./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label40+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/Problem05_label40+token_ring.12.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e81bb624b13c4231a79ab1bd2052849a1a89cc393bc6bb2c02746b61da23cad6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:14:19,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:14:19,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:14:19,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:14:19,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:14:19,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:14:19,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:14:19,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:14:19,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:14:19,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:14:19,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:14:19,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:14:19,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:14:19,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:14:19,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:14:19,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:14:19,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:14:19,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:14:19,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:14:19,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:14:19,425 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:14:19,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:14:19,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:14:19,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:14:19,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:14:19,430 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:14:19,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:14:19,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:14:19,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:14:19,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:14:19,432 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:14:19,432 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:14:19,433 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:14:19,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:14:19,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:14:19,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:14:19,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:14:19,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:14:19,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:14:19,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:14:19,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:14:19,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:14:19,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:14:19,452 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:14:19,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:14:19,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:14:19,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:14:19,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:14:19,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:14:19,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:14:19,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:14:19,454 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:14:19,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:14:19,455 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:14:19,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:14:19,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:14:19,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:14:19,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:14:19,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:14:19,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:14:19,456 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:14:19,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:14:19,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:14:19,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:14:19,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:14:19,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:14:19,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:14:19,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:14:19,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:14:19,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:14:19,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:14:19,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:14:19,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:14:19,458 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:14:19,458 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:14:19,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:14:19,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e81bb624b13c4231a79ab1bd2052849a1a89cc393bc6bb2c02746b61da23cad6 [2022-07-19 19:14:19,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:14:19,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:14:19,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:14:19,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:14:19,679 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:14:19,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label40+token_ring.12.cil-2.c [2022-07-19 19:14:19,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2ebee20/19d5d351be764ae6a6101b50fd60f383/FLAGbab49229a [2022-07-19 19:14:20,454 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:14:20,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label40+token_ring.12.cil-2.c [2022-07-19 19:14:20,492 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2ebee20/19d5d351be764ae6a6101b50fd60f383/FLAGbab49229a [2022-07-19 19:14:20,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f2ebee20/19d5d351be764ae6a6101b50fd60f383 [2022-07-19 19:14:20,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:14:20,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:14:21,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:14:21,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:14:21,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:14:21,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:14:20" (1/1) ... [2022-07-19 19:14:21,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708521c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:21, skipping insertion in model container [2022-07-19 19:14:21,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:14:20" (1/1) ... [2022-07-19 19:14:21,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:14:21,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:14:22,503 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/Problem05_label40+token_ring.12.cil-2.c[377069,377082] [2022-07-19 19:14:22,522 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/Problem05_label40+token_ring.12.cil-2.c[383339,383352] [2022-07-19 19:14:22,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:14:22,749 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:14:23,332 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/Problem05_label40+token_ring.12.cil-2.c[377069,377082] [2022-07-19 19:14:23,339 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/Problem05_label40+token_ring.12.cil-2.c[383339,383352] [2022-07-19 19:14:23,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:14:23,400 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:14:23,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23 WrapperNode [2022-07-19 19:14:23,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:14:23,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:14:23,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:14:23,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:14:23,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23" (1/1) ... [2022-07-19 19:14:23,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23" (1/1) ... [2022-07-19 19:14:23,910 INFO L137 Inliner]: procedures = 68, calls = 77, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 13199 [2022-07-19 19:14:23,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:14:23,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:14:23,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:14:23,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:14:23,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23" (1/1) ... [2022-07-19 19:14:23,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23" (1/1) ... [2022-07-19 19:14:23,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23" (1/1) ... [2022-07-19 19:14:23,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23" (1/1) ... [2022-07-19 19:14:24,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23" (1/1) ... [2022-07-19 