./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/transmitter.07.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/transmitter.07.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 022987cd4c8c671e376c5c3e5a08e2f1b98444b4d5d48bc73787bff74aa0de0f --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:41:14,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:41:14,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:41:15,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:41:15,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:41:15,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:41:15,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:41:15,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:41:15,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:41:15,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:41:15,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:41:15,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:41:15,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:41:15,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:41:15,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:41:15,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:41:15,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:41:15,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:41:15,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:41:15,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:41:15,040 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:41:15,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:41:15,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:41:15,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:41:15,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:41:15,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:41:15,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:41:15,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:41:15,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:41:15,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:41:15,050 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:41:15,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:41:15,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:41:15,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:41:15,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:41:15,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:41:15,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:41:15,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:41:15,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:41:15,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:41:15,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:41:15,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:41:15,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:41:15,082 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:41:15,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:41:15,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:41:15,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:41:15,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:41:15,085 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:41:15,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:41:15,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:41:15,087 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:41:15,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:41:15,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:41:15,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:41:15,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:41:15,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:41:15,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:41:15,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:41:15,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:41:15,090 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:41:15,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:41:15,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:41:15,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:41:15,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:41:15,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:41:15,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:41:15,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:41:15,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:41:15,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:41:15,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:41:15,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:41:15,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:41:15,093 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:41:15,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:41:15,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:41:15,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 022987cd4c8c671e376c5c3e5a08e2f1b98444b4d5d48bc73787bff74aa0de0f [2022-07-19 17:41:15,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:41:15,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:41:15,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:41:15,371 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:41:15,371 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:41:15,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/transmitter.07.cil.c [2022-07-19 17:41:15,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3a035ac2/abfd2abb2de04ead8485918b0e00aa2c/FLAGbe0f2cae6 [2022-07-19 17:41:15,786 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:41:15,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/transmitter.07.cil.c [2022-07-19 17:41:15,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3a035ac2/abfd2abb2de04ead8485918b0e00aa2c/FLAGbe0f2cae6 [2022-07-19 17:41:16,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3a035ac2/abfd2abb2de04ead8485918b0e00aa2c [2022-07-19 17:41:16,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:41:16,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:41:16,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:41:16,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:41:16,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:41:16,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72dcebfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16, skipping insertion in model container [2022-07-19 17:41:16,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:41:16,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:41:16,378 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.07.cil.c[706,719] [2022-07-19 17:41:16,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:41:16,529 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:41:16,549 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.07.cil.c[706,719] [2022-07-19 17:41:16,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:41:16,626 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:41:16,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16 WrapperNode [2022-07-19 17:41:16,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:41:16,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:41:16,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:41:16,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:41:16,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,687 INFO L137 Inliner]: procedures = 42, calls = 51, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 549 [2022-07-19 17:41:16,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:41:16,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:41:16,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:41:16,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:41:16,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:41:16,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:41:16,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:41:16,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:41:16,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16" (1/1) ... [2022-07-19 17:41:16,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:41:16,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:41:16,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 17:41:16,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 17:41:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:41:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 17:41:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 17:41:16,788 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 17:41:16,788 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 17:41:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 