./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_label45+token_ring.09.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 b445a4f49d9151eb44c8190083d36f280681906d4dfab457d725a1f68c1551d8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:00:26,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:00:26,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:00:26,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:00:26,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:00:26,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:00:26,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:00:26,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:00:26,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:00:26,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:00:26,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:00:26,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:00:26,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:00:26,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:00:26,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:00:26,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:00:26,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:00:26,282 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:00:26,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:00:26,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:00:26,290 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:00:26,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:00:26,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:00:26,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:00:26,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:00:26,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:00:26,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:00:26,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:00:26,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:00:26,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:00:26,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:00:26,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:00:26,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:00:26,304 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:00:26,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:00:26,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:00:26,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:00:26,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:00:26,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:00:26,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:00:26,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:00:26,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:00:26,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:00:26,342 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:00:26,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:00:26,344 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:00:26,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:00:26,345 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:00:26,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:00:26,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:00:26,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:00:26,346 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:00:26,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:00:26,346 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:00:26,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:00:26,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:00:26,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:00:26,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:00:26,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:00:26,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:00:26,347 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:00:26,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:00:26,348 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:00:26,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:00:26,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:00:26,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:00:26,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:00:26,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:00:26,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:00:26,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:00:26,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:00:26,354 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:00:26,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:00:26,354 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:00:26,354 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:00:26,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:00:26,355 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b445a4f49d9151eb44c8190083d36f280681906d4dfab457d725a1f68c1551d8 [2022-07-13 20:00:26,526 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:00:26,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:00:26,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:00:26,555 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:00:26,555 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:00:26,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c [2022-07-13 20:00:26,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9ab166a/3ce2ffe484e541d19b70314e43ea3db5/FLAG1ab485cb0 [2022-07-13 20:00:27,270 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:00:27,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label45+token_ring.09.cil-2.c [2022-07-13 20:00:27,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9ab166a/3ce2ffe484e541d19b70314e43ea3db5/FLAG1ab485cb0 [2022-07-13 20:00:27,360 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d9ab166a/3ce2ffe484e541d19b70314e43ea3db5 [2022-07-13 20:00:27,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:00:27,363 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:00:27,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:00:27,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:00:27,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:00:27,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:00:27" (1/1) ... [2022-07-13 20:00:27,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6cd167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:27, skipping insertion in model container [2022-07-13 20:00:27,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:00:27" (1/1) ... [2022-07-13 20:00:27,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:00:27,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:00:28,731 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_label45+token_ring.09.cil-2.c[380323,380336] [2022-07-13 20:00:28,753 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_label45+token_ring.09.cil-2.c[383339,383352] [2022-07-13 20:00:28,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:00:28,951 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:00:29,580 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_label45+token_ring.09.cil-2.c[380323,380336] [2022-07-13 20:00:29,585 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_label45+token_ring.09.cil-2.c[383339,383352] [2022-07-13 20:00:29,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:00:29,657 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:00:29,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29 WrapperNode [2022-07-13 20:00:29,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:00:29,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:00:29,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:00:29,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:00:29,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29" (1/1) ... [2022-07-13 20:00:29,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29" (1/1) ... [2022-07-13 20:00:30,095 INFO L137 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2022-07-13 20:00:30,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:00:30,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:00:30,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:00:30,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:00:30,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29" (1/1) ... [2022-07-13 20:00:30,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29" (1/1) ... [2022-07-13 20:00:30,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29" (1/1) ... [2022-07-13 20:00:30,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29" (1/1) ... [2022-07-13 