19:14:24,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23" (1/1) ... [2022-07-19 19:14:24,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23" (1/1) ... [2022-07-19 19:14:24,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:14:24,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:14:24,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:14:24,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:14:24,378 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23" (1/1) ... [2022-07-19 19:14:24,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:14:24,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:14:24,429 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) [2022-07-19 19:14:24,463 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 [2022-07-19 19:14:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:14:24,496 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 19:14:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 19:14:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 19:14:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 19:14:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 19:14:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 19:14:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 19:14:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 19:14:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 19:14:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 19:14:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 19:14:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 19:14:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:14:24,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:14:24,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:14:24,698 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:14:24,701 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:14:29,625 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:14:29,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:14:29,646 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-19 19:14:29,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:14:29 BoogieIcfgContainer [2022-07-19 19:14:29,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:14:29,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:14:29,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:14:29,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:14:29,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:14:20" (1/3) ... [2022-07-19 19:14:29,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad353d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:14:29, skipping insertion in model container [2022-07-19 19:14:29,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:14:23" (2/3) ... [2022-07-19 19:14:29,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad353d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:14:29, skipping insertion in model container [2022-07-19 19:14:29,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:14:29" (3/3) ... [2022-07-19 19:14:29,653 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label40+token_ring.12.cil-2.c [2022-07-19 19:14:29,662 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:14:29,662 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:14:29,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:14:29,720 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@ddd324, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f5b0d5c [2022-07-19 19:14:29,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:14:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 19:14:29,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:14:29,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:14:29,743 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] [2022-07-19 19:14:29,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:14:29,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:14:29,747 INFO L85 PathProgramCache]: Analyzing trace with hash 10619845, now seen corresponding path program 1 times [2022-07-19 19:14:29,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:14:29,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232168925] [2022-07-19 19:14:29,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:14:29,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:14:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:29,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:14:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:29,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:14:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:29,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:14:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:14:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:30,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:14:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:14:30,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:14:30,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232168925] [2022-07-19 19:14:30,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232168925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:14:30,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:14:30,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:14:30,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572927178] [2022-07-19 19:14:30,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:14:30,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:14:30,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:14:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:14:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:14:30,084 INFO L87 Difference]: Start difference. First operand has 2565 states, 2530 states have (on average 1.8430830039525692) internal successors, (4663), 2533 states have internal predecessors, (4663), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:31,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:14:31,819 INFO L93 Difference]: Finished difference Result 5266 states and 9664 transitions. [2022-07-19 19:14:31,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:14:31,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:14:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:14:31,858 INFO L225 Difference]: With dead ends: 5266 [2022-07-19 19:14:31,859 INFO L226 Difference]: Without dead ends: 2640 [2022-07-19 19:14:31,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:14:31,868 INFO L413 NwaCegarLoop]: 4683 mSDtfsCounter, 1034 mSDsluCounter, 12465 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 17148 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:14:31,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 17148 Invalid, 783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 19:14:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2022-07-19 19:14:31,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2022-07-19 19:14:31,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8262987012987013) internal successors, (4500), 2466 states have internal predecessors, (4500), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 19:14:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4552 transitions. [2022-07-19 19:14:31,963 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4552 transitions. Word has length 178 [2022-07-19 19:14:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:14:31,964 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4552 transitions. [2022-07-19 19:14:31,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:31,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4552 transitions. [2022-07-19 19:14:31,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:14:31,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:14:31,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:14:31,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:14:31,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:14:31,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:14:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash -79440445, now seen corresponding path program 1 times [2022-07-19 19:14:31,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:14:31,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240848008] [2022-07-19 19:14:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:14:31,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:14:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:32,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:14:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:14:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:14:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:32,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:14:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:14:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:14:32,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:14:32,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240848008] [2022-07-19 