has length 77 [2022-07-21 08:08:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:41,672 INFO L495 AbstractCegarLoop]: Abstraction has 3730 states and 4666 transitions. [2022-07-21 08:08:41,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 08:08:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4666 transitions. [2022-07-21 08:08:41,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 08:08:41,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:41,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:41,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:08:41,675 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:41,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:41,676 INFO L85 PathProgramCache]: Analyzing trace with hash -870186629, now seen corresponding path program 1 times [2022-07-21 08:08:41,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:41,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226308302] [2022-07-21 08:08:41,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:41,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:41,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:41,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:41,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:41,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:41,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:41,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:41,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:41,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:08:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-21 08:08:41,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:41,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226308302] [2022-07-21 08:08:41,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226308302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:41,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:41,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:08:41,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510537277] [2022-07-21 08:08:41,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:41,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:08:41,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:08:41,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:08:41,755 INFO L87 Difference]: Start difference. First operand 3730 states and 4666 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:08:43,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:43,014 INFO L93 Difference]: Finished difference Result 10338 states and 12689 transitions. [2022-07-21 08:08:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:08:43,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-21 08:08:43,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:43,036 INFO L225 Difference]: With dead ends: 10338 [2022-07-21 08:08:43,037 INFO L226 Difference]: Without dead ends: 5962 [2022-07-21 08:08:43,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:08:43,045 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 1957 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:43,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 2332 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 08:08:43,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2022-07-21 08:08:43,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 5698. [2022-07-21 08:08:43,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 4458 states have (on average 1.2292507851054284) internal successors, (5480), 4540 states have internal predecessors, (5480), 610 states have call successors, (610), 504 states have call predecessors, (610), 628 states have return successors, (903), 658 states have call predecessors, (903), 607 states have call successors, (903) [2022-07-21 08:08:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 6993 transitions. [2022-07-21 08:08:43,283 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 6993 transitions. Word has length 84 [2022-07-21 08:08:43,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:43,283 INFO L495 AbstractCegarLoop]: Abstraction has 5698 states and 6993 transitions. [2022-07-21 08:08:43,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:08:43,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 6993 transitions. [2022-07-21 08:08:43,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-21 08:08:43,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:43,286 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:43,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:08:43,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:43,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:43,287 INFO L85 PathProgramCache]: Analyzing trace with hash -780260845, now seen corresponding path program 1 times [2022-07-21 08:08:43,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:43,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088427183] [2022-07-21 08:08:43,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:43,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:43,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 08:08:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 08:08:43,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:43,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088427183] [2022-07-21 08:08:43,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088427183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:43,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:43,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:08:43,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156041132] [2022-07-21 08:08:43,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:43,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:08:43,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:43,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:08:43,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:08:43,405 INFO L87 Difference]: Start difference. First operand 5698 states and 6993 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:08:44,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:44,802 INFO L93 Difference]: Finished difference Result 9345 states and 11351 transitions. [2022-07-21 08:08:44,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:08:44,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-21 08:08:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:44,822 INFO L225 Difference]: With dead ends: 9345 [2022-07-21 08:08:44,823 INFO L226 Difference]: Without dead ends: 4796 [2022-07-21 08:08:44,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:08:44,837 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 2031 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:44,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 3102 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 08:08:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4796 states. [2022-07-21 08:08:45,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4796 to 4365. [2022-07-21 08:08:45,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 3411 states have (on average 1.2189973614775726) internal successors, (4158), 3476 states have internal predecessors, (4158), 467 states have call successors, (467), 379 states have call predecessors, (467), 485 states have return successors, (645), 514 states have call predecessors, (645), 464 states have call successors, (645) [2022-07-21 08:08:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 5270 transitions. [2022-07-21 08:08:45,070 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 5270 transitions. Word has length 93 [2022-07-21 08:08:45,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:45,070 INFO L495 AbstractCegarLoop]: Abstraction has 4365 states and 5270 transitions. [2022-07-21 08:08:45,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 08:08:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 5270 transitions. [2022-07-21 08:08:45,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-21 08:08:45,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:45,076 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:45,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:08:45,076 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:45,077 INFO L85 PathProgramCache]: Analyzing trace with hash 464257645, now seen corresponding path program 1 times [2022-07-21 08:08:45,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:45,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736187275] [2022-07-21 08:08:45,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:45,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:08:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 08:08:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 08:08:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 08:08:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 08:08:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 08:08:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 08:08:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,188 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 08:08:45,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:45,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736187275] [2022-07-21 08:08:45,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736187275] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:08:45,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198546579] [2022-07-21 08:08:45,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:45,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:08:45,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:08:45,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:08:45,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 08:08:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 08:08:45,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:08:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-21 08:08:45,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:08:45,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198546579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:45,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:08:45,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-21 08:08:45,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694525355] [2022-07-21 08:08:45,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:45,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:08:45,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:45,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:08:45,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:08:45,393 INFO L87 Difference]: Start difference. First operand 4365 states and 5270 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 08:08:45,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:45,512 INFO L93 Difference]: Finished difference Result 6585 states and 7909 transitions. [2022-07-21 08:08:45,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:45,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-21 08:08:45,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:45,519 INFO L225 Difference]: With dead ends: 6585 [2022-07-21 08:08:45,519 INFO L226 Difference]: Without dead ends: 2646 [2022-07-21 08:08:45,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:08:45,526 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 34 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3825 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:45,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3825 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 08:08:45,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-07-21 08:08:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2490. [2022-07-21 08:08:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2036 