17:41:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 17:41:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 17:41:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 17:41:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 17:41:16,789 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 17:41:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:41:16,789 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 17:41:16,790 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 17:41:16,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:41:16,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:41:16,866 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:41:16,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:41:17,388 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:41:17,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:41:17,409 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-19 17:41:17,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:41:17 BoogieIcfgContainer [2022-07-19 17:41:17,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:41:17,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:41:17,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:41:17,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:41:17,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:41:16" (1/3) ... [2022-07-19 17:41:17,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8b379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:41:17, skipping insertion in model container [2022-07-19 17:41:17,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:41:16" (2/3) ... [2022-07-19 17:41:17,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8b379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:41:17, skipping insertion in model container [2022-07-19 17:41:17,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:41:17" (3/3) ... [2022-07-19 17:41:17,421 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.07.cil.c [2022-07-19 17:41:17,438 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:41:17,439 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:41:17,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:41:17,520 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@68f3af28, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@141d575c [2022-07-19 17:41:17,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:41:17,525 INFO L276 IsEmpty]: Start isEmpty. Operand has 253 states, 225 states have (on average 1.64) internal successors, (369), 227 states have internal predecessors, (369), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 17:41:17,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:41:17,541 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:17,542 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] [2022-07-19 17:41:17,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:17,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:17,548 INFO L85 PathProgramCache]: Analyzing trace with hash 208630803, now seen corresponding path program 1 times [2022-07-19 17:41:17,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:17,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217194187] [2022-07-19 17:41:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:17,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:41:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:17,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:41:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:17,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:41:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:17,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:41:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:18,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:18,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217194187] [2022-07-19 17:41:18,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217194187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:18,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:18,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:41:18,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996851080] [2022-07-19 17:41:18,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:18,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:41:18,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:18,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:41:18,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:41:18,047 INFO L87 Difference]: Start difference. First operand has 253 states, 225 states have (on average 1.64) internal successors, (369), 227 states have internal predecessors, (369), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:18,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:18,996 INFO L93 Difference]: Finished difference Result 580 states and 946 transitions. [2022-07-19 17:41:18,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:41:18,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 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 127 [2022-07-19 17:41:18,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:19,022 INFO L225 Difference]: With dead ends: 580 [2022-07-19 17:41:19,022 INFO L226 Difference]: Without dead ends: 333 [2022-07-19 17:41:19,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:41:19,031 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 641 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:19,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 685 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 17:41:19,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-19 17:41:19,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 248. [2022-07-19 17:41:19,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 221 states have (on average 1.5384615384615385) internal successors, (340), 222 states have internal predecessors, (340), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 17:41:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 380 transitions. [2022-07-19 17:41:19,130 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 380 transitions. Word has length 127 [2022-07-19 17:41:19,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:19,131 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 380 transitions. [2022-07-19 17:41:19,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 380 transitions. [2022-07-19 17:41:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:41:19,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:19,137 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] [2022-07-19 17:41:19,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:41:19,138 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:19,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:19,138 INFO L85 PathProgramCache]: Analyzing trace with hash 541273941, now seen corresponding path program 1 times [2022-07-19 17:41:19,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:19,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920772791] [2022-07-19 17:41:19,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:19,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:19,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:19,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:41:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:41:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:19,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:41:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:41:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:19,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:19,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:19,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920772791] [2022-07-19 17:41:19,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920772791] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:19,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:19,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 17:41:19,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566417741] [2022-07-19 17:41:19,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:19,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 17:41:19,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:19,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 17:41:19,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:41:19,358 INFO L87 Difference]: Start difference. First operand 248 states and 380 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:21,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:21,043 INFO L93 Difference]: Finished