./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.10.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/transmitter.10.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:55:26,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:55:26,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:55:26,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:55:26,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:55:26,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:55:26,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:55:26,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:55:26,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:55:26,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:55:26,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:55:26,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:55:26,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:55:26,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:55:26,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:55:26,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:55:26,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:55:26,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:55:26,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:55:26,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:55:26,266 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:55:26,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:55:26,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:55:26,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:55:26,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:55:26,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:55:26,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:55:26,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:55:26,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:55:26,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:55:26,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:55:26,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:55:26,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:55:26,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:55:26,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:55:26,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:55:26,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:55:26,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:55:26,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:55:26,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:55:26,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:55:26,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:55:26,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:55:26,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:55:26,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:55:26,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:55:26,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:55:26,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:55:26,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:55:26,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:55:26,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:55:26,317 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:55:26,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:55:26,318 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:55:26,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:55:26,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:55:26,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:55:26,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:55:26,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:55:26,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:55:26,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:55:26,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:55:26,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:55:26,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:55:26,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:55:26,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:55:26,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:55:26,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:55:26,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:55:26,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:55:26,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:55:26,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:55:26,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:55:26,322 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:55:26,323 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:55:26,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:55:26,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c68befe0cb772d649d152823cc17c89d77797d55cc04257d4beaaad2b518a7a0 [2022-07-22 17:55:26,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:55:26,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:55:26,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:55:26,581 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:55:26,582 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:55:26,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-07-22 17:55:26,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408aaffc8/3945e60d049d4feba074aa07fd3ccfef/FLAG0ab03437c [2022-07-22 17:55:27,044 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:55:27,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.10.cil.c [2022-07-22 17:55:27,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408aaffc8/3945e60d049d4feba074aa07fd3ccfef/FLAG0ab03437c [2022-07-22 17:55:27,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/408aaffc8/3945e60d049d4feba074aa07fd3ccfef [2022-07-22 17:55:27,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:55:27,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:55:27,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:55:27,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:55:27,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:55:27,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c44824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27, skipping insertion in model container [2022-07-22 17:55:27,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:55:27,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:55:27,623 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/systemc/transmitter.10.cil.c[706,719] [2022-07-22 17:55:27,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:55:27,749 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:55:27,760 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/systemc/transmitter.10.cil.c[706,719] [2022-07-22 17:55:27,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:55:27,823 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:55:27,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27 WrapperNode [2022-07-22 17:55:27,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:55:27,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:55:27,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:55:27,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:55:27,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,886 INFO L137 Inliner]: procedures = 48, calls = 60, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 720 [2022-07-22 17:55:27,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:55:27,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:55:27,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:55:27,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:55:27,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:55:27,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:55:27,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:55:27,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:55:27,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27" (1/1) ... [2022-07-22 17:55:27,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:55:27,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:55:27,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 17:55:27,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 17:55:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:55:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 17:55:28,021 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 17:55:28,021 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 17:55:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 17:55:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 17:55:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 17:55:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 17:55:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 17:55:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 17:55:28,022 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 17:55:28,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:55:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 17:55:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 17:55:28,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:55:28,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:55:28,113 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:55:28,115 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:55:28,685 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:55:28,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:55:28,694 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-07-22 17:55:28,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:55:28 BoogieIcfgContainer [2022-07-22 17:55:28,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:55:28,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:55:28,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:55:28,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:55:28,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:55:27" (1/3) ... [2022-07-22 17:55:28,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3081374a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:55:28, skipping