20:00:30,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29" (1/1) ... [2022-07-13 20:00:30,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29" (1/1) ... [2022-07-13 20:00:30,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29" (1/1) ... [2022-07-13 20:00:30,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:00:30,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:00:30,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:00:30,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:00:30,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29" (1/1) ... [2022-07-13 20:00:30,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:00:30,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:00:30,500 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) [2022-07-13 20:00:30,507 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 [2022-07-13 20:00:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:00:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 20:00:30,548 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 20:00:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 20:00:30,548 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 20:00:30,549 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 20:00:30,549 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 20:00:30,549 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 20:00:30,549 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 20:00:30,549 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 20:00:30,549 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 20:00:30,549 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 20:00:30,550 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 20:00:30,550 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 20:00:30,550 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 20:00:30,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:00:30,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:00:30,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:00:30,662 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:00:30,664 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:00:35,109 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:00:35,133 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:00:35,134 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-13 20:00:35,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:00:35 BoogieIcfgContainer [2022-07-13 20:00:35,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:00:35,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:00:35,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:00:35,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:00:35,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:00:27" (1/3) ... [2022-07-13 20:00:35,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634710a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:00:35, skipping insertion in model container [2022-07-13 20:00:35,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:00:29" (2/3) ... [2022-07-13 20:00:35,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634710a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:00:35, skipping insertion in model container [2022-07-13 20:00:35,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:00:35" (3/3) ... [2022-07-13 20:00:35,147 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.09.cil-2.c [2022-07-13 20:00:35,156 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:00:35,157 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:00:35,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:00:35,232 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@4a1b1719, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fd3ee01 [2022-07-13 20:00:35,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:00:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 20:00:35,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:00:35,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:35,272 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] [2022-07-13 20:00:35,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:35,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:35,277 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2022-07-13 20:00:35,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:35,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219519942] [2022-07-13 20:00:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:35,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:35,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:35,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:00:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:35,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:00:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:35,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:00:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:35,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:00:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:35,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:35,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:35,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219519942] [2022-07-13 20:00:35,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219519942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:35,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:35,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:00:35,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166840301] [2022-07-13 20:00:35,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:35,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:00:35,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:00:35,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:00:35,657 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:37,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:37,002 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2022-07-13 20:00:37,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:00:37,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:00:37,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:37,048 INFO L225 Difference]: With dead ends: 5096 [2022-07-13 20:00:37,048 INFO L226 Difference]: Without dead ends: 2539 [2022-07-13 20:00:37,055 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 [2022-07-13 20:00:37,065 INFO L413 NwaCegarLoop]: 4557 mSDtfsCounter, 821 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 16962 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:37,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 16962 Invalid, 622 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 20:00:37,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2022-07-13 20:00:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2022-07-13 20:00:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-13 20:00:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2022-07-13 20:00:37,171 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2022-07-13 20:00:37,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:37,172 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2022-07-13 20:00:37,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2022-07-13 20:00:37,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:00:37,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:37,174 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] [2022-07-13 20:00:37,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:00:37,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:37,175 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2022-07-13 20:00:37,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:37,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512925095] [2022-07-13 20:00:37,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:37,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:37,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:37,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:00:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:00:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:00:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:37,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:00:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:37,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:37,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:37,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512925095] [2022-07-13 20:00:37,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512925095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:37,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:37,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 