states have (on average 1.2426326129666012) internal successors, (2530), 2055 states have internal predecessors, (2530), 229 states have call successors, (229), 173 states have call predecessors, (229), 223 states have return successors, (309), 262 states have call predecessors, (309), 226 states have call successors, (309) [2022-07-21 08:08:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3068 transitions. [2022-07-21 08:08:45,642 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3068 transitions. Word has length 145 [2022-07-21 08:08:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:45,642 INFO L495 AbstractCegarLoop]: Abstraction has 2490 states and 3068 transitions. [2022-07-21 08:08:45,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 08:08:45,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3068 transitions. [2022-07-21 08:08:45,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-21 08:08:45,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:45,646 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] [2022-07-21 08:08:45,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 08:08:45,859 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,SelfDestructingSolverStorable13 [2022-07-21 08:08:45,860 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:45,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash -21978279, now seen corresponding path program 1 times [2022-07-21 08:08:45,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:45,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449072953] [2022-07-21 08:08:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:45,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:45,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 08:08:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 08:08:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 08:08:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 08:08:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-21 08:08:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 08:08:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-21 08:08:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-21 08:08:45,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:45,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449072953] [2022-07-21 08:08:45,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449072953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:45,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:45,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:08:45,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686763477] [2022-07-21 08:08:45,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:45,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:08:45,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:45,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:08:45,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:08:45,941 INFO L87 Difference]: Start difference. First operand 2490 states and 3068 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) [2022-07-21 08:08:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:46,531 INFO L93 Difference]: Finished difference Result 2544 states and 3124 transitions. [2022-07-21 08:08:46,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:46,532 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 [2022-07-21 08:08:46,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:46,537 INFO L225 Difference]: With dead ends: 2544 [2022-07-21 08:08:46,537 INFO L226 Difference]: Without dead ends: 2026 [2022-07-21 08:08:46,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:08:46,539 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 1128 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:46,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1766 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 08:08:46,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2022-07-21 08:08:46,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1975. [2022-07-21 08:08:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1639 states have (on average 1.2684563758389262) internal successors, (2079), 1654 states have internal predecessors, (2079), 172 states have call successors, (172), 124 states have call predecessors, (172), 162 states have return successors, (231), 197 states have call predecessors, (231), 169 states have call successors, (231) [2022-07-21 08:08:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2482 transitions. [2022-07-21 08:08:46,628 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2482 transitions. Word has length 147 [2022-07-21 08:08:46,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:46,628 INFO L495 AbstractCegarLoop]: Abstraction has 1975 states and 2482 transitions. [2022-07-21 08:08:46,628 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) [2022-07-21 08:08:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2482 transitions. [2022-07-21 08:08:46,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-21 08:08:46,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:46,632 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:46,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:08:46,632 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:46,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:46,632 INFO L85 PathProgramCache]: Analyzing trace with hash 848578871, now seen corresponding path program 1 times [2022-07-21 08:08:46,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:46,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504570898] [2022-07-21 08:08:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:46,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:08:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:08:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 08:08:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 08:08:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 08:08:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 08:08:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 08:08:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-21 08:08:46,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:46,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504570898] [2022-07-21 08:08:46,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504570898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:46,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:46,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:46,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439404053] [2022-07-21 08:08:46,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:46,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:46,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:46,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:46,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:46,736 INFO L87 Difference]: Start difference. First operand 1975 states and 2482 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 08:08:47,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:47,437 INFO L93 Difference]: Finished difference Result 3258 states and 4002 transitions. [2022-07-21 08:08:47,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:08:47,438 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-21 08:08:47,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:47,442 INFO L225 Difference]: With dead ends: 3258 [2022-07-21 08:08:47,442 INFO L226 Difference]: Without dead ends: 1868 [2022-07-21 08:08:47,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:47,445 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 721 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:47,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 2636 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 08:08:47,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2022-07-21 08:08:47,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1722. [2022-07-21 08:08:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1437 states have (on average 1.2867084203201113) internal successors, (1849), 1452 states have internal predecessors, (1849), 147 states have call successors, (147), 103 states have call predecessors, (147), 136 states have return successors, (193), 167 states have call predecessors, (193), 144 states have call successors, (193) [2022-07-21 08:08:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2189 transitions. [2022-07-21 08:08:47,527 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2189 transitions. Word has length 159 [2022-07-21 08:08:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:47,528 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2189 transitions. [2022-07-21 08:08:47,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 08:08:47,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2189 transitions. [2022-07-21 08:08:47,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 08:08:47,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:47,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:47,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:08:47,535 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:47,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:47,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1407928022, now seen corresponding path program 1 times [2022-07-21 08:08:47,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:47,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74326860] [2022-07-21 08:08:47,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:47,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 08:08:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 08:08:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 08:08:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 08:08:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 08:08:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-21 08:08:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-21 08:08:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 08:08:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 08:08:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 08:08:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 08:08:47,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 08:08:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 08:08:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,694 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-21 08:08:47,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:47,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74326860] [2022-07-21 08:08:47,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74326860] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 08:08:47,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242977378] [2022-07-21 08:08:47,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:47,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:08:47,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:08:47,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 08:08:47,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 08:08:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:47,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 08:08:47,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 08:08:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 08:08:47,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 08:08:47,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242977378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:47,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 08:08:47,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-07-21 08:08:47,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898895538] [2022-07-21 