insertion in model container [2022-07-22 17:55:28,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:55:27" (2/3) ... [2022-07-22 17:55:28,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3081374a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:55:28, skipping insertion in model container [2022-07-22 17:55:28,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:55:28" (3/3) ... [2022-07-22 17:55:28,706 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.10.cil.c [2022-07-22 17:55:28,769 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:55:28,769 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:55:28,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:55:28,840 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@49f34f4c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@59dc4285 [2022-07-22 17:55:28,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:55:28,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 328 states, 297 states have (on average 1.6565656565656566) internal successors, (492), 299 states have internal predecessors, (492), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-22 17:55:28,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:55:28,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:28,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:28,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:28,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:28,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1953724887, now seen corresponding path program 1 times [2022-07-22 17:55:28,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:28,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170523775] [2022-07-22 17:55:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:28,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:55:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:29,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:55:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:55:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:29,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:55:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:29,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:29,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:29,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170523775] [2022-07-22 17:55:29,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170523775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:29,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:29,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:55:29,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001660238] [2022-07-22 17:55:29,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:29,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:55:29,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:29,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:55:29,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:55:29,390 INFO L87 Difference]: Start difference. First operand has 328 states, 297 states have (on average 1.6565656565656566) internal successors, (492), 299 states have internal predecessors, (492), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:30,736 INFO L93 Difference]: Finished difference Result 765 states and 1265 transitions. [2022-07-22 17:55:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:55:30,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:55:30,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:30,752 INFO L225 Difference]: With dead ends: 765 [2022-07-22 17:55:30,753 INFO L226 Difference]: Without dead ends: 441 [2022-07-22 17:55:30,757 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 [2022-07-22 17:55:30,760 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 868 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:30,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 901 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:55:30,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-22 17:55:30,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 323. [2022-07-22 17:55:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 293 states have (on average 1.5597269624573378) internal successors, (457), 294 states have internal predecessors, (457), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-22 17:55:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 503 transitions. [2022-07-22 17:55:30,858 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 503 transitions. Word has length 163 [2022-07-22 17:55:30,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:30,859 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 503 transitions. [2022-07-22 17:55:30,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 503 transitions. [2022-07-22 17:55:30,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:55:30,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:30,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:30,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 17:55:30,864 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:30,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:30,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1342455829, now seen corresponding path program 1 times [2022-07-22 17:55:30,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:30,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944896261] [2022-07-22 17:55:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:30,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:30,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:30,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:55:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:30,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:55:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:31,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:55:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:31,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:55:31,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:31,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:31,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944896261] [2022-07-22 17:55:31,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944896261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:31,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:31,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 17:55:31,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612637275] [2022-07-22 17:55:31,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:31,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:55:31,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:31,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:55:31,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 17:55:31,060 INFO L87 Difference]: Start difference. First operand 323 states and 503 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:32,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:32,149 INFO L93 Difference]: Finished difference Result 748 states and 1181 transitions. [2022-07-22 17:55:32,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 17:55:32,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:55:32,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:32,159 INFO L225 Difference]: With dead ends: 748 [2022-07-22 17:55:32,160 INFO L226 Difference]: Without dead ends: 441 [2022-07-22 17:55:32,166 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 [2022-07-22 17:55:32,168 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 855 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:32,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 887 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:55:32,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-07-22 17:55:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 323. [2022-07-22 17:55:32,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 293 states have (on average 1.5563139931740615) internal successors, (456), 294 states have internal predecessors, (456), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-22 17:55:32,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 502 transitions. [2022-07-22 17:55:32,212 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 502 transitions. Word has length 163 [2022-07-22 17:55:32,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:32,214 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 502 transitions. [2022-07-22 17:55:32,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 3 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:32,214 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 502 transitions. [2022-07-22 17:55:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:55:32,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:32,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:32,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 17:55:32,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:32,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:32,222 INFO L85 PathProgramCache]: Analyzing trace with hash -19276883, now seen corresponding path program 1 times [2022-07-22 17:55:32,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:32,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454722606] [2022-07-22 17:55:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:32,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:55:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:55:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:55:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:55:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:32,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:32,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454722606] [2022-07-22 