difference Result 891 states and 1407 transitions. [2022-07-19 17:41:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 17:41:21,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 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 127 [2022-07-19 17:41:21,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:21,050 INFO L225 Difference]: With dead ends: 891 [2022-07-19 17:41:21,051 INFO L226 Difference]: Without dead ends: 658 [2022-07-19 17:41:21,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:41:21,058 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 955 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:21,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 1064 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 17:41:21,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-07-19 17:41:21,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 488. [2022-07-19 17:41:21,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 439 states have (on average 1.5489749430523918) internal successors, (680), 441 states have internal predecessors, (680), 35 states have call successors, (35), 12 states have call predecessors, (35), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2022-07-19 17:41:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 753 transitions. [2022-07-19 17:41:21,126 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 753 transitions. Word has length 127 [2022-07-19 17:41:21,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:21,128 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 753 transitions. [2022-07-19 17:41:21,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:21,129 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 753 transitions. [2022-07-19 17:41:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:41:21,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:21,136 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] [2022-07-19 17:41:21,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:41:21,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:21,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1967689878, now seen corresponding path program 1 times [2022-07-19 17:41:21,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:21,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958167008] [2022-07-19 17:41:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:21,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:41:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:21,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:41:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:21,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:41:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:21,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:41:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:21,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:21,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958167008] [2022-07-19 17:41:21,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958167008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:21,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:21,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:21,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154746337] [2022-07-19 17:41:21,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:21,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:21,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:21,313 INFO L87 Difference]: Start difference. First operand 488 states and 753 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:23,664 INFO L93 Difference]: Finished difference Result 1575 states and 2466 transitions. [2022-07-19 17:41:23,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:41:23,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-07-19 17:41:23,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:23,674 INFO L225 Difference]: With dead ends: 1575 [2022-07-19 17:41:23,675 INFO L226 Difference]: Without dead ends: 1102 [2022-07-19 17:41:23,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:41:23,689 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 1040 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 2480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:23,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1979 Invalid, 2480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 17:41:23,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-07-19 17:41:23,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 713. [2022-07-19 17:41:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 642 states have (on average 1.5420560747663552) internal successors, (990), 645 states have internal predecessors, (990), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-07-19 17:41:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1095 transitions. [2022-07-19 17:41:23,774 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1095 transitions. Word has length 127 [2022-07-19 17:41:23,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:23,774 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1095 transitions. [2022-07-19 17:41:23,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:23,774 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1095 transitions. [2022-07-19 17:41:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:41:23,778 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:23,778 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] [2022-07-19 17:41:23,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:41:23,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -5475500, now seen corresponding path program 1 times [2022-07-19 17:41:23,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:23,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730793245] [2022-07-19 17:41:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:23,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:23,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:41:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:23,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:41:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:23,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:41:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:23,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:41:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:23,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:23,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730793245] [2022-07-19 17:41:23,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730793245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:23,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:23,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:23,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871950185] [2022-07-19 17:41:23,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:23,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:23,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:23,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:23,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:23,920 INFO L87 Difference]: Start difference. First operand 713 states and 1095 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:26,098 INFO L93 Difference]: Finished difference Result 2422 states and 3782 transitions. [2022-07-19 17:41:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:41:26,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-07-19 17:41:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:26,107 INFO L225 Difference]: With dead ends: 2422 [2022-07-19 17:41:26,107 INFO L226 Difference]: Without dead ends: 1724 [2022-07-19 17:41:26,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:41:26,110 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 1036 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:26,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 1972 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 17:41:26,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2022-07-19 17:41:26,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1166. [2022-07-19 17:41:26,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1051 states have (on average 1.5366317792578497) internal successors, (1615), 1056 states have internal predecessors, (1615), 80 states have call successors, (80), 30 states have call predecessors, (80), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2022-07-19 17:41:26,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1788 transitions. [2022-07-19 17:41:26,179 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1788 