08:08:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:47,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:08:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:08:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:47,989 INFO L87 Difference]: Start difference. First operand 1722 states and 2189 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 08:08:48,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:48,471 INFO L93 Difference]: Finished difference Result 4048 states and 4997 transitions. [2022-07-21 08:08:48,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:08:48,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 162 [2022-07-21 08:08:48,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:48,477 INFO L225 Difference]: With dead ends: 4048 [2022-07-21 08:08:48,477 INFO L226 Difference]: Without dead ends: 2638 [2022-07-21 08:08:48,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:08:48,481 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 398 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:48,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1506 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 08:08:48,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2022-07-21 08:08:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2596. [2022-07-21 08:08:48,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.238929889298893) internal successors, (2686), 2187 states have internal predecessors, (2686), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-07-21 08:08:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3207 transitions. [2022-07-21 08:08:48,610 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3207 transitions. Word has length 162 [2022-07-21 08:08:48,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:48,610 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3207 transitions. [2022-07-21 08:08:48,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-21 08:08:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3207 transitions. [2022-07-21 08:08:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:08:48,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:48,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:48,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 08:08:48,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 08:08:48,836 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:48,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:48,836 INFO L85 PathProgramCache]: Analyzing trace with hash -60640515, now seen corresponding path program 1 times [2022-07-21 08:08:48,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:48,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732759266] [2022-07-21 08:08:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:48,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:48,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:08:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:48,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:08:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:48,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:08:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:08:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:48,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:48,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732759266] [2022-07-21 08:08:48,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732759266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:48,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:48,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:08:48,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001669424] [2022-07-21 08:08:48,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:48,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:08:48,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:48,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:08:48,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:08:48,984 INFO L87 Difference]: Start difference. First operand 2596 states and 3207 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:50,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:50,534 INFO L93 Difference]: Finished difference Result 3150 states and 4107 transitions. [2022-07-21 08:08:50,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:50,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:08:50,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:50,542 INFO L225 Difference]: With dead ends: 3150 [2022-07-21 08:08:50,542 INFO L226 Difference]: Without dead ends: 2749 [2022-07-21 08:08:50,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:08:50,545 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 1217 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:50,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1428 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:08:50,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2022-07-21 08:08:50,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2596. [2022-07-21 08:08:50,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.238468634686347) internal successors, (2685), 2187 states have internal predecessors, (2685), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-07-21 08:08:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3206 transitions. [2022-07-21 08:08:50,741 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3206 transitions. Word has length 190 [2022-07-21 08:08:50,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:50,741 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3206 transitions. [2022-07-21 08:08:50,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:50,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3206 transitions. [2022-07-21 08:08:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:08:50,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:50,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:50,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:08:50,745 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:50,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1287493055, now seen corresponding path program 1 times [2022-07-21 08:08:50,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:50,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702375371] [2022-07-21 08:08:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:50,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:50,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:08:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:50,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:08:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:08:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:50,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:08:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:50,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:50,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702375371] [2022-07-21 08:08:50,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702375371] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:50,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:50,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:08:50,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308734634] [2022-07-21 08:08:50,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:50,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:08:50,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:50,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:08:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:08:50,873 INFO L87 Difference]: Start difference. First operand 2596 states and 3206 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:52,456 INFO L93 Difference]: Finished difference Result 3142 states and 4090 transitions. [2022-07-21 08:08:52,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:08:52,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:08:52,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:52,463 INFO L225 Difference]: With dead ends: 3142 [2022-07-21 08:08:52,463 INFO L226 Difference]: Without dead ends: 2749 [2022-07-21 08:08:52,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:08:52,466 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1208 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:52,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 1426 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 08:08:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2022-07-21 08:08:52,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2596. [2022-07-21 08:08:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.2380073800738007) internal successors, (2684), 2187 states have internal predecessors, (2684), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-07-21 08:08:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3205 transitions. [2022-07-21 08:08:52,659 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3205 transitions. Word has length 190 [2022-07-21 08:08:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:52,659 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3205 transitions. [2022-07-21 08:08:52,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3205 transitions. [2022-07-21 08:08:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:08:52,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:52,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:52,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:08:52,663 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2118146689, now seen corresponding path program 1 times [2022-07-21 08:08:52,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:52,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3043577] [2022-07-21 08:08:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:52,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:52,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:08:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:52,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:08:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:08:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:52,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:08:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:52,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:52,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3043577] [2022-07-21 08:08:52,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3043577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:52,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:52,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:08:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757654208] [2022-07-21 08:08:52,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:52,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:08:52,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:52,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:08:52,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:08:52,793 INFO L87 Difference]: Start difference. First operand 2596 states and 3205 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:55,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:55,634 INFO L93 Difference]: Finished difference Result 3694 states and 4988 transitions. [2022-07-21 08:08:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:08:55,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:08:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:55,643 INFO L225 Difference]: With dead ends: 3694 [2022-07-21 08:08:55,643 INFO L226 Difference]: Without dead ends: 3308 [2022-07-21 08:08:55,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:08:55,647 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1894 