17:55:32,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454722606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:32,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:32,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:55:32,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099488779] [2022-07-22 17:55:32,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:32,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:55:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:55:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:55:32,443 INFO L87 Difference]: Start difference. First operand 323 states and 502 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:34,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:34,692 INFO L93 Difference]: Finished difference Result 1182 states and 1892 transitions. [2022-07-22 17:55:34,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:55:34,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:55:34,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:34,697 INFO L225 Difference]: With dead ends: 1182 [2022-07-22 17:55:34,698 INFO L226 Difference]: Without dead ends: 877 [2022-07-22 17:55:34,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:55:34,700 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 1296 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:34,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 1402 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 17:55:34,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-07-22 17:55:34,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 641. [2022-07-22 17:55:34,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 586 states have (on average 1.568259385665529) internal successors, (919), 588 states have internal predecessors, (919), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-07-22 17:55:34,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1004 transitions. [2022-07-22 17:55:34,744 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1004 transitions. Word has length 163 [2022-07-22 17:55:34,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:34,745 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1004 transitions. [2022-07-22 17:55:34,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 4 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:34,745 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1004 transitions. [2022-07-22 17:55:34,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:55:34,747 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:34,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:34,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 17:55:34,748 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:34,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:34,749 INFO L85 PathProgramCache]: Analyzing trace with hash -951057460, now seen corresponding path program 1 times [2022-07-22 17:55:34,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:34,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006161449] [2022-07-22 17:55:34,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:34,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:34,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:55:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:34,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:55:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:55:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:55:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:34,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:34,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006161449] [2022-07-22 17:55:34,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006161449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:34,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:34,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:34,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76051463] [2022-07-22 17:55:34,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:34,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:34,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:34,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:34,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:34,898 INFO L87 Difference]: Start difference. First operand 641 states and 1004 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:38,258 INFO L93 Difference]: Finished difference Result 2101 states and 3335 transitions. [2022-07-22 17:55:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:55:38,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:55:38,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:38,280 INFO L225 Difference]: With dead ends: 2101 [2022-07-22 17:55:38,280 INFO L226 Difference]: Without dead ends: 1478 [2022-07-22 17:55:38,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:55:38,290 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 1419 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 3355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:38,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2635 Invalid, 3355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-22 17:55:38,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-07-22 17:55:38,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 937. [2022-07-22 17:55:38,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 857 states have (on average 1.561260210035006) internal successors, (1338), 860 states have internal predecessors, (1338), 59 states have call successors, (59), 18 states have call predecessors, (59), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-07-22 17:55:38,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1461 transitions. [2022-07-22 17:55:38,374 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1461 transitions. Word has length 163 [2022-07-22 17:55:38,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:38,375 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1461 transitions. [2022-07-22 17:55:38,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:38,375 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1461 transitions. [2022-07-22 17:55:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:55:38,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:38,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:38,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 17:55:38,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:38,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:38,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1491486966, now seen corresponding path program 1 times [2022-07-22 17:55:38,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:38,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576477448] [2022-07-22 17:55:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:38,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:55:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:55:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:55:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:38,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:55:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:38,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:38,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576477448] [2022-07-22 17:55:38,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576477448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:38,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:38,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:38,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305477096] [2022-07-22 17:55:38,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:38,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:38,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:38,536 INFO L87 Difference]: Start difference. First operand 937 states and 1461 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:41,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:41,809 INFO L93 Difference]: Finished difference Result 3235 states and 5126 transitions. [2022-07-22 17:55:41,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:55:41,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:55:41,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:41,821 INFO L225 Difference]: With dead ends: 3235 [2022-07-22 17:55:41,822 INFO L226 Difference]: Without dead ends: 2316 [2022-07-22 17:55:41,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:55:41,826 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 1419 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1435 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 3360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:41,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1435 Valid, 2625 Invalid, 3360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 3283 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-22 17:55:41,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-07-22 17:55:41,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 1530. [2022-07-22 17:55:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1400 states have (on average 1.555) internal successors, (2177), 1405 states have internal predecessors, (2177), 95 states have call successors, (95), 30 states have call predecessors, (95), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-07-22 17:55:41,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2380 transitions. [2022-07-22 17:55:41,933 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2380 transitions. Word has length 163 [2022-07-22 17:55:41,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:41,934 INFO L495 AbstractCegarLoop]: Abstraction has 1530 states and 2380 transitions. [2022-07-22 17:55:41,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2380 transitions. [2022-07-22 17:55:41,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:55:41,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:41,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:41,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 