19:14:32,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240848008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:14:32,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:14:32,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:14:32,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645361913] [2022-07-19 19:14:32,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:14:32,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:14:32,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:14:32,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:14:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:14:32,184 INFO L87 Difference]: Start difference. First operand 2498 states and 4552 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:33,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:14:33,472 INFO L93 Difference]: Finished difference Result 3002 states and 5366 transitions. [2022-07-19 19:14:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:14:33,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:14:33,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:14:33,483 INFO L225 Difference]: With dead ends: 3002 [2022-07-19 19:14:33,484 INFO L226 Difference]: Without dead ends: 2640 [2022-07-19 19:14:33,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 19:14:33,487 INFO L413 NwaCegarLoop]: 4613 mSDtfsCounter, 1020 mSDsluCounter, 12262 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 16875 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:14:33,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 16875 Invalid, 782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 19:14:33,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2022-07-19 19:14:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2498. [2022-07-19 19:14:33,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 2464 states have (on average 1.8258928571428572) internal successors, (4499), 2466 states have internal predecessors, (4499), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-19 19:14:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 4551 transitions. [2022-07-19 19:14:33,549 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 4551 transitions. Word has length 178 [2022-07-19 19:14:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:14:33,549 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 4551 transitions. [2022-07-19 19:14:33,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 4551 transitions. [2022-07-19 19:14:33,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:14:33,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:14:33,552 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] [2022-07-19 19:14:33,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:14:33,552 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:14:33,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:14:33,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1483309631, now seen corresponding path program 1 times [2022-07-19 19:14:33,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:14:33,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176892716] [2022-07-19 19:14:33,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:14:33,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:14:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:33,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:14:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:33,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:14:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:33,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:14:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:14:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:33,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:14:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:14:33,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:14:33,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176892716] [2022-07-19 19:14:33,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176892716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:14:33,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:14:33,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:14:33,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061104029] [2022-07-19 19:14:33,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:14:33,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:14:33,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:14:33,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:14:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:14:33,823 INFO L87 Difference]: Start difference. First operand 2498 states and 4551 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:36,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:14:36,441 INFO L93 Difference]: Finished difference Result 3514 states and 6198 transitions. [2022-07-19 19:14:36,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:14:36,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:14:36,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:14:36,452 INFO L225 Difference]: With dead ends: 3514 [2022-07-19 19:14:36,453 INFO L226 Difference]: Without dead ends: 3157 [2022-07-19 19:14:36,456 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 [2022-07-19 19:14:36,457 INFO L413 NwaCegarLoop]: 4665 mSDtfsCounter, 5509 mSDsluCounter, 12816 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 17481 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:14:36,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5528 Valid, 17481 Invalid, 2130 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 19:14:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2022-07-19 19:14:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2874. [2022-07-19 19:14:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2812 states have (on average 1.7976529160739687) internal successors, (5055), 2815 states have internal predecessors, (5055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-19 19:14:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 5152 transitions. [2022-07-19 19:14:36,531 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 5152 transitions. Word has length 178 [2022-07-19 19:14:36,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:14:36,531 INFO L495 AbstractCegarLoop]: Abstraction has 2874 states and 5152 transitions. [2022-07-19 19:14:36,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:36,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 5152 transitions. [2022-07-19 19:14:36,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:14:36,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:14:36,534 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] [2022-07-19 19:14:36,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 19:14:36,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:14:36,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:14:36,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1935672389, now seen corresponding path program 1 times [2022-07-19 19:14:36,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:14:36,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876317915] [2022-07-19 19:14:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:14:36,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:14:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:14:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:14:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:36,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:14:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:36,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:14:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:36,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:14:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:36,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:14:36,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:14:36,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876317915] [2022-07-19 19:14:36,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876317915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:14:36,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:14:36,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:14:36,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693203344] [2022-07-19 19:14:36,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:14:36,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:14:36,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:14:36,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:14:36,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:14:36,663 