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:55,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1924 Valid, 2064 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-21 08:08:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2022-07-21 08:08:55,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3001. [2022-07-21 08:08:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2544 states have (on average 1.292059748427673) internal successors, (3287), 2564 states have internal predecessors, (3287), 239 states have call successors, (239), 160 states have call predecessors, (239), 216 states have return successors, (329), 277 states have call predecessors, (329), 236 states have call successors, (329) [2022-07-21 08:08:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 3855 transitions. [2022-07-21 08:08:55,898 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 3855 transitions. Word has length 190 [2022-07-21 08:08:55,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:55,898 INFO L495 AbstractCegarLoop]: Abstraction has 3001 states and 3855 transitions. [2022-07-21 08:08:55,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:55,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 3855 transitions. [2022-07-21 08:08:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:08:55,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:55,902 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:55,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:08:55,903 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:55,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:55,903 INFO L85 PathProgramCache]: Analyzing trace with hash 271120253, now seen corresponding path program 1 times [2022-07-21 08:08:55,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:55,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112457071] [2022-07-21 08:08:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:55,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:55,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:55,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:08:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:56,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:08:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:56,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:08:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:56,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:08:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:08:56,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:08:56,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112457071] [2022-07-21 08:08:56,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112457071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:08:56,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:08:56,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:08:56,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122936125] [2022-07-21 08:08:56,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:08:56,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:08:56,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:08:56,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:08:56,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:08:56,041 INFO L87 Difference]: Start difference. First operand 3001 states and 3855 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:59,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:08:59,691 INFO L93 Difference]: Finished difference Result 4678 states and 6583 transitions. [2022-07-21 08:08:59,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:08:59,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:08:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:08:59,700 INFO L225 Difference]: With dead ends: 4678 [2022-07-21 08:08:59,700 INFO L226 Difference]: Without dead ends: 3887 [2022-07-21 08:08:59,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:08:59,703 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 1925 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3555 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 3464 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-21 08:08:59,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1955 Valid, 3464 Invalid, 3670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3555 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-21 08:08:59,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2022-07-21 08:08:59,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3377. [2022-07-21 08:08:59,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 2891 states have (on average 1.325492909028018) internal successors, (3832), 2912 states have internal predecessors, (3832), 261 states have call successors, (261), 166 states have call predecessors, (261), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2022-07-21 08:08:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4446 transitions. [2022-07-21 08:08:59,960 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4446 transitions. Word has length 190 [2022-07-21 08:08:59,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:08:59,961 INFO L495 AbstractCegarLoop]: Abstraction has 3377 states and 4446 transitions. [2022-07-21 08:08:59,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:08:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4446 transitions. [2022-07-21 08:08:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:08:59,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:08:59,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:08:59,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:08:59,965 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:08:59,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:08:59,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1652130177, now seen corresponding path program 1 times [2022-07-21 08:08:59,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:08:59,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949026153] [2022-07-21 08:08:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:08:59,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:08:59,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:08:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:08:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:00,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:00,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:00,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:00,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949026153] [2022-07-21 08:09:00,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949026153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:00,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:00,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:00,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003996436] [2022-07-21 08:09:00,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:00,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:00,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:00,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:00,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:00,101 INFO L87 Difference]: Start difference. First operand 3377 states and 4446 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:03,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:03,755 INFO L93 Difference]: Finished difference Result 6129 states and 8914 transitions. [2022-07-21 08:09:03,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:09:03,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:03,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:03,775 INFO L225 Difference]: With dead ends: 6129 [2022-07-21 08:09:03,775 INFO L226 Difference]: Without dead ends: 4962 [2022-07-21 08:09:03,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:09:03,780 INFO L413 NwaCegarLoop]: 1204 mSDtfsCounter, 1922 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3557 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 3675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:03,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1952 Valid, 3456 Invalid, 3675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3557 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 08:09:03,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2022-07-21 08:09:04,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4130. [2022-07-21 08:09:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3728388176240938) internal successors, (4923), 3609 states have internal predecessors, (4923), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-21 08:09:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5633 transitions. [2022-07-21 08:09:04,107 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5633 transitions. Word has length 190 [2022-07-21 08:09:04,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:04,107 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5633 transitions. [2022-07-21 08:09:04,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:04,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5633 transitions. [2022-07-21 08:09:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:04,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:04,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:04,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:09:04,113 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash 918228797, now seen corresponding path program 1 times [2022-07-21 08:09:04,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:04,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546595383] [2022-07-21 08:09:04,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:04,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:04,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:04,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:04,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546595383] [2022-07-21 08:09:04,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546595383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:04,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:04,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:04,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277605320] [2022-07-21 08:09:04,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:04,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:04,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:04,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:04,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:04,270 INFO L87 Difference]: Start difference. First operand 4130 states and 5633 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:06,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:06,203 INFO L93 Difference]: Finished difference Result 6870 states and 10092 transitions. [2022-07-21 08:09:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:09:06,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:06,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:06,217 INFO L225 Difference]: With dead ends: 6870 [2022-07-21 08:09:06,217 INFO L226 Difference]: Without dead ends: 4950 [2022-07-21 08:09:06,223 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 [2022-07-21 08:09:06,224 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1523 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:06,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 1986 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:09:06,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4950 states. [2022-07-21 08:09:06,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4950 to 4130. [2022-07-21 08:09:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3714445064138316) internal successors, (4918), 3609 states have internal