17:55:41,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:41,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1647467508, now seen corresponding path program 1 times [2022-07-22 17:55:41,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:41,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709399579] [2022-07-22 17:55:41,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:41,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:41,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:42,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:55:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:42,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:55:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:42,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:55:42,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:42,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:55:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:42,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:42,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709399579] [2022-07-22 17:55:42,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709399579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:42,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:42,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:42,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640416538] [2022-07-22 17:55:42,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:42,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:42,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:42,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:42,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:42,112 INFO L87 Difference]: Start difference. First operand 1530 states and 2380 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:45,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:45,369 INFO L93 Difference]: Finished difference Result 5415 states and 8549 transitions. [2022-07-22 17:55:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:55:45,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:55:45,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:45,392 INFO L225 Difference]: With dead ends: 5415 [2022-07-22 17:55:45,392 INFO L226 Difference]: Without dead ends: 3903 [2022-07-22 17:55:45,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:55:45,400 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 1414 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3263 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 2617 SdHoareTripleChecker+Invalid, 3341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:45,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 2617 Invalid, 3341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3263 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-22 17:55:45,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2022-07-22 17:55:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 2722. [2022-07-22 17:55:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2722 states, 2492 states have (on average 1.5509630818619582) internal successors, (3865), 2501 states have internal predecessors, (3865), 167 states have call successors, (167), 54 states have call predecessors, (167), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-07-22 17:55:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2722 states to 2722 states and 4234 transitions. [2022-07-22 17:55:45,604 INFO L78 Accepts]: Start accepts. Automaton has 2722 states and 4234 transitions. Word has length 163 [2022-07-22 17:55:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:45,604 INFO L495 AbstractCegarLoop]: Abstraction has 2722 states and 4234 transitions. [2022-07-22 17:55:45,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 2722 states and 4234 transitions. [2022-07-22 17:55:45,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:55:45,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:45,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:45,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:55:45,610 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash 859629966, now seen corresponding path program 1 times [2022-07-22 17:55:45,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:45,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165645034] [2022-07-22 17:55:45,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:45,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:45,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:55:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:45,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:55:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:45,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:55:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:45,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:55:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:45,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:45,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165645034] [2022-07-22 17:55:45,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165645034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:45,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:45,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:45,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652342279] [2022-07-22 17:55:45,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:45,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:45,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:45,788 INFO L87 Difference]: Start difference. First operand 2722 states and 4234 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:49,028 INFO L93 Difference]: Finished difference Result 9785 states and 15429 transitions. [2022-07-22 17:55:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:55:49,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:55:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:49,060 INFO L225 Difference]: With dead ends: 9785 [2022-07-22 17:55:49,061 INFO L226 Difference]: Without dead ends: 7081 [2022-07-22 17:55:49,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:55:49,072 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 1413 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3255 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:49,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 2612 Invalid, 3333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3255 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 17:55:49,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2022-07-22 17:55:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 5111. [2022-07-22 17:55:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 4681 states have (on average 1.5481734672078615) internal successors, (7247), 4698 states have internal predecessors, (7247), 311 states have call successors, (311), 102 states have call predecessors, (311), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-07-22 17:55:49,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 7966 transitions. [2022-07-22 17:55:49,453 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 7966 transitions. Word has length 163 [2022-07-22 17:55:49,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:49,454 INFO L495 AbstractCegarLoop]: Abstraction has 5111 states and 7966 transitions. [2022-07-22 17:55:49,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:49,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 7966 transitions. [2022-07-22 17:55:49,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:55:49,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:49,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:49,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:55:49,467 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:49,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:49,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1276253236, now seen corresponding path program 1 times [2022-07-22 17:55:49,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:49,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600902374] [2022-07-22 17:55:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:49,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:55:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:55:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:55:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:55:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:49,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:49,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600902374] [2022-07-22 17:55:49,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600902374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:49,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:49,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:49,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629624473] [2022-07-22 17:55:49,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:49,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:49,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:49,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:49,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:49,594 INFO L87 Difference]: Start difference. First operand 5111 states and 7966 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:53,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:53,042 INFO L93 Difference]: Finished difference Result 18524 states and 29247 transitions. [2022-07-22 17:55:53,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:55:53,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:55:53,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:53,101 INFO L225 Difference]: With dead ends: 18524 [2022-07-22 17:55:53,101 INFO L226 Difference]: Without dead ends: 13431 [2022-07-22 17:55:53,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:55:53,120 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 