transitions. Word has length 127 [2022-07-19 17:41:26,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:26,180 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1788 transitions. [2022-07-19 17:41:26,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:26,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1788 transitions. [2022-07-19 17:41:26,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:41:26,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:26,186 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] [2022-07-19 17:41:26,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:41:26,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:26,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:26,187 INFO L85 PathProgramCache]: Analyzing trace with hash -2147335978, now seen corresponding path program 1 times [2022-07-19 17:41:26,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:26,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611874200] [2022-07-19 17:41:26,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:26,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:26,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:26,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:41:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:26,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:41:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:41:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:26,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:41:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:26,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:26,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611874200] [2022-07-19 17:41:26,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611874200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:26,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:26,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:26,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681147776] [2022-07-19 17:41:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:26,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:26,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:26,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:26,300 INFO L87 Difference]: Start difference. First operand 1166 states and 1788 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:28,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:28,533 INFO L93 Difference]: Finished difference Result 4063 states and 6323 transitions. [2022-07-19 17:41:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:41:28,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-07-19 17:41:28,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:28,546 INFO L225 Difference]: With dead ends: 4063 [2022-07-19 17:41:28,546 INFO L226 Difference]: Without dead ends: 2912 [2022-07-19 17:41:28,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:41:28,552 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 1035 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 2453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:28,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1967 Invalid, 2453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 17:41:28,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2022-07-19 17:41:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2075. [2022-07-19 17:41:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 1872 states have (on average 1.5325854700854702) internal successors, (2869), 1881 states have internal predecessors, (2869), 140 states have call successors, (140), 54 states have call predecessors, (140), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2022-07-19 17:41:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3184 transitions. [2022-07-19 17:41:28,677 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3184 transitions. Word has length 127 [2022-07-19 17:41:28,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:28,677 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 3184 transitions. [2022-07-19 17:41:28,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:28,678 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3184 transitions. [2022-07-19 17:41:28,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:41:28,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:28,682 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] [2022-07-19 17:41:28,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:41:28,682 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:28,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1524349716, now seen corresponding path program 1 times [2022-07-19 17:41:28,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:28,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654883888] [2022-07-19 17:41:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:28,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:41:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:41:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:41:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:41:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:28,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:28,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654883888] [2022-07-19 17:41:28,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654883888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:28,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:28,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:28,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804055785] [2022-07-19 17:41:28,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:28,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:28,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:28,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:28,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:28,796 INFO L87 Difference]: Start difference. First operand 2075 states and 3184 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:30,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:30,830 INFO L93 Difference]: Finished difference Result 7346 states and 11425 transitions. [2022-07-19 17:41:30,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:41:30,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-07-19 17:41:30,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:30,855 INFO L225 Difference]: With dead ends: 7346 [2022-07-19 17:41:30,856 INFO L226 Difference]: Without dead ends: 5286 [2022-07-19 17:41:30,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:41:30,865 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 1034 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1962 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:30,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1962 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 17:41:30,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2022-07-19 17:41:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 3900. [2022-07-19 17:41:31,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3900 states, 3521 states have (on average 1.5299630786708323) internal successors, (5387), 3538 states have internal predecessors, (5387), 260 states have call successors, (260), 102 states have call predecessors, (260), 118 states have return successors, (357), 275 states have call predecessors, (357), 260 states have call successors, (357) [2022-07-19 17:41:31,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 6004 transitions. [2022-07-19 17:41:31,115 INFO L78 Accepts]: Start accepts. Automaton has 3900 states and 6004 transitions. Word has length 127 [2022-07-19 17:41:31,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:31,116 INFO L495 AbstractCegarLoop]: Abstraction has 3900 states and 6004 transitions. [2022-07-19 17:41:31,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3900 states and 6004 transitions. [2022-07-19 17:41:31,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:41:31,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:31,123 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] [2022-07-19 17:41:31,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:41:31,123 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:31,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1642791190, now seen corresponding path program 1 times [2022-07-19 17:41:31,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:31,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092937348] [2022-07-19 