predecessors, (4918), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-21 08:09:06,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5628 transitions. [2022-07-21 08:09:06,562 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5628 transitions. Word has length 190 [2022-07-21 08:09:06,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:06,563 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5628 transitions. [2022-07-21 08:09:06,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5628 transitions. [2022-07-21 08:09:06,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:06,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:06,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:06,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:09:06,571 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:06,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:06,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1416785599, now seen corresponding path program 1 times [2022-07-21 08:09:06,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:06,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795900059] [2022-07-21 08:09:06,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:06,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:06,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:06,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:06,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:06,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:06,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:06,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:06,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795900059] [2022-07-21 08:09:06,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795900059] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:06,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:06,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:06,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135021183] [2022-07-21 08:09:06,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:06,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:06,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:06,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:06,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:06,734 INFO L87 Difference]: Start difference. First operand 4130 states and 5628 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:08,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:08,445 INFO L93 Difference]: Finished difference Result 6864 states and 10066 transitions. [2022-07-21 08:09:08,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:09:08,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:08,457 INFO L225 Difference]: With dead ends: 6864 [2022-07-21 08:09:08,457 INFO L226 Difference]: Without dead ends: 4944 [2022-07-21 08:09:08,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:09:08,464 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 1656 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:08,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 1767 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 08:09:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2022-07-21 08:09:08,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4130. [2022-07-21 08:09:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3700501952035695) internal successors, (4913), 3609 states have internal predecessors, (4913), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-21 08:09:08,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5623 transitions. [2022-07-21 08:09:08,745 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5623 transitions. Word has length 190 [2022-07-21 08:09:08,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:08,745 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5623 transitions. [2022-07-21 08:09:08,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:08,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5623 transitions. [2022-07-21 08:09:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:08,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:08,748 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:08,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:09:08,749 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:08,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:08,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1987057405, now seen corresponding path program 1 times [2022-07-21 08:09:08,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:08,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001765656] [2022-07-21 08:09:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:08,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:08,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:08,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:08,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:08,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:08,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:08,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:08,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001765656] [2022-07-21 08:09:08,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001765656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:08,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:08,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:08,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715648963] [2022-07-21 08:09:08,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:08,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:08,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:08,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:08,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:08,892 INFO L87 Difference]: Start difference. First operand 4130 states and 5623 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:10,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:10,682 INFO L93 Difference]: Finished difference Result 6852 states and 10028 transitions. [2022-07-21 08:09:10,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:09:10,682 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:10,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:10,695 INFO L225 Difference]: With dead ends: 6852 [2022-07-21 08:09:10,695 INFO L226 Difference]: Without dead ends: 4932 [2022-07-21 08:09:10,700 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 [2022-07-21 08:09:10,700 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 1652 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:10,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1683 Valid, 1761 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 08:09:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2022-07-21 08:09:11,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4130. [2022-07-21 08:09:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3686558839933074) internal successors, (4908), 3609 states have internal predecessors, (4908), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-21 08:09:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5618 transitions. [2022-07-21 08:09:11,022 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5618 transitions. Word has length 190 [2022-07-21 08:09:11,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:11,023 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5618 transitions. [2022-07-21 08:09:11,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:11,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5618 transitions. [2022-07-21 08:09:11,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:11,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:11,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:11,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:09:11,028 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:11,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:11,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1201059515, now seen corresponding path program 1 times [2022-07-21 08:09:11,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:11,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67040399] [2022-07-21 08:09:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:11,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:11,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:11,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:11,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:11,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:11,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:11,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:11,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67040399] [2022-07-21 08:09:11,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67040399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:11,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:11,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:11,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581967749] [2022-07-21 08:09:11,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:11,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:11,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:11,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:11,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:11,180 INFO L87 Difference]: Start difference. First operand 4130 states and 5618 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:14,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:14,943 INFO L93 Difference]: Finished difference Result 8893 states and 13249 transitions. [2022-07-21 08:09:14,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:09:14,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:14,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:14,963 INFO L225 Difference]: With dead ends: 8893 [2022-07-21 08:09:14,963 INFO L226 Difference]: Without dead ends: 6973 [2022-07-21 08:09:14,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:09:14,973 INFO L413 NwaCegarLoop]: 1176 mSDtfsCounter, 1897 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3479 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 3428 SdHoareTripleChecker+Invalid, 3601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:14,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 3428 Invalid, 3601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3479 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 08:09:14,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2022-07-21 08:09:15,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 5655. [2022-07-21 08:09:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5655 states, 4995 states have (on average 1.4222222222222223) internal successors, (7104), 5022 states have internal predecessors, (7104), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2022-07-21 08:09:15,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 8012 transitions. [2022-07-21 08:09:15,442 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 8012 transitions. Word has length 190 [2022-07-21 08:09:15,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:15,442 INFO L495 AbstractCegarLoop]: Abstraction has 5655 states and 8012 transitions. [2022-07-21 08:09:15,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:15,442 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 8012 transitions. [2022-07-21 08:09:15,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:15,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:15,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:15,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:09:15,446 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:15,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:15,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1868441405, now