INFO L87 Difference]: Start difference. First operand 2874 states and 5152 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:14:39,780 INFO L93 Difference]: Finished difference Result 4427 states and 7672 transitions. [2022-07-19 19:14:39,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:14:39,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:14:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:14:39,796 INFO L225 Difference]: With dead ends: 4427 [2022-07-19 19:14:39,796 INFO L226 Difference]: Without dead ends: 3694 [2022-07-19 19:14:39,800 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 [2022-07-19 19:14:39,801 INFO L413 NwaCegarLoop]: 4964 mSDtfsCounter, 5539 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3126 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5558 SdHoareTripleChecker+Valid, 22665 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:14:39,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5558 Valid, 22665 Invalid, 3202 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 3126 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 19:14:39,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3694 states. [2022-07-19 19:14:39,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3694 to 3223. [2022-07-19 19:14:39,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3223 states, 3133 states have (on average 1.7736993297159271) internal successors, (5557), 3137 states have internal predecessors, (5557), 68 states have call successors, (68), 18 states have call predecessors, (68), 20 states have return successors, (73), 69 states have call predecessors, (73), 68 states have call successors, (73) [2022-07-19 19:14:39,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3223 states to 3223 states and 5698 transitions. [2022-07-19 19:14:39,946 INFO L78 Accepts]: Start accepts. Automaton has 3223 states and 5698 transitions. Word has length 178 [2022-07-19 19:14:39,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:14:39,947 INFO L495 AbstractCegarLoop]: Abstraction has 3223 states and 5698 transitions. [2022-07-19 19:14:39,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:39,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3223 states and 5698 transitions. [2022-07-19 19:14:39,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:14:39,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:14:39,954 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] [2022-07-19 19:14:39,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 19:14:39,955 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:14:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:14:39,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1324403331, now seen corresponding path program 1 times [2022-07-19 19:14:39,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:14:39,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353490201] [2022-07-19 19:14:39,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:14:39,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:14:39,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:39,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:14:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:40,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:14:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:40,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:14:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:14:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:40,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:14:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:14:40,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:14:40,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353490201] [2022-07-19 19:14:40,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353490201] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:14:40,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:14:40,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:14:40,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339278436] [2022-07-19 19:14:40,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:14:40,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:14:40,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:14:40,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:14:40,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:14:40,118 INFO L87 Difference]: Start difference. First operand 3223 states and 5698 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:43,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:14:43,308 INFO L93 Difference]: Finished difference Result 5773 states and 9826 transitions. [2022-07-19 19:14:43,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:14:43,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:14:43,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:14:43,327 INFO L225 Difference]: With dead ends: 5773 [2022-07-19 19:14:43,327 INFO L226 Difference]: Without dead ends: 4691 [2022-07-19 19:14:43,331 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 [2022-07-19 19:14:43,333 INFO L413 NwaCegarLoop]: 4709 mSDtfsCounter, 5648 mSDsluCounter, 17063 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5667 SdHoareTripleChecker+Valid, 21772 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:14:43,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5667 Valid, 21772 Invalid, 2893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 19:14:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4691 states. [2022-07-19 19:14:43,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4691 to 3922. [2022-07-19 19:14:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3922 states, 3776 states have (on average 1.7378177966101696) internal successors, (6562), 3782 states have internal predecessors, (6562), 110 states have call successors, (110), 30 states have call predecessors, (110), 34 states have return successors, (123), 113 states have call predecessors, (123), 110 states have call successors, (123) [2022-07-19 19:14:43,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3922 states to 3922 states and 6795 transitions. [2022-07-19 19:14:43,463 INFO L78 Accepts]: Start accepts. Automaton has 3922 states and 6795 transitions. Word has length 178 [2022-07-19 19:14:43,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:14:43,463 INFO L495 AbstractCegarLoop]: Abstraction has 3922 states and 6795 transitions. [2022-07-19 19:14:43,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3922 states and 6795 transitions. [2022-07-19 19:14:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:14:43,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:14:43,476 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] [2022-07-19 19:14:43,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 19:14:43,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:14:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:14:43,478 INFO L85 PathProgramCache]: Analyzing trace with hash -80788347, now seen corresponding path program 1 times [2022-07-19 19:14:43,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:14:43,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698986446] [2022-07-19 19:14:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:14:43,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:14:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:14:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:43,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:14:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:43,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:14:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:43,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:14:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:14:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:14:43,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:14:43,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698986446] [2022-07-19 19:14:43,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698986446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:14:43,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:14:43,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:14:43,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656044656] [2022-07-19 19:14:43,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:14:43,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:14:43,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:14:43,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:14:43,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:14:43,621 