20:00:37,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700533223] [2022-07-13 20:00:37,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:37,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:00:37,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:00:37,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:00:37,367 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:39,215 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2022-07-13 20:00:39,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:00:39,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:00:39,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:39,227 INFO L225 Difference]: With dead ends: 3244 [2022-07-13 20:00:39,227 INFO L226 Difference]: Without dead ends: 2952 [2022-07-13 20:00:39,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 20:00:39,231 INFO L413 NwaCegarLoop]: 4528 mSDtfsCounter, 5181 mSDsluCounter, 12667 mSDsCounter, 0 mSdLazyCounter, 1581 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5197 SdHoareTripleChecker+Valid, 17195 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:39,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5197 Valid, 17195 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1581 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 20:00:39,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-07-13 20:00:39,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2022-07-13 20:00:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-13 20:00:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2022-07-13 20:00:39,311 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2022-07-13 20:00:39,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:39,312 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2022-07-13 20:00:39,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:39,313 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2022-07-13 20:00:39,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:00:39,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:39,315 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] [2022-07-13 20:00:39,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:00:39,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:39,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:39,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2022-07-13 20:00:39,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:39,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914376725] [2022-07-13 20:00:39,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:39,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:39,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:00:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:00:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:39,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:00:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:39,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:00:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:39,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:39,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914376725] [2022-07-13 20:00:39,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914376725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:39,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:39,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:00:39,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754813027] [2022-07-13 20:00:39,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:39,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:00:39,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:39,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:00:39,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:00:39,476 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:41,726 INFO L93 Difference]: Finished difference Result 3972 states and 6919 transitions. [2022-07-13 20:00:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:00:41,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:00:41,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:41,753 INFO L225 Difference]: With dead ends: 3972 [2022-07-13 20:00:41,753 INFO L226 Difference]: Without dead ends: 3377 [2022-07-13 20:00:41,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:00:41,758 INFO L413 NwaCegarLoop]: 4773 mSDtfsCounter, 5201 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 22176 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:41,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 22176 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 20:00:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2022-07-13 20:00:41,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3015. [2022-07-13 20:00:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2932 states have (on average 1.7861527967257844) internal successors, (5237), 2937 states have internal predecessors, (5237), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-13 20:00:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5362 transitions. [2022-07-13 20:00:41,844 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5362 transitions. Word has length 146 [2022-07-13 20:00:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:41,845 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 5362 transitions. [2022-07-13 20:00:41,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5362 transitions. [2022-07-13 20:00:41,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:00:41,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:41,847 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] [2022-07-13 20:00:41,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:00:41,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:41,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:41,848 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2022-07-13 20:00:41,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:41,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413497146] [2022-07-13 20:00:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:41,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:00:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:41,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:00:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:41,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:00:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:41,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:00:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:41,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:41,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:41,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413497146] [2022-07-13 20:00:41,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413497146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:41,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:41,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:00:41,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443295281] [2022-07-13 20:00:41,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:41,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:00:41,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:41,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:00:41,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:00:41,967 INFO L87 Difference]: Start difference. First operand 3015 states and 5362 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:44,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:44,214 INFO L93 Difference]: Finished difference Result 5044 states and 8626 transitions. [2022-07-13 20:00:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:00:44,220 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:00:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:44,241 INFO L225 Difference]: With dead ends: 5044 [2022-07-13 20:00:44,244 INFO L226 Difference]: Without dead ends: 4167 [2022-07-13 20:00:44,248 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 [2022-07-13 20:00:44,256 INFO L413 NwaCegarLoop]: 4761 mSDtfsCounter, 5195 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5211 SdHoareTripleChecker+Valid, 22164 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:44,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5211 Valid, 22164 Invalid, 2528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 20:00:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2022-07-13 20:00:44,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3583. [2022-07-13 