seen corresponding path program 1 times [2022-07-21 08:09:15,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:15,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010066096] [2022-07-21 08:09:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:15,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:15,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:15,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:15,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:15,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010066096] [2022-07-21 08:09:15,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010066096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:15,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:15,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:15,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578363571] [2022-07-21 08:09:15,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:15,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:15,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:15,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:15,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:15,594 INFO L87 Difference]: Start difference. First operand 5655 states and 8012 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:17,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:17,573 INFO L93 Difference]: Finished difference Result 10442 states and 15719 transitions. [2022-07-21 08:09:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:09:17,573 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:17,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:17,592 INFO L225 Difference]: With dead ends: 10442 [2022-07-21 08:09:17,592 INFO L226 Difference]: Without dead ends: 6997 [2022-07-21 08:09:17,605 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 [2022-07-21 08:09:17,606 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 1651 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:17,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1682 Valid, 1754 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 08:09:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2022-07-21 08:09:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 5655. [2022-07-21 08:09:18,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5655 states, 4995 states have (on average 1.4204204204204205) internal successors, (7095), 5022 states have internal predecessors, (7095), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2022-07-21 08:09:18,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 8003 transitions. [2022-07-21 08:09:18,126 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 8003 transitions. Word has length 190 [2022-07-21 08:09:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:18,126 INFO L495 AbstractCegarLoop]: Abstraction has 5655 states and 8003 transitions. [2022-07-21 08:09:18,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 8003 transitions. [2022-07-21 08:09:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:18,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:18,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:18,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:09:18,131 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:18,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:18,132 INFO L85 PathProgramCache]: Analyzing trace with hash -326787461, now seen corresponding path program 1 times [2022-07-21 08:09:18,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:18,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79136347] [2022-07-21 08:09:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:18,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:18,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:18,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:18,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:18,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:18,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79136347] [2022-07-21 08:09:18,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79136347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:18,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:18,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:18,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495293875] [2022-07-21 08:09:18,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:18,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:18,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:18,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:18,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:18,270 INFO L87 Difference]: Start difference. First operand 5655 states and 8003 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:22,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:22,388 INFO L93 Difference]: Finished difference Result 14462 states and 22041 transitions. [2022-07-21 08:09:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:09:22,389 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:22,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:22,447 INFO L225 Difference]: With dead ends: 14462 [2022-07-21 08:09:22,447 INFO L226 Difference]: Without dead ends: 11017 [2022-07-21 08:09:22,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:09:22,454 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 1889 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3452 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:22,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 3417 Invalid, 3574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3452 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 08:09:22,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11017 states. [2022-07-21 08:09:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11017 to 8713. [2022-07-21 08:09:23,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8713 states, 7821 states have (on average 1.4682265694923924) internal successors, (11483), 7856 states have internal predecessors, (11483), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-07-21 08:09:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8713 states to 8713 states and 12805 transitions. [2022-07-21 08:09:23,279 INFO L78 Accepts]: Start accepts. Automaton has 8713 states and 12805 transitions. Word has length 190 [2022-07-21 08:09:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:23,279 INFO L495 AbstractCegarLoop]: Abstraction has 8713 states and 12805 transitions. [2022-07-21 08:09:23,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 8713 states and 12805 transitions. [2022-07-21 08:09:23,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:23,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:23,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:23,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 08:09:23,285 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:23,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:23,285 INFO L85 PathProgramCache]: Analyzing trace with hash 18040701, now seen corresponding path program 1 times [2022-07-21 08:09:23,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:23,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330102301] [2022-07-21 08:09:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:23,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:23,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:23,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:23,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:23,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:23,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330102301] [2022-07-21 08:09:23,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330102301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:23,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:23,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:23,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605313032] [2022-07-21 08:09:23,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:23,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:23,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:23,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:23,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:23,459 INFO L87 Difference]: Start difference. First operand 8713 states and 12805 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:26,008 INFO L93 Difference]: Finished difference Result 17610 states and 27094 transitions. [2022-07-21 08:09:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:09:26,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:26,031 INFO L225 Difference]: With dead ends: 17610 [2022-07-21 08:09:26,031 INFO L226 Difference]: Without dead ends: 11107 [2022-07-21 08:09:26,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:09:26,042 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1650 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:26,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 1747 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 08:09:26,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2022-07-21 08:09:26,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 8713. [2022-07-21 08:09:26,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8713 states, 7821 states have (on average 1.4660529344073647) internal successors, (11466), 7856 states have internal predecessors, (11466), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-07-21 08:09:26,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8713 states to 8713 states and 12788 transitions. [2022-07-21 08:09:26,863 INFO L78 Accepts]: Start accepts. Automaton has 8713 states and 12788 transitions. Word has length 190 [2022-07-21 08:09:26,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:26,864 INFO L495 AbstractCegarLoop]: Abstraction has 8713 states and 12788 transitions. [2022-07-21 08:09:26,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:26,864 INFO L276 IsEmpty]: Start isEmpty. Operand 8713 states and 12788 transitions. [2022-07-21 08:09:26,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:26,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:26,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:26,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 08:09:26,869 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:26,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash 998995515, now seen corresponding path program 1 times [2022-07-21 08:09:26,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:26,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552125310] [2022-07-21 08:09:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:26,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:26,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:26,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:26,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:27,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:27,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:27,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:27,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552125310] [2022-07-21 08:09:27,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552125310] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:27,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:27,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:27,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178496940] [2022-07-21 08:09:27,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:27,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:27,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:27,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:27,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:27,012 