INFO L87 Difference]: Start difference. First operand 3922 states and 6795 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:46,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:14:46,772 INFO L93 Difference]: Finished difference Result 8360 states and 13939 transitions. [2022-07-19 19:14:46,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:14:46,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:14:46,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:14:46,791 INFO L225 Difference]: With dead ends: 8360 [2022-07-19 19:14:46,791 INFO L226 Difference]: Without dead ends: 6579 [2022-07-19 19:14:46,794 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 [2022-07-19 19:14:46,795 INFO L413 NwaCegarLoop]: 4952 mSDtfsCounter, 5534 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3125 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5553 SdHoareTripleChecker+Valid, 22653 SdHoareTripleChecker+Invalid, 3206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:14:46,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5553 Valid, 22653 Invalid, 3206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 3125 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 19:14:46,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2022-07-19 19:14:46,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 5321. [2022-07-19 19:14:46,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5321 states, 5063 states have (on average 1.693067351372704) internal successors, (8572), 5073 states have internal predecessors, (8572), 194 states have call successors, (194), 54 states have call predecessors, (194), 62 states have return successors, (229), 201 states have call predecessors, (229), 194 states have call successors, (229) [2022-07-19 19:14:46,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5321 states to 5321 states and 8995 transitions. [2022-07-19 19:14:46,976 INFO L78 Accepts]: Start accepts. Automaton has 5321 states and 8995 transitions. Word has length 178 [2022-07-19 19:14:46,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:14:46,976 INFO L495 AbstractCegarLoop]: Abstraction has 5321 states and 8995 transitions. [2022-07-19 19:14:46,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 5321 states and 8995 transitions. [2022-07-19 19:14:46,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:14:46,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:14:46,979 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] [2022-07-19 19:14:46,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 19:14:46,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:14:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:14:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1813545539, now seen corresponding path program 1 times [2022-07-19 19:14:46,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:14:46,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862704326] [2022-07-19 19:14:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:14:46,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:14:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:14:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:47,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:14:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:47,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:14:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:14:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:14:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:14:47,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:14:47,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862704326] [2022-07-19 19:14:47,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862704326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:14:47,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:14:47,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:14:47,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894114082] [2022-07-19 19:14:47,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:14:47,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:14:47,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:14:47,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:14:47,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:14:47,113 INFO L87 Difference]: Start difference. First operand 5321 states and 8995 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:14:50,279 INFO L93 Difference]: Finished difference Result 13526 states and 22169 transitions. [2022-07-19 19:14:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:14:50,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:14:50,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:14:50,323 INFO L225 Difference]: With dead ends: 13526 [2022-07-19 19:14:50,324 INFO L226 Difference]: Without dead ends: 10346 [2022-07-19 19:14:50,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:14:50,445 INFO L413 NwaCegarLoop]: 4944 mSDtfsCounter, 5529 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3105 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5548 SdHoareTripleChecker+Valid, 22645 SdHoareTripleChecker+Invalid, 3187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:14:50,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5548 Valid, 22645 Invalid, 3187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3105 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 19:14:50,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10346 states. [2022-07-19 19:14:50,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10346 to 8133. [2022-07-19 19:14:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8133 states, 7651 states have (on average 1.6489347797673506) internal successors, (12616), 7669 states have internal predecessors, (12616), 362 states have call successors, (362), 102 states have call predecessors, (362), 118 states have return successors, (459), 377 states have call predecessors, (459), 362 states have call successors, (459) [2022-07-19 19:14:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8133 states to 8133 states and 13437 transitions. [2022-07-19 19:14:50,760 INFO L78 Accepts]: Start accepts. Automaton has 8133 states and 13437 transitions. Word has length 178 [2022-07-19 19:14:50,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:14:50,761 INFO L495 AbstractCegarLoop]: Abstraction has 8133 states and 13437 transitions. [2022-07-19 19:14:50,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:50,761 INFO L276 IsEmpty]: Start isEmpty. Operand 8133 states and 13437 transitions. [2022-07-19 19:14:50,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:14:50,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:14:50,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:14:50,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 19:14:50,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:14:50,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:14:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash 890378113, now seen corresponding path program 1 times [2022-07-19 19:14:50,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:14:50,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793277158] [2022-07-19 19:14:50,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:14:50,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:14:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:50,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:14:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:50,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:14:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:50,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:14:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:50,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:14:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:14:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:14:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:14:50,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793277158] [2022-07-19 19:14:50,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793277158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:14:50,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:14:50,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:14:50,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094587022] [2022-07-19 19:14:50,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:14:50,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:14:50,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:14:50,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:14:50,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:14:50,892 INFO L87 Difference]: Start difference. First operand 8133 states and 13437 