17:41:31,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:31,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:31,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:41:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:31,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:41:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:31,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:41:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:41:31,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:31,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:31,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:31,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092937348] [2022-07-19 17:41:31,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092937348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:31,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:31,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:31,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962460075] [2022-07-19 17:41:31,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:31,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:31,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:31,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:31,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:31,243 INFO L87 Difference]: Start difference. First operand 3900 states and 6004 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:33,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:33,617 INFO L93 Difference]: Finished difference Result 13913 states and 21691 transitions. [2022-07-19 17:41:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:41:33,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-07-19 17:41:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:33,669 INFO L225 Difference]: With dead ends: 13913 [2022-07-19 17:41:33,670 INFO L226 Difference]: Without dead ends: 10028 [2022-07-19 17:41:33,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:41:33,690 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 1033 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:33,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 1957 Invalid, 2437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 17:41:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10028 states. [2022-07-19 17:41:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10028 to 7565. [2022-07-19 17:41:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7565 states, 6834 states have (on average 1.5283874743927421) internal successors, (10445), 6867 states have internal predecessors, (10445), 500 states have call successors, (500), 198 states have call predecessors, (500), 230 states have return successors, (775), 531 states have call predecessors, (775), 500 states have call successors, (775) [2022-07-19 17:41:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7565 states to 7565 states and 11720 transitions. [2022-07-19 17:41:34,209 INFO L78 Accepts]: Start accepts. Automaton has 7565 states and 11720 transitions. Word has length 127 [2022-07-19 17:41:34,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:34,209 INFO L495 AbstractCegarLoop]: Abstraction has 7565 states and 11720 transitions. [2022-07-19 17:41:34,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 7565 states and 11720 transitions. [2022-07-19 17:41:34,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:41:34,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:34,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:41:34,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:41:34,222 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:34,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:34,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1262882092, now seen corresponding path program 1 times [2022-07-19 17:41:34,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:34,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850575926] [2022-07-19 17:41:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:34,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:34,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:41:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:41:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:41:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:34,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:41:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:34,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:34,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850575926] [2022-07-19 17:41:34,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850575926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:34,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:34,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:34,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805822154] [2022-07-19 17:41:34,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:34,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:34,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:34,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:34,323 INFO L87 Difference]: Start difference. First operand 7565 states and 11720 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:37,090 INFO L93 Difference]: Finished difference Result 27048 states and 42417 transitions. [2022-07-19 17:41:37,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 17:41:37,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-07-19 17:41:37,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:37,230 INFO L225 Difference]: With dead ends: 27048 [2022-07-19 17:41:37,230 INFO L226 Difference]: Without dead ends: 19498 [2022-07-19 17:41:37,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 17:41:37,261 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1087 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 2154 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:37,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1378 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2154 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 17:41:37,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19498 states. [2022-07-19 17:41:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19498 to 14926. [2022-07-19 17:41:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14926 states, 13491 states have (on average 1.5274627529464087) internal successors, (20607), 13556 states have internal predecessors, (20607), 980 states have call successors, (980), 390 states have call predecessors, (980), 454 states have return successors, (1773), 1043 states have call predecessors, (1773), 980 states have call successors, (1773) [2022-07-19 17:41:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14926 states to 14926 states and 23360 transitions. [2022-07-19 17:41:38,211 INFO L78 Accepts]: Start accepts. Automaton has 14926 states and 23360 transitions. Word has length 127 [2022-07-19 17:41:38,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:38,212 INFO L495 AbstractCegarLoop]: Abstraction has 14926 states and 23360 transitions. [2022-07-19 17:41:38,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:38,213 INFO L276 IsEmpty]: Start isEmpty. Operand 14926 states and 23360 transitions. [2022-07-19 17:41:38,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:41:38,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:38,239 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] [2022-07-19 17:41:38,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:41:38,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:38,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:38,241 INFO L85 PathProgramCache]: Analyzing trace with hash 998691158, now seen corresponding path program 1 times [2022-07-19 17:41:38,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:38,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544026785] [2022-07-19 17:41:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:38,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:41:38,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:41:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:41:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:41:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:38,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:38,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544026785] [2022-07-19 17:41:38,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544026785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:38,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:38,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:38,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667463241] [2022-07-19 