1412 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3247 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 2607 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:53,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 2607 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3247 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 17:55:53,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13431 states. [2022-07-22 17:55:53,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13431 to 9904. [2022-07-22 17:55:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9904 states, 9074 states have (on average 1.5465065020938946) internal successors, (14033), 9107 states have internal predecessors, (14033), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-22 17:55:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9904 states to 9904 states and 15506 transitions. [2022-07-22 17:55:53,876 INFO L78 Accepts]: Start accepts. Automaton has 9904 states and 15506 transitions. Word has length 163 [2022-07-22 17:55:53,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:53,877 INFO L495 AbstractCegarLoop]: Abstraction has 9904 states and 15506 transitions. [2022-07-22 17:55:53,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand 9904 states and 15506 transitions. [2022-07-22 17:55:53,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:55:53,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:53,893 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:53,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:55:53,894 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:53,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:53,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1206605362, now seen corresponding path program 1 times [2022-07-22 17:55:53,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:53,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509478857] [2022-07-22 17:55:53,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:53,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:53,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:53,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:55:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:54,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:55:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:55:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:54,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:55:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:54,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:54,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:54,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509478857] [2022-07-22 17:55:54,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509478857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:54,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:54,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:54,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979391792] [2022-07-22 17:55:54,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:54,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:54,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:54,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:54,024 INFO L87 Difference]: Start difference. First operand 9904 states and 15506 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:55:56,017 INFO L93 Difference]: Finished difference Result 23348 states and 37121 transitions. [2022-07-22 17:55:56,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:55:56,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:55:56,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:55:56,078 INFO L225 Difference]: With dead ends: 23348 [2022-07-22 17:55:56,078 INFO L226 Difference]: Without dead ends: 13462 [2022-07-22 17:55:56,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:55:56,118 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1082 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:55:56,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1149 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:55:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13462 states. [2022-07-22 17:55:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13462 to 9904. [2022-07-22 17:55:56,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9904 states, 9074 states have (on average 1.5428697377121445) internal successors, (14000), 9107 states have internal predecessors, (14000), 599 states have call successors, (599), 198 states have call predecessors, (599), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-07-22 17:55:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9904 states to 9904 states and 15473 transitions. [2022-07-22 17:55:56,851 INFO L78 Accepts]: Start accepts. Automaton has 9904 states and 15473 transitions. Word has length 163 [2022-07-22 17:55:56,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:55:56,851 INFO L495 AbstractCegarLoop]: Abstraction has 9904 states and 15473 transitions. [2022-07-22 17:55:56,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:55:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand 9904 states and 15473 transitions. [2022-07-22 17:55:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:55:56,866 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:55:56,866 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:55:56,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:55:56,867 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:55:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:55:56,867 INFO L85 PathProgramCache]: Analyzing trace with hash -788716660, now seen corresponding path program 1 times [2022-07-22 17:55:56,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:55:56,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725383252] [2022-07-22 17:55:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:55:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:55:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:55:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:55:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:55:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:55:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:55:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:55:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:55:56,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:55:56,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725383252] [2022-07-22 17:55:56,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725383252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:55:56,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:55:56,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:55:56,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70052359] [2022-07-22 17:55:56,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:55:56,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:55:56,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:55:56,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:55:56,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:55:56,994 INFO L87 Difference]: Start difference. First operand 9904 states and 15473 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:01,481 INFO L93 Difference]: Finished difference Result 35969 states and 56845 transitions. [2022-07-22 17:56:01,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:56:01,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:56:01,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:01,574 INFO L225 Difference]: With dead ends: 35969 [2022-07-22 17:56:01,574 INFO L226 Difference]: Without dead ends: 26083 [2022-07-22 17:56:01,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:56:01,604 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 1404 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3220 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 3298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:01,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1420 Valid, 2596 Invalid, 3298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3220 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 17:56:01,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26083 states. [2022-07-22 17:56:02,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26083 to 19554. [2022-07-22 17:56:03,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19554 states, 17924 states have (on average 1.5409506806516402) internal successors, (27620), 17989 states have internal predecessors, (27620), 1175 states have call successors, (1175), 390 states have call predecessors, (1175), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-07-22 17:56:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19554 states to 19554 states and 30763 transitions. [2022-07-22 17:56:03,077 INFO L78 Accepts]: Start accepts. Automaton has 19554 states and 30763 transitions. Word has length 163 [2022-07-22 17:56:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:03,077 INFO L495 AbstractCegarLoop]: Abstraction has 19554 states and 30763 transitions. [2022-07-22 17:56:03,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 19554 states and 30763 transitions. [2022-07-22 17:56:03,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:56:03,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:03,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:03,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 17:56:03,103 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:03,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:03,104 INFO L85 PathProgramCache]: Analyzing trace with hash 610236942, now seen corresponding path program 1 times [2022-07-22 17:56:03,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:03,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072323263] [2022-07-22 