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:54,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:14:54,669 INFO L93 Difference]: Finished difference Result 23876 states and 38721 transitions. [2022-07-19 19:14:54,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:14:54,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:14:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:14:54,745 INFO L225 Difference]: With dead ends: 23876 [2022-07-19 19:14:54,745 INFO L226 Difference]: Without dead ends: 17884 [2022-07-19 19:14:54,764 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 [2022-07-19 19:14:54,765 INFO L413 NwaCegarLoop]: 4939 mSDtfsCounter, 5528 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3097 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5547 SdHoareTripleChecker+Valid, 22640 SdHoareTripleChecker+Invalid, 3179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:14:54,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5547 Valid, 22640 Invalid, 3179 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3097 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 19:14:54,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17884 states. [2022-07-19 19:14:55,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17884 to 13770. [2022-07-19 19:14:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6138629283489097) internal successors, (20722), 12874 states have internal predecessors, (20722), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-19 19:14:55,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22393 transitions. [2022-07-19 19:14:55,505 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22393 transitions. Word has length 178 [2022-07-19 19:14:55,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:14:55,505 INFO L495 AbstractCegarLoop]: Abstraction has 13770 states and 22393 transitions. [2022-07-19 19:14:55,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:55,506 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22393 transitions. [2022-07-19 19:14:55,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:14:55,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:14:55,513 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] [2022-07-19 19:14:55,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 19:14:55,514 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:14:55,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:14:55,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1276240515, now seen corresponding path program 1 times [2022-07-19 19:14:55,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:14:55,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384861273] [2022-07-19 19:14:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:14:55,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:14:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:55,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:14:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:55,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:14:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:14:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:55,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:14:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:14:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:55,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:14:55,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:14:55,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384861273] [2022-07-19 19:14:55,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384861273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:14:55,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:14:55,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:14:55,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472839942] [2022-07-19 19:14:55,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:14:55,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:14:55,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:14:55,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:14:55,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:14:55,664 INFO L87 Difference]: Start difference. First operand 13770 states and 22393 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:58,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:14:58,047 INFO L93 Difference]: Finished difference Result 29766 states and 48386 transitions. [2022-07-19 19:14:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:14:58,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:14:58,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:14:58,092 INFO L225 Difference]: With dead ends: 29766 [2022-07-19 19:14:58,092 INFO L226 Difference]: Without dead ends: 18137 [2022-07-19 19:14:58,120 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 [2022-07-19 19:14:58,122 INFO L413 NwaCegarLoop]: 4589 mSDtfsCounter, 5079 mSDsluCounter, 16760 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5099 SdHoareTripleChecker+Valid, 21349 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:14:58,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5099 Valid, 21349 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 19:14:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18137 states. [2022-07-19 19:14:58,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18137 to 13770. [2022-07-19 19:14:58,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13770 states, 12840 states have (on average 1.6112928348909656) internal successors, (20689), 12874 states have internal predecessors, (20689), 698 states have call successors, (698), 198 states have call predecessors, (698), 230 states have return successors, (973), 729 states have call predecessors, (973), 698 states have call successors, (973) [2022-07-19 19:14:58,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13770 states to 13770 states and 22360 transitions. [2022-07-19 19:14:58,878 INFO L78 Accepts]: Start accepts. Automaton has 13770 states and 22360 transitions. Word has length 178 [2022-07-19 19:14:58,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:14:58,878 INFO L495 AbstractCegarLoop]: Abstraction has 13770 states and 22360 transitions. [2022-07-19 19:14:58,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:14:58,879 INFO L276 IsEmpty]: Start isEmpty. Operand 13770 states and 22360 transitions. [2022-07-19 19:14:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:14:58,903 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:14:58,903 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] [2022-07-19 19:14:58,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 19:14:58,903 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:14:58,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:14:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1011593025, now seen corresponding path program 1 times [2022-07-19 19:14:58,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:14:58,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470558238] [2022-07-19 19:14:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:14:58,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:14:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:14:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:59,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:14:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:59,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:14:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:59,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:14:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:14:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:14:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:14:59,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:14:59,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470558238] [2022-07-19 19:14:59,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470558238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:14:59,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:14:59,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:14:59,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225125145] [2022-07-19 19:14:59,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:14:59,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:14:59,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:14:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:14:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:14:59,086 INFO L87 Difference]: Start difference. First operand 13770 states and 22360 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:15:04,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:15:04,084 INFO L93 Difference]: Finished difference Result 44541 states and 71783 