17:41:38,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:38,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:38,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:38,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:38,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:38,350 INFO L87 Difference]: Start difference. First operand 14926 states and 23360 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:42,746 INFO L93 Difference]: Finished difference Result 59463 states and 93689 transitions. [2022-07-19 17:41:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 17:41:42,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-07-19 17:41:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:42,942 INFO L225 Difference]: With dead ends: 59463 [2022-07-19 17:41:42,943 INFO L226 Difference]: Without dead ends: 44552 [2022-07-19 17:41:43,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:41:43,007 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 1097 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 2422 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1935 SdHoareTripleChecker+Invalid, 2501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:43,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 1935 Invalid, 2501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2422 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 17:41:43,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44552 states. [2022-07-19 17:41:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44552 to 29455. [2022-07-19 17:41:44,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29455 states, 26676 states have (on average 1.530701754385965) internal successors, (40833), 26805 states have internal predecessors, (40833), 1876 states have call successors, (1876), 774 states have call predecessors, (1876), 902 states have return successors, (4191), 2003 states have call predecessors, (4191), 1876 states have call successors, (4191) [2022-07-19 17:41:44,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29455 states to 29455 states and 46900 transitions. [2022-07-19 17:41:44,941 INFO L78 Accepts]: Start accepts. Automaton has 29455 states and 46900 transitions. Word has length 127 [2022-07-19 17:41:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:44,942 INFO L495 AbstractCegarLoop]: Abstraction has 29455 states and 46900 transitions. [2022-07-19 17:41:44,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 29455 states and 46900 transitions. [2022-07-19 17:41:44,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:41:44,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:44,994 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] [2022-07-19 17:41:44,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:41:44,994 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:44,995 INFO L85 PathProgramCache]: Analyzing trace with hash -868017516, now seen corresponding path program 1 times [2022-07-19 17:41:44,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:44,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603693021] [2022-07-19 17:41:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:44,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:41:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:45,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:41:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:45,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:41:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:45,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:41:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:45,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:45,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:45,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603693021] [2022-07-19 17:41:45,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603693021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:45,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:45,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:45,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059909654] [2022-07-19 17:41:45,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:45,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:45,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:45,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:45,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:45,099 INFO L87 Difference]: Start difference. First operand 29455 states and 46900 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:48,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:48,214 INFO L93 Difference]: Finished difference Result 67709 states and 109915 transitions. [2022-07-19 17:41:48,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:41:48,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-07-19 17:41:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:48,396 INFO L225 Difference]: With dead ends: 67709 [2022-07-19 17:41:48,397 INFO L226 Difference]: Without dead ends: 38269 [2022-07-19 17:41:48,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:41:48,487 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 696 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:48,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 974 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 17:41:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38269 states. [2022-07-19 17:41:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38269 to 29455. [2022-07-19 17:41:50,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29455 states, 26676 states have (on average 1.5258659469185785) internal successors, (40704), 26805 states have internal predecessors, (40704), 1876 states have call successors, (1876), 774 states have call predecessors, (1876), 902 states have return successors, (4191), 2003 states have call predecessors, (4191), 1876 states have call successors, (4191) [2022-07-19 17:41:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29455 states to 29455 states and 46771 transitions. [2022-07-19 17:41:50,378 INFO L78 Accepts]: Start accepts. Automaton has 29455 states and 46771 transitions. Word has length 127 [2022-07-19 17:41:50,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:41:50,378 INFO L495 AbstractCegarLoop]: Abstraction has 29455 states and 46771 transitions. [2022-07-19 17:41:50,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:50,379 INFO L276 IsEmpty]: Start isEmpty. Operand 29455 states and 46771 transitions. [2022-07-19 17:41:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:41:50,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:41:50,430 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] [2022-07-19 17:41:50,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:41:50,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:41:50,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:41:50,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1029479250, now seen corresponding path program 1 times [2022-07-19 17:41:50,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:41:50,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830891756] [2022-07-19 17:41:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:41:50,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:41:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:41:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:41:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:41:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:41:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:41:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:41:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:41:50,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:41:50,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830891756] [2022-07-19 17:41:50,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830891756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:41:50,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:41:50,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:41:50,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687162435] [2022-07-19 17:41:50,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:41:50,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:41:50,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:41:50,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:41:50,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:41:50,538 INFO L87 Difference]: Start difference. First operand 29455 states and 46771 