20:00:44,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3450 states have (on average 1.752463768115942) internal successors, (6046), 3457 states have internal predecessors, (6046), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-13 20:00:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 6251 transitions. [2022-07-13 20:00:44,388 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 6251 transitions. Word has length 146 [2022-07-13 20:00:44,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:44,392 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 6251 transitions. [2022-07-13 20:00:44,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:44,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 6251 transitions. [2022-07-13 20:00:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:00:44,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:44,395 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] [2022-07-13 20:00:44,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:00:44,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:44,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:44,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2022-07-13 20:00:44,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:44,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790460603] [2022-07-13 20:00:44,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:44,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:44,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:44,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:00:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:00:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:00:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:00:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:44,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:44,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790460603] [2022-07-13 20:00:44,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790460603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:44,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:44,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:00:44,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156141567] [2022-07-13 20:00:44,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:44,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:00:44,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:44,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:00:44,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:00:44,511 INFO L87 Difference]: Start difference. First operand 3583 states and 6251 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:46,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:46,596 INFO L93 Difference]: Finished difference Result 7114 states and 11903 transitions. [2022-07-13 20:00:46,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:00:46,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:00:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:46,616 INFO L225 Difference]: With dead ends: 7114 [2022-07-13 20:00:46,616 INFO L226 Difference]: Without dead ends: 5669 [2022-07-13 20:00:46,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:00:46,625 INFO L413 NwaCegarLoop]: 4756 mSDtfsCounter, 5194 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5210 SdHoareTripleChecker+Valid, 22159 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:46,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5210 Valid, 22159 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 20:00:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2022-07-13 20:00:46,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4720. [2022-07-13 20:00:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4487 states have (on average 1.70804546467573) internal successors, (7664), 4498 states have internal predecessors, (7664), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-13 20:00:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 8035 transitions. [2022-07-13 20:00:46,852 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 8035 transitions. Word has length 146 [2022-07-13 20:00:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:46,852 INFO L495 AbstractCegarLoop]: Abstraction has 4720 states and 8035 transitions. [2022-07-13 20:00:46,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:46,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 8035 transitions. [2022-07-13 20:00:46,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:00:46,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:46,854 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] [2022-07-13 20:00:46,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:00:46,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:46,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:46,855 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2022-07-13 20:00:46,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:46,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872416480] [2022-07-13 20:00:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:46,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:46,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:46,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:00:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:46,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:00:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:00:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:46,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:00:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:46,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:46,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872416480] [2022-07-13 20:00:46,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872416480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:46,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:46,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:00:46,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436711163] [2022-07-13 20:00:46,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:46,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:00:46,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:46,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:00:46,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:00:46,957 INFO L87 Difference]: Start difference. First operand 4720 states and 8035 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:49,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:49,251 INFO L93 Difference]: Finished difference Result 11253 states and 18473 transitions. [2022-07-13 20:00:49,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:00:49,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:00:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:49,296 INFO L225 Difference]: With dead ends: 11253 [2022-07-13 20:00:49,297 INFO L226 Difference]: Without dead ends: 8671 [2022-07-13 20:00:49,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:00:49,309 INFO L413 NwaCegarLoop]: 4751 mSDtfsCounter, 5193 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 22154 SdHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:49,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5209 Valid, 22154 Invalid, 2512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 20:00:49,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2022-07-13 20:00:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7001. [2022-07-13 20:00:49,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6568 states have (on average 1.6610840438489647) internal successors, (10910), 6587 states have internal predecessors, (10910), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-13 20:00:49,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11631 transitions. [2022-07-13 20:00:49,661 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11631 transitions. Word has length 146 [2022-07-13 20:00:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:49,662 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11631 transitions. [2022-07-13 20:00:49,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11631 transitions. [2022-07-13 20:00:49,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:00:49,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:49,666 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] [2022-07-13 20:00:49,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:00:49,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:49,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2022-07-13 