transitions. [2022-07-19 19:15:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:15:04,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:15:04,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:15:04,224 INFO L225 Difference]: With dead ends: 44541 [2022-07-19 19:15:04,224 INFO L226 Difference]: Without dead ends: 32912 [2022-07-19 19:15:04,251 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 [2022-07-19 19:15:04,252 INFO L413 NwaCegarLoop]: 4928 mSDtfsCounter, 5520 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3070 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5539 SdHoareTripleChecker+Valid, 22629 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 19:15:04,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5539 Valid, 22629 Invalid, 3152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3070 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 19:15:04,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32912 states. [2022-07-19 19:15:05,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32912 to 25108. [2022-07-19 19:15:05,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25108 states, 23282 states have (on average 1.587020015462589) internal successors, (36949), 23348 states have internal predecessors, (36949), 1370 states have call successors, (1370), 390 states have call predecessors, (1370), 454 states have return successors, (2163), 1433 states have call predecessors, (2163), 1370 states have call successors, (2163) [2022-07-19 19:15:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25108 states to 25108 states and 40482 transitions. [2022-07-19 19:15:05,732 INFO L78 Accepts]: Start accepts. Automaton has 25108 states and 40482 transitions. Word has length 178 [2022-07-19 19:15:05,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:15:05,732 INFO L495 AbstractCegarLoop]: Abstraction has 25108 states and 40482 transitions. [2022-07-19 19:15:05,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:15:05,732 INFO L276 IsEmpty]: Start isEmpty. Operand 25108 states and 40482 transitions. [2022-07-19 19:15:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:15:05,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:15:05,743 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] [2022-07-19 19:15:05,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 19:15:05,744 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:15:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:15:05,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1352248637, now seen corresponding path program 1 times [2022-07-19 19:15:05,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:15:05,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135384686] [2022-07-19 19:15:05,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:15:05,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:15:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:05,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:15:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:15:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:15:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:05,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:15:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:05,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:15:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:05,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:15:05,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:15:05,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135384686] [2022-07-19 19:15:05,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135384686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:15:05,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:15:05,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:15:05,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837166024] [2022-07-19 19:15:05,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:15:05,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:15:05,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:15:05,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:15:05,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:15:05,912 INFO L87 Difference]: Start difference. First operand 25108 states and 40482 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:15:13,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:15:13,099 INFO L93 Difference]: Finished difference Result 85941 states and 138783 transitions. [2022-07-19 19:15:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:15:13,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:15:13,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:15:13,353 INFO L225 Difference]: With dead ends: 85941 [2022-07-19 19:15:13,354 INFO L226 Difference]: Without dead ends: 62974 [2022-07-19 19:15:13,414 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 [2022-07-19 19:15:13,414 INFO L413 NwaCegarLoop]: 4923 mSDtfsCounter, 5519 mSDsluCounter, 17701 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5538 SdHoareTripleChecker+Valid, 22624 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:15:13,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5538 Valid, 22624 Invalid, 3144 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 19:15:13,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62974 states. [2022-07-19 19:15:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62974 to 47845. [2022-07-19 19:15:16,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47845 states, 44227 states have (on average 1.5727722884211002) internal successors, (69559), 44357 states have internal predecessors, (69559), 2714 states have call successors, (2714), 774 states have call predecessors, (2714), 902 states have return successors, (5029), 2841 states have call predecessors, (5029), 2714 states have call successors, (5029) [2022-07-19 19:15:17,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47845 states to 47845 states and 77302 transitions. [2022-07-19 19:15:17,036 INFO L78 Accepts]: Start accepts. Automaton has 47845 states and 77302 transitions. Word has length 178 [2022-07-19 19:15:17,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:15:17,036 INFO L495 AbstractCegarLoop]: Abstraction has 47845 states and 77302 transitions. [2022-07-19 19:15:17,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:15:17,037 INFO L276 IsEmpty]: Start isEmpty. Operand 47845 states and 77302 transitions. [2022-07-19 19:15:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:15:17,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:15:17,056 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] [2022-07-19 19:15:17,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 19:15:17,056 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:15:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:15:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1619539713, now seen corresponding path program 1 times [2022-07-19 19:15:17,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:15:17,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913131309] [2022-07-19 19:15:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:15:17,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:15:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:17,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:15:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:15:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:17,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:15:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:15:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:17,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:15:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:17,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:15:17,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:15:17,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913131309] [2022-07-19 19:15:17,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913131309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:15:17,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:15:17,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:15:17,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849015387] [2022-07-19 19:15:17,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:15:17,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:15:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:15:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:15:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:15:17,192 INFO L87 Difference]: Start difference. First operand 47845 states and 77302 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:15:29,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:15:29,045 