INFO L87 Difference]: Start difference. First operand 8713 states and 12788 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:29,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:29,840 INFO L93 Difference]: Finished difference Result 17592 states and 27007 transitions. [2022-07-21 08:09:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:09:29,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:29,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:29,862 INFO L225 Difference]: With dead ends: 17592 [2022-07-21 08:09:29,862 INFO L226 Difference]: Without dead ends: 11089 [2022-07-21 08:09:29,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:09:29,872 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1484 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:29,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1972 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:09:29,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2022-07-21 08:09:30,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 8713. [2022-07-21 08:09:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8713 states, 7821 states have (on average 1.4638792993223373) internal successors, (11449), 7856 states have internal predecessors, (11449), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-07-21 08:09:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8713 states to 8713 states and 12771 transitions. [2022-07-21 08:09:30,691 INFO L78 Accepts]: Start accepts. Automaton has 8713 states and 12771 transitions. Word has length 190 [2022-07-21 08:09:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:30,691 INFO L495 AbstractCegarLoop]: Abstraction has 8713 states and 12771 transitions. [2022-07-21 08:09:30,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 8713 states and 12771 transitions. [2022-07-21 08:09:30,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:30,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:30,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:30,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 08:09:30,696 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash -770476099, now seen corresponding path program 1 times [2022-07-21 08:09:30,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:30,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272673817] [2022-07-21 08:09:30,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:30,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:30,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:30,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:30,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:30,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:30,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:30,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:30,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:30,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272673817] [2022-07-21 08:09:30,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272673817] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:30,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:30,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:30,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585752198] [2022-07-21 08:09:30,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:30,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:30,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:30,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:30,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:30,860 INFO L87 Difference]: Start difference. First operand 8713 states and 12771 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:36,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:36,225 INFO L93 Difference]: Finished difference Result 25578 states and 39513 transitions. [2022-07-21 08:09:36,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:09:36,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:36,268 INFO L225 Difference]: With dead ends: 25578 [2022-07-21 08:09:36,269 INFO L226 Difference]: Without dead ends: 19075 [2022-07-21 08:09:36,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:09:36,289 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 1877 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3403 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 3528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:36,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1907 Valid, 3398 Invalid, 3528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3403 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 08:09:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19075 states. [2022-07-21 08:09:37,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19075 to 14876. [2022-07-21 08:09:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14876 states, 13520 states have (on average 1.497559171597633) internal successors, (20247), 13571 states have internal predecessors, (20247), 921 states have call successors, (921), 346 states have call predecessors, (921), 433 states have return successors, (1283), 990 states have call predecessors, (1283), 918 states have call successors, (1283) [2022-07-21 08:09:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14876 states to 14876 states and 22451 transitions. [2022-07-21 08:09:37,751 INFO L78 Accepts]: Start accepts. Automaton has 14876 states and 22451 transitions. Word has length 190 [2022-07-21 08:09:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:37,752 INFO L495 AbstractCegarLoop]: Abstraction has 14876 states and 22451 transitions. [2022-07-21 08:09:37,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:37,752 INFO L276 IsEmpty]: Start isEmpty. Operand 14876 states and 22451 transitions. [2022-07-21 08:09:37,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:37,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:37,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:37,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 08:09:37,758 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:37,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:37,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1381745157, now seen corresponding path program 1 times [2022-07-21 08:09:37,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:37,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025718499] [2022-07-21 08:09:37,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:37,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:37,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:37,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:37,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:37,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:37,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025718499] [2022-07-21 08:09:37,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025718499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:37,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:37,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767233992] [2022-07-21 08:09:37,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:37,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:37,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:37,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:37,893 INFO L87 Difference]: Start difference. First operand 14876 states and 22451 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:41,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:41,570 INFO L93 Difference]: Finished difference Result 31896 states and 49714 transitions. [2022-07-21 08:09:41,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:09:41,571 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:41,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:41,613 INFO L225 Difference]: With dead ends: 31896 [2022-07-21 08:09:41,613 INFO L226 Difference]: Without dead ends: 19230 [2022-07-21 08:09:41,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:09:41,635 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1646 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:41,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 1730 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 08:09:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19230 states. [2022-07-21 08:09:43,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19230 to 14876. [2022-07-21 08:09:43,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14876 states, 13520 states have (on average 1.4951183431952664) internal successors, (20214), 13571 states have internal predecessors, (20214), 921 states have call successors, (921), 346 states have call predecessors, (921), 433 states have return successors, (1283), 990 states have call predecessors, (1283), 918 states have call successors, (1283) [2022-07-21 08:09:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14876 states to 14876 states and 22418 transitions. [2022-07-21 08:09:43,410 INFO L78 Accepts]: Start accepts. Automaton has 14876 states and 22418 transitions. Word has length 190 [2022-07-21 08:09:43,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:43,411 INFO L495 AbstractCegarLoop]: Abstraction has 14876 states and 22418 transitions. [2022-07-21 08:09:43,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:43,411 INFO L276 IsEmpty]: Start isEmpty. Operand 14876 states and 22418 transitions. [2022-07-21 08:09:43,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:43,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:43,417 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:43,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 08:09:43,417 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:43,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:43,417 INFO L85 PathProgramCache]: Analyzing trace with hash 512588729, now seen corresponding path program 1 times [2022-07-21 08:09:43,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:43,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693753440] [2022-07-21 08:09:43,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:43,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:43,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:43,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:43,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:43,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:43,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:43,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:43,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693753440] [2022-07-21 08:09:43,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693753440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:43,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:43,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:43,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197789094] [2022-07-21 08:09:43,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:43,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:43,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:43,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:43,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:43,579 INFO L87 Difference]: Start difference. First operand 14876 states and 22418 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:09:53,398 INFO L93 Difference]: Finished difference Result 53543 states and 83505 transitions. [2022-07-21 08:09:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:09:53,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:09:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:09:53,492 INFO L225 Difference]: With dead ends: 53543 [2022-07-21 08:09:53,492 INFO L226 Difference]: Without dead ends: 40877 [2022-07-21 08:09:53,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:09:53,522 