20:00:49,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:49,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667078826] [2022-07-13 20:00:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:49,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:00:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:49,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:00:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:49,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:00:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:49,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:00:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:49,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:49,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667078826] [2022-07-13 20:00:49,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667078826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:49,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:49,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:00:49,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812178178] [2022-07-13 20:00:49,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:49,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:00:49,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:00:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:00:49,774 INFO L87 Difference]: Start difference. First operand 7001 states and 11631 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:52,302 INFO L93 Difference]: Finished difference Result 19532 states and 31675 transitions. [2022-07-13 20:00:52,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:00:52,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:00:52,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:52,344 INFO L225 Difference]: With dead ends: 19532 [2022-07-13 20:00:52,344 INFO L226 Difference]: Without dead ends: 14669 [2022-07-13 20:00:52,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:00:52,362 INFO L413 NwaCegarLoop]: 4547 mSDtfsCounter, 5272 mSDsluCounter, 16867 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 21414 SdHoareTripleChecker+Invalid, 2275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:52,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5288 Valid, 21414 Invalid, 2275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-13 20:00:52,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-07-13 20:00:52,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11578. [2022-07-13 20:00:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.621591437878083) internal successors, (17424), 10780 states have internal predecessors, (17424), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-13 20:00:52,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18899 transitions. [2022-07-13 20:00:52,903 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18899 transitions. Word has length 146 [2022-07-13 20:00:52,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:52,904 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18899 transitions. [2022-07-13 20:00:52,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:52,904 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18899 transitions. [2022-07-13 20:00:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:00:52,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:52,911 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] [2022-07-13 20:00:52,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:00:52,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:52,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:52,914 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2022-07-13 20:00:52,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:52,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676547680] [2022-07-13 20:00:52,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:52,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:52,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:00:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:53,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:00:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:53,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:00:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:53,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:00:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:53,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:53,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676547680] [2022-07-13 20:00:53,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676547680] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:53,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:53,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:00:53,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078953178] [2022-07-13 20:00:53,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:53,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:00:53,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:53,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:00:53,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:00:53,039 INFO L87 Difference]: Start difference. First operand 11578 states and 18899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:54,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:54,589 INFO L93 Difference]: Finished difference Result 24276 states and 39482 transitions. [2022-07-13 20:00:54,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:00:54,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:00:54,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:54,632 INFO L225 Difference]: With dead ends: 24276 [2022-07-13 20:00:54,632 INFO L226 Difference]: Without dead ends: 14836 [2022-07-13 20:00:54,662 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 [2022-07-13 20:00:54,663 INFO L413 NwaCegarLoop]: 4458 mSDtfsCounter, 4979 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 16943 SdHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:54,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4996 Valid, 16943 Invalid, 1129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 20:00:54,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2022-07-13 20:00:55,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 11578. [2022-07-13 20:00:55,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6185202419730107) internal successors, (17391), 10780 states have internal predecessors, (17391), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-13 20:00:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18866 transitions. [2022-07-13 20:00:55,192 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18866 transitions. Word has length 146 [2022-07-13 20:00:55,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:55,193 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18866 transitions. [2022-07-13 20:00:55,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:55,193 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18866 transitions. [2022-07-13 20:00:55,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:00:55,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:55,199 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] [2022-07-13 20:00:55,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:00:55,199 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:55,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:55,200 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2022-07-13 20:00:55,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:55,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659584584] [2022-07-13 20:00:55,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:55,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:55,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:00:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:55,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:00:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:00:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:55,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:00:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:55,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659584584] [2022-07-13 20:00:55,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659584584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:55,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:55,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:00:55,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546037246] [2022-07-13 