INFO L93 Difference]: Finished difference Result 168740 states and 274629 transitions. [2022-07-19 19:15:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:15:29,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:15:29,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:15:29,512 INFO L225 Difference]: With dead ends: 168740 [2022-07-19 19:15:29,513 INFO L226 Difference]: Without dead ends: 123036 [2022-07-19 19:15:29,647 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 [2022-07-19 19:15:29,648 INFO L413 NwaCegarLoop]: 4683 mSDtfsCounter, 5618 mSDsluCounter, 17063 mSDsCounter, 0 mSdLazyCounter, 2728 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5637 SdHoareTripleChecker+Valid, 21746 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:15:29,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5637 Valid, 21746 Invalid, 2846 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2728 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 19:15:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123036 states. [2022-07-19 19:15:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123036 to 93446. [2022-07-19 19:15:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93446 states, 86244 states have (on average 1.5649668382728075) internal successors, (134969), 86502 states have internal predecessors, (134969), 5402 states have call successors, (5402), 1542 states have call predecessors, (5402), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2022-07-19 19:15:36,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93446 states to 93446 states and 152590 transitions. [2022-07-19 19:15:36,414 INFO L78 Accepts]: Start accepts. Automaton has 93446 states and 152590 transitions. Word has length 178 [2022-07-19 19:15:36,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:15:36,414 INFO L495 AbstractCegarLoop]: Abstraction has 93446 states and 152590 transitions. [2022-07-19 19:15:36,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:15:36,414 INFO L276 IsEmpty]: Start isEmpty. Operand 93446 states and 152590 transitions. [2022-07-19 19:15:36,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:15:36,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:15:36,449 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] [2022-07-19 19:15:36,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 19:15:36,449 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:15:36,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:15:36,450 INFO L85 PathProgramCache]: Analyzing trace with hash -778448125, now seen corresponding path program 1 times [2022-07-19 19:15:36,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:15:36,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942544022] [2022-07-19 19:15:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:15:36,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:15:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:15:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:15:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:36,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:15:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:15:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:36,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:15:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:36,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:15:36,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:15:36,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942544022] [2022-07-19 19:15:36,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942544022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:15:36,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:15:36,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:15:36,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272272746] [2022-07-19 19:15:36,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:15:36,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:15:36,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:15:36,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:15:36,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:15:36,579 INFO L87 Difference]: Start difference. First operand 93446 states and 152590 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:15:48,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:15:48,807 INFO L93 Difference]: Finished difference Result 216214 states and 359849 transitions. [2022-07-19 19:15:48,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:15:48,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-07-19 19:15:48,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:15:49,561 INFO L225 Difference]: With dead ends: 216214 [2022-07-19 19:15:49,561 INFO L226 Difference]: Without dead ends: 124909 [2022-07-19 19:15:49,738 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 [2022-07-19 19:15:49,744 INFO L413 NwaCegarLoop]: 4574 mSDtfsCounter, 5082 mSDsluCounter, 16760 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5102 SdHoareTripleChecker+Valid, 21334 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:15:49,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5102 Valid, 21334 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 19:15:49,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124909 states. [2022-07-19 19:15:56,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124909 to 93446. [2022-07-19 19:15:57,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93446 states, 86244 states have (on average 1.5619869208292751) internal successors, (134712), 86502 states have internal predecessors, (134712), 5402 states have call successors, (5402), 1542 states have call predecessors, (5402), 1798 states have return successors, (12219), 5657 states have call predecessors, (12219), 5402 states have call successors, (12219) [2022-07-19 19:15:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93446 states to 93446 states and 152333 transitions. [2022-07-19 19:15:57,520 INFO L78 Accepts]: Start accepts. Automaton has 93446 states and 152333 transitions. Word has length 178 [2022-07-19 19:15:57,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:15:57,521 INFO L495 AbstractCegarLoop]: Abstraction has 93446 states and 152333 transitions. [2022-07-19 19:15:57,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:15:57,521 INFO L276 IsEmpty]: Start isEmpty. Operand 93446 states and 152333 transitions. [2022-07-19 19:15:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 19:15:57,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:15:57,562 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] [2022-07-19 19:15:57,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 19:15:57,562 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:15:57,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:15:57,563 INFO L85 PathProgramCache]: Analyzing trace with hash -440160575, now seen corresponding path program 1 times [2022-07-19 19:15:57,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:15:57,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27055727] [2022-07-19 19:15:57,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:15:57,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:15:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:57,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:15:57,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:57,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 19:15:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 19:15:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:57,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 19:15:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:57,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 19:15:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:15:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:15:57,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:15:57,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27055727] [2022-07-19 19:15:57,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27055727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:15:57,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:15:57,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:15:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134321861] [2022-07-19 19:15:57,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:15:57,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:15:57,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:15:57,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:15:57,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:15:57,700 INFO L87 Difference]: Start difference. First operand 93446 states and 152333 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)