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:41:57,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:41:57,684 INFO L93 Difference]: Finished difference Result 111746 states and 178803 transitions. [2022-07-19 17:41:57,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 17:41:57,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-07-19 17:41:57,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:41:58,073 INFO L225 Difference]: With dead ends: 111746 [2022-07-19 17:41:58,074 INFO L226 Difference]: Without dead ends: 82306 [2022-07-19 17:41:58,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:41:58,176 INFO L413 NwaCegarLoop]: 710 mSDtfsCounter, 1055 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 17:41:58,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 1920 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 17:41:58,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82306 states. [2022-07-19 17:42:01,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82306 to 58770. [2022-07-19 17:42:01,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58770 states, 53367 states have (on average 1.5279479828358349) internal successors, (81542), 53624 states have internal predecessors, (81542), 3604 states have call successors, (3604), 1542 states have call predecessors, (3604), 1798 states have return successors, (10421), 3859 states have call predecessors, (10421), 3604 states have call successors, (10421) [2022-07-19 17:42:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58770 states to 58770 states and 95567 transitions. [2022-07-19 17:42:02,167 INFO L78 Accepts]: Start accepts. Automaton has 58770 states and 95567 transitions. Word has length 127 [2022-07-19 17:42:02,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:42:02,168 INFO L495 AbstractCegarLoop]: Abstraction has 58770 states and 95567 transitions. [2022-07-19 17:42:02,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:42:02,168 INFO L276 IsEmpty]: Start isEmpty. Operand 58770 states and 95567 transitions. [2022-07-19 17:42:02,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:42:02,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:42:02,278 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] [2022-07-19 17:42:02,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:42:02,278 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:42:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:42:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2060520148, now seen corresponding path program 1 times [2022-07-19 17:42:02,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:42:02,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379746800] [2022-07-19 17:42:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:42:02,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:42:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:02,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:42:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:42:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:02,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:42:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:42:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:02,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:42:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:42:02,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:42:02,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379746800] [2022-07-19 17:42:02,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379746800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:42:02,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:42:02,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:42:02,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893234705] [2022-07-19 17:42:02,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:42:02,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:42:02,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:42:02,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:42:02,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:42:02,392 INFO L87 Difference]: Start difference. First operand 58770 states and 95567 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:42:14,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:42:14,663 INFO L93 Difference]: Finished difference Result 218243 states and 357965 transitions. [2022-07-19 17:42:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 17:42:14,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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 127 [2022-07-19 17:42:14,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:42:15,538 INFO L225 Difference]: With dead ends: 218243 [2022-07-19 17:42:15,539 INFO L226 Difference]: Without dead ends: 159488 [2022-07-19 17:42:15,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:42:15,753 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1117 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1137 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 17:42:15,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1137 Valid, 1871 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 17:42:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159488 states. [2022-07-19 17:42:23,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159488 to 117267. [2022-07-19 17:42:23,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117267 states, 106744 states have (on average 1.5301656299183093) internal successors, (163336), 107257 states have internal predecessors, (163336), 6932 states have call successors, (6932), 3078 states have call predecessors, (6932), 3590 states have return successors, (27127), 7443 states have call predecessors, (27127), 6932 states have call successors, (27127) [2022-07-19 17:42:24,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117267 states to 117267 states and 197395 transitions. [2022-07-19 17:42:24,121 INFO L78 Accepts]: Start accepts. Automaton has 117267 states and 197395 transitions. Word has length 127 [2022-07-19 17:42:24,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:42:24,122 INFO L495 AbstractCegarLoop]: Abstraction has 117267 states and 197395 transitions. [2022-07-19 17:42:24,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 17:42:24,122 INFO L276 IsEmpty]: Start isEmpty. Operand 117267 states and 197395 transitions. [2022-07-19 17:42:24,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-19 17:42:24,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:42:24,287 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] [2022-07-19 17:42:24,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:42:24,288 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:42:24,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:42:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash 154116882, now seen corresponding path program 1 times [2022-07-19 17:42:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:42:24,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145077365] [2022-07-19 17:42:24,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:42:24,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:42:24,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 17:42:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:24,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 17:42:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 17:42:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:42:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 17:42:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:42:24,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:42:24,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:42:24,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145077365] [2022-07-19 17:42:24,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145077365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:42:24,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:42:24,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:42:24,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045324624] [2022-07-19 17:42:24,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:42:24,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:42:24,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:42:24,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:42:24,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:42:24,389 INFO L87 Difference]: Start difference. First operand 117267 states and 197395 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 5 states have internal predecessors, (117), 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)