20:00:55,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:55,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:00:55,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:55,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:00:55,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:00:55,289 INFO L87 Difference]: Start difference. First operand 11578 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:58,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:00:58,532 INFO L93 Difference]: Finished difference Result 36057 states and 58041 transitions. [2022-07-13 20:00:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:00:58,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:00:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:00:58,612 INFO L225 Difference]: With dead ends: 36057 [2022-07-13 20:00:58,612 INFO L226 Difference]: Without dead ends: 26617 [2022-07-13 20:00:58,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 20:00:58,645 INFO L413 NwaCegarLoop]: 4735 mSDtfsCounter, 5184 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5200 SdHoareTripleChecker+Valid, 22138 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 20:00:58,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5200 Valid, 22138 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 20:00:58,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26617 states. [2022-07-13 20:00:59,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26617 to 20796. [2022-07-13 20:00:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20796 states, 19163 states have (on average 1.5898867609455722) internal successors, (30467), 19230 states have internal predecessors, (30467), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-13 20:00:59,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20796 states to 20796 states and 33612 transitions. [2022-07-13 20:00:59,783 INFO L78 Accepts]: Start accepts. Automaton has 20796 states and 33612 transitions. Word has length 146 [2022-07-13 20:00:59,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:00:59,783 INFO L495 AbstractCegarLoop]: Abstraction has 20796 states and 33612 transitions. [2022-07-13 20:00:59,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:00:59,784 INFO L276 IsEmpty]: Start isEmpty. Operand 20796 states and 33612 transitions. [2022-07-13 20:00:59,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:00:59,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:00:59,797 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] [2022-07-13 20:00:59,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:00:59,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:00:59,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:00:59,798 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2022-07-13 20:00:59,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:00:59,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187470361] [2022-07-13 20:00:59,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:00:59,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:00:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:59,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:00:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:59,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:00:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:00:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:00:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:00:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:00:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:00:59,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:00:59,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187470361] [2022-07-13 20:00:59,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187470361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:00:59,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:00:59,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:00:59,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559729716] [2022-07-13 20:00:59,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:00:59,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:00:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:00:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:00:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:00:59,915 INFO L87 Difference]: Start difference. First operand 20796 states and 33612 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:04,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:01:04,660 INFO L93 Difference]: Finished difference Result 69177 states and 111649 transitions. [2022-07-13 20:01:04,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 20:01:04,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:01:04,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:01:04,816 INFO L225 Difference]: With dead ends: 69177 [2022-07-13 20:01:04,817 INFO L226 Difference]: Without dead ends: 50519 [2022-07-13 20:01:04,865 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 [2022-07-13 20:01:04,865 INFO L413 NwaCegarLoop]: 4728 mSDtfsCounter, 5186 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 22131 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 20:01:04,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5202 Valid, 22131 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 20:01:04,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50519 states. [2022-07-13 20:01:06,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50519 to 39293. [2022-07-13 20:01:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39293 states, 36060 states have (on average 1.5726289517470882) internal successors, (56709), 36191 states have internal predecessors, (56709), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-13 20:01:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39293 states to 39293 states and 63680 transitions. [2022-07-13 20:01:06,904 INFO L78 Accepts]: Start accepts. Automaton has 39293 states and 63680 transitions. Word has length 146 [2022-07-13 20:01:06,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:01:06,904 INFO L495 AbstractCegarLoop]: Abstraction has 39293 states and 63680 transitions. [2022-07-13 20:01:06,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 39293 states and 63680 transitions. [2022-07-13 20:01:06,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:01:06,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:01:06,923 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] [2022-07-13 20:01:06,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:01:06,925 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:01:06,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:01:06,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2022-07-13 20:01:06,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:01:06,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166513355] [2022-07-13 20:01:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:01:06,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:01:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:01:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:06,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:01:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:01:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:01:07,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:01:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:07,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:01:07,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:01:07,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166513355] [2022-07-13 20:01:07,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166513355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:01:07,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:01:07,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:01:07,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39109903] [2022-07-13 20:01:07,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:01:07,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:01:07,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:01:07,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:01:07,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:01:07,029 INFO L87 Difference]: Start difference. First operand 39293 states and 63680 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:17,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:01:17,686 INFO L93 Difference]: Finished difference Result 151030 states and 244645 transitions. [2022-07-13 