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 2350 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 3358 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2394 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 08:09:53,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2394 Valid, 3369 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3358 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 08:09:53,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40877 states. [2022-07-21 08:09:56,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40877 to 26943. [2022-07-21 08:09:56,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26943 states, 24691 states have (on average 1.5148839658175044) internal successors, (37404), 24774 states have internal predecessors, (37404), 1593 states have call successors, (1593), 538 states have call predecessors, (1593), 657 states have return successors, (2473), 1694 states have call predecessors, (2473), 1590 states have call successors, (2473) [2022-07-21 08:09:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26943 states to 26943 states and 41470 transitions. [2022-07-21 08:09:56,762 INFO L78 Accepts]: Start accepts. Automaton has 26943 states and 41470 transitions. Word has length 190 [2022-07-21 08:09:56,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:09:56,762 INFO L495 AbstractCegarLoop]: Abstraction has 26943 states and 41470 transitions. [2022-07-21 08:09:56,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:09:56,762 INFO L276 IsEmpty]: Start isEmpty. Operand 26943 states and 41470 transitions. [2022-07-21 08:09:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:09:56,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:09:56,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:09:56,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 08:09:56,773 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:09:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:09:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1959169595, now seen corresponding path program 1 times [2022-07-21 08:09:56,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:09:56,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187009071] [2022-07-21 08:09:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:09:56,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:09:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:09:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:09:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:09:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:09:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:09:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:09:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:09:56,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:09:56,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187009071] [2022-07-21 08:09:56,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187009071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:09:56,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:09:56,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:09:56,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349745080] [2022-07-21 08:09:56,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:09:56,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:09:56,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:09:56,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:09:56,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:09:56,970 INFO L87 Difference]: Start difference. First operand 26943 states and 41470 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:13,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:13,761 INFO L93 Difference]: Finished difference Result 101992 states and 160555 transitions. [2022-07-21 08:10:13,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:10:13,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:10:13,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:13,967 INFO L225 Difference]: With dead ends: 101992 [2022-07-21 08:10:13,967 INFO L226 Difference]: Without dead ends: 77259 [2022-07-21 08:10:14,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:10:14,031 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 1977 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 3910 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 4037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:14,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2006 Valid, 3556 Invalid, 4037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3910 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 08:10:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77259 states. [2022-07-21 08:10:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77259 to 51296. [2022-07-21 08:10:20,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51296 states, 47284 states have (on average 1.528085610354454) internal successors, (72254), 47431 states have internal predecessors, (72254), 2905 states have call successors, (2905), 922 states have call predecessors, (2905), 1105 states have return successors, (5307), 3070 states have call predecessors, (5307), 2902 states have call successors, (5307) [2022-07-21 08:10:20,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51296 states to 51296 states and 80466 transitions. [2022-07-21 08:10:20,593 INFO L78 Accepts]: Start accepts. Automaton has 51296 states and 80466 transitions. Word has length 190 [2022-07-21 08:10:20,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:20,593 INFO L495 AbstractCegarLoop]: Abstraction has 51296 states and 80466 transitions. [2022-07-21 08:10:20,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:20,593 INFO L276 IsEmpty]: Start isEmpty. Operand 51296 states and 80466 transitions. [2022-07-21 08:10:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:10:20,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:20,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:20,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-21 08:10:20,609 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:20,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1036002169, now seen corresponding path program 1 times [2022-07-21 08:10:20,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:20,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036344102] [2022-07-21 08:10:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:20,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:10:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:10:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:10:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:20,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:10:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:20,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:20,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036344102] [2022-07-21 08:10:20,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036344102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:20,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:20,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:20,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432103253] [2022-07-21 08:10:20,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:20,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:20,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:20,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:20,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:20,759 INFO L87 Difference]: Start difference. First operand 51296 states and 80466 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:32,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 08:10:32,696 INFO L93 Difference]: Finished difference Result 116186 states and 186107 transitions. [2022-07-21 08:10:32,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:10:32,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-21 08:10:32,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 08:10:32,902 INFO L225 Difference]: With dead ends: 116186 [2022-07-21 08:10:32,903 INFO L226 Difference]: Without dead ends: 67100 [2022-07-21 08:10:32,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:10:32,997 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 1416 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 08:10:32,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1983 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 08:10:33,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67100 states. [2022-07-21 08:10:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67100 to 51296. [2022-07-21 08:10:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51296 states, 47284 states have (on average 1.525357414770324) internal successors, (72125), 47431 states have internal predecessors, (72125), 2905 states have call successors, (2905), 922 states have call predecessors, (2905), 1105 states have return successors, (5307), 3070 states have call predecessors, (5307), 2902 states have call successors, (5307) [2022-07-21 08:10:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51296 states to 51296 states and 80337 transitions. [2022-07-21 08:10:39,746 INFO L78 Accepts]: Start accepts. Automaton has 51296 states and 80337 transitions. Word has length 190 [2022-07-21 08:10:39,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 08:10:39,747 INFO L495 AbstractCegarLoop]: Abstraction has 51296 states and 80337 transitions. [2022-07-21 08:10:39,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 08:10:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 51296 states and 80337 transitions. [2022-07-21 08:10:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 08:10:39,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 08:10:39,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:10:39,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-21 08:10:39,763 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 08:10:39,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:10:39,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1421864571, now seen corresponding path program 1 times [2022-07-21 08:10:39,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:10:39,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578603739] [2022-07-21 08:10:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:10:39,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:10:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 08:10:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 08:10:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 08:10:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 08:10:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 08:10:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:10:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:10:39,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:10:39,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578603739] [2022-07-21 08:10:39,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578603739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:10:39,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:10:39,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:10:39,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722702985] [2022-07-21 08:10:39,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:10:39,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:10:39,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:10:39,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:10:39,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:10:39,916 INFO L87 Difference]: Start difference. First operand 51296 states and 80337 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)