17:56:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:03,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:03,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:56:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:56:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:56:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:03,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:56:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:03,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:56:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:03,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:03,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:03,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072323263] [2022-07-22 17:56:03,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072323263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:03,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:03,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:56:03,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263859879] [2022-07-22 17:56:03,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:03,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:56:03,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:03,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:56:03,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:56:03,227 INFO L87 Difference]: Start difference. First operand 19554 states and 30763 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:09,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:09,620 INFO L93 Difference]: Finished difference Result 70929 states and 112917 transitions. [2022-07-22 17:56:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:56:09,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:56:09,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:09,857 INFO L225 Difference]: With dead ends: 70929 [2022-07-22 17:56:09,857 INFO L226 Difference]: Without dead ends: 51393 [2022-07-22 17:56:09,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:56:09,922 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 1403 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 3290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:09,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 2591 Invalid, 3290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-22 17:56:09,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51393 states. [2022-07-22 17:56:12,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51393 to 38915. [2022-07-22 17:56:12,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38915 states, 35685 states have (on average 1.539862687403671) internal successors, (54950), 35814 states have internal predecessors, (54950), 2327 states have call successors, (2327), 774 states have call predecessors, (2327), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-07-22 17:56:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38915 states to 38915 states and 61919 transitions. [2022-07-22 17:56:12,672 INFO L78 Accepts]: Start accepts. Automaton has 38915 states and 61919 transitions. Word has length 163 [2022-07-22 17:56:12,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:12,672 INFO L495 AbstractCegarLoop]: Abstraction has 38915 states and 61919 transitions. [2022-07-22 17:56:12,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:12,673 INFO L276 IsEmpty]: Start isEmpty. Operand 38915 states and 61919 transitions. [2022-07-22 17:56:12,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:56:12,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:12,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:12,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:56:12,723 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:12,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:12,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1007203508, now seen corresponding path program 1 times [2022-07-22 17:56:12,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:12,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786282064] [2022-07-22 17:56:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:12,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:56:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:56:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:56:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:56:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:56:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:12,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:12,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:12,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786282064] [2022-07-22 17:56:12,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786282064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:12,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:12,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:56:12,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559641630] [2022-07-22 17:56:12,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:12,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:56:12,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:12,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:56:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:56:12,853 INFO L87 Difference]: Start difference. First operand 38915 states and 61919 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:56:22,748 INFO L93 Difference]: Finished difference Result 140848 states and 226907 transitions. [2022-07-22 17:56:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 17:56:22,749 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 163 [2022-07-22 17:56:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:56:23,233 INFO L225 Difference]: With dead ends: 140848 [2022-07-22 17:56:23,233 INFO L226 Difference]: Without dead ends: 101951 [2022-07-22 17:56:23,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 17:56:23,348 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 1405 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 3201 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 3282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:56:23,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 2584 Invalid, 3282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3201 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 17:56:23,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101951 states. [2022-07-22 17:56:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101951 to 77764. [2022-07-22 17:56:29,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77764 states, 71334 states have (on average 1.5392379510471865) internal successors, (109800), 71591 states have internal predecessors, (109800), 4631 states have call successors, (4631), 1542 states have call predecessors, (4631), 1798 states have return successors, (11448), 4886 states have call predecessors, (11448), 4631 states have call successors, (11448) [2022-07-22 17:56:29,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77764 states to 77764 states and 125879 transitions. [2022-07-22 17:56:29,579 INFO L78 Accepts]: Start accepts. Automaton has 77764 states and 125879 transitions. Word has length 163 [2022-07-22 17:56:29,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:56:29,580 INFO L495 AbstractCegarLoop]: Abstraction has 77764 states and 125879 transitions. [2022-07-22 17:56:29,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 17:56:29,580 INFO L276 IsEmpty]: Start isEmpty. Operand 77764 states and 125879 transitions. [2022-07-22 17:56:29,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-22 17:56:29,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:56:29,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:56:29,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:56:29,666 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:56:29,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:56:29,667 INFO L85 PathProgramCache]: Analyzing trace with hash -643737010, now seen corresponding path program 1 times [2022-07-22 17:56:29,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:56:29,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992379484] [2022-07-22 17:56:29,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:56:29,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:56:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:29,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 17:56:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:29,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 17:56:29,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 17:56:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:29,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:56:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:29,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 17:56:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:56:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 17:56:29,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:56:29,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992379484] [2022-07-22 17:56:29,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992379484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:56:29,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:56:29,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 17:56:29,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881554180] [2022-07-22 17:56:29,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:56:29,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 17:56:29,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:56:29,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 17:56:29,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 17:56:29,987 INFO L87 Difference]: Start difference. First operand 77764 states and 125879 transitions. Second operand has 7 states, 7 states have (on average 21.857142857142858) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)