20:01:17,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:01:17,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:01:17,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:01:18,138 INFO L225 Difference]: With dead ends: 151030 [2022-07-13 20:01:18,138 INFO L226 Difference]: Without dead ends: 113875 [2022-07-13 20:01:18,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:01:18,220 INFO L413 NwaCegarLoop]: 4856 mSDtfsCounter, 5263 mSDsluCounter, 17392 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5278 SdHoareTripleChecker+Valid, 22248 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:01:18,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5278 Valid, 22248 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 20:01:18,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113875 states. [2022-07-13 20:01:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113875 to 74879. [2022-07-13 20:01:22,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74879 states, 68574 states have (on average 1.5615393589407065) internal successors, (107081), 68833 states have internal predecessors, (107081), 4505 states have call successors, (4505), 1543 states have call predecessors, (4505), 1798 states have return successors, (11320), 4758 states have call predecessors, (11320), 4503 states have call successors, (11320) [2022-07-13 20:01:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74879 states to 74879 states and 122906 transitions. [2022-07-13 20:01:22,997 INFO L78 Accepts]: Start accepts. Automaton has 74879 states and 122906 transitions. Word has length 146 [2022-07-13 20:01:22,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:01:22,997 INFO L495 AbstractCegarLoop]: Abstraction has 74879 states and 122906 transitions. [2022-07-13 20:01:22,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 74879 states and 122906 transitions. [2022-07-13 20:01:23,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:01:23,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:01:23,036 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] [2022-07-13 20:01:23,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:01:23,036 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:01:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:01:23,037 INFO L85 PathProgramCache]: Analyzing trace with hash 388633404, now seen corresponding path program 1 times [2022-07-13 20:01:23,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:01:23,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099395441] [2022-07-13 20:01:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:01:23,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:01:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:01:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:23,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:01:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:23,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:01:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:23,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:01:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:23,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:01:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:01:23,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:01:23,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099395441] [2022-07-13 20:01:23,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099395441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:01:23,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:01:23,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:01:23,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691089532] [2022-07-13 20:01:23,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:01:23,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:01:23,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:01:23,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:01:23,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:01:23,322 INFO L87 Difference]: Start difference. First operand 74879 states and 122906 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:01:43,304 INFO L93 Difference]: Finished difference Result 290934 states and 478781 transitions. [2022-07-13 20:01:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 20:01:43,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 146 [2022-07-13 20:01:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:01:44,276 INFO L225 Difference]: With dead ends: 290934 [2022-07-13 20:01:44,276 INFO L226 Difference]: Without dead ends: 218193 [2022-07-13 20:01:44,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 20:01:44,468 INFO L413 NwaCegarLoop]: 4712 mSDtfsCounter, 5471 mSDsluCounter, 17395 mSDsCounter, 0 mSdLazyCounter, 2353 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5497 SdHoareTripleChecker+Valid, 22107 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:01:44,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5497 Valid, 22107 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2353 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 20:01:44,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218193 states. [2022-07-13 20:01:54,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218193 to 147200. [2022-07-13 20:01:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147200 states, 134879 states have (on average 1.558811972212131) internal successors, (210251), 135394 states have internal predecessors, (210251), 8729 states have call successors, (8729), 3079 states have call predecessors, (8729), 3590 states have return successors, (28922), 9238 states have call predecessors, (28922), 8727 states have call successors, (28922) [2022-07-13 20:01:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147200 states to 147200 states and 247902 transitions. [2022-07-13 20:01:54,839 INFO L78 Accepts]: Start accepts. Automaton has 147200 states and 247902 transitions. Word has length 146 [2022-07-13 20:01:54,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:01:54,840 INFO L495 AbstractCegarLoop]: Abstraction has 147200 states and 247902 transitions. [2022-07-13 20:01:54,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 20:01:54,840 INFO L276 IsEmpty]: Start isEmpty. Operand 147200 states and 247902 transitions. [2022-07-13 20:01:54,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-13 20:01:54,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:01:54,905 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] [2022-07-13 20:01:54,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 20:01:54,906 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:01:54,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:01:54,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1904447622, now seen corresponding path program 1 times [2022-07-13 20:01:54,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:01:54,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287536992] [2022-07-13 20:01:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:01:54,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:01:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:54,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 20:01:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 20:01:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:54,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 20:01:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:54,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 20:01:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:55,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 20:01:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:01:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:01:55,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:01:55,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287536992] [2022-07-13 20:01:55,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287536992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:01:55,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:01:55,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 20:01:55,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760610661] [2022-07-13 20:01:55,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:01:55,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 20:01:55,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:01:55,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 20:01:55,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:01:55,017 INFO L87 Difference]: Start difference. First operand 147200 states and 247902 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)