./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.06.cil-1.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 4ff0d99c6257365cafb7459615c8e1194d53bcc0d71dc100705abd4bb2d65c37 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:15:07,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:15:07,021 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:15:07,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:15:07,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:15:07,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:15:07,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:15:07,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:15:07,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:15:07,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:15:07,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:15:07,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:15:07,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:15:07,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:15:07,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:15:07,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:15:07,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:15:07,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:15:07,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:15:07,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:15:07,086 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:15:07,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:15:07,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:15:07,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:15:07,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:15:07,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:15:07,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:15:07,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:15:07,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:15:07,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:15:07,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:15:07,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:15:07,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:15:07,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:15:07,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:15:07,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:15:07,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:15:07,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:15:07,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:15:07,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:15:07,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:15:07,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:15:07,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:15:07,127 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:15:07,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:15:07,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:15:07,128 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:15:07,129 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:15:07,129 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:15:07,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:15:07,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:15:07,130 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:15:07,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:15:07,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:15:07,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:15:07,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:15:07,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:15:07,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:15:07,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:15:07,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:15:07,132 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:15:07,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:15:07,132 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:15:07,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:15:07,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:15:07,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:15:07,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:15:07,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:15:07,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:15:07,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:15:07,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:15:07,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:15:07,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:15:07,134 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:15:07,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:15:07,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:15:07,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ff0d99c6257365cafb7459615c8e1194d53bcc0d71dc100705abd4bb2d65c37 [2022-07-21 05:15:07,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:15:07,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:15:07,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:15:07,391 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:15:07,392 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:15:07,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2022-07-21 05:15:07,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80fea1aea/71fae1da8176402391d33c6bc0e7dbab/FLAG2017b3c9a [2022-07-21 05:15:07,812 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:15:07,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2022-07-21 05:15:07,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80fea1aea/71fae1da8176402391d33c6bc0e7dbab/FLAG2017b3c9a [2022-07-21 05:15:08,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80fea1aea/71fae1da8176402391d33c6bc0e7dbab [2022-07-21 05:15:08,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:15:08,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:15:08,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:15:08,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:15:08,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:15:08,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c3de741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08, skipping insertion in model container [2022-07-21 05:15:08,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:15:08,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:15:08,350 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/token_ring.06.cil-1.c[671,684] [2022-07-21 05:15:08,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:15:08,454 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:15:08,470 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/token_ring.06.cil-1.c[671,684] [2022-07-21 05:15:08,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:15:08,547 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:15:08,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08 WrapperNode [2022-07-21 05:15:08,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:15:08,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:15:08,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:15:08,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:15:08,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,608 INFO L137 Inliner]: procedures = 40, calls = 50, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 510 [2022-07-21 05:15:08,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:15:08,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:15:08,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:15:08,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:15:08,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:15:08,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:15:08,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:15:08,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:15:08,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08" (1/1) ... [2022-07-21 05:15:08,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:15:08,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:15:08,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:15:08,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:15:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:15:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-21 05:15:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-21 05:15:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 05:15:08,713 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 05:15:08,713 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 05:15:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 05:15:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 05:15:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 05:15:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 05:15:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 05:15:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 05:15:08,714 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 05:15:08,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:15:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 05:15:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 05:15:08,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:15:08,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:15:08,837 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:15:08,856 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:15:09,238 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:15:09,246 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:15:09,246 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-21 05:15:09,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:15:09 BoogieIcfgContainer [2022-07-21 05:15:09,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:15:09,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:15:09,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:15:09,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:15:09,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:15:08" (1/3) ... [2022-07-21 05:15:09,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a40887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:15:09, skipping insertion in model container [2022-07-21 05:15:09,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:15:08" (2/3) ... [2022-07-21 05:15:09,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a40887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:15:09, skipping insertion in model container [2022-07-21 05:15:09,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:15:09" (3/3) ... [2022-07-21 05:15:09,254 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-1.c [2022-07-21 05:15:09,265 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:15:09,265 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:15:09,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:15:09,313 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@111b529, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@49d756a2 [2022-07-21 05:15:09,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:15:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 209 states have (on average 1.6411483253588517) internal successors, (343), 213 states have internal predecessors, (343), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 05:15:09,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:09,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:09,330 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] [2022-07-21 05:15:09,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:09,344 INFO L85 PathProgramCache]: Analyzing trace with hash 750572517, now seen corresponding path program 1 times [2022-07-21 05:15:09,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:09,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385348225] [2022-07-21 05:15:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:09,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:09,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:09,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:09,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:09,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385348225] [2022-07-21 05:15:09,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385348225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:09,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:09,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:15:09,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99777273] [2022-07-21 05:15:09,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:09,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:15:09,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:09,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:15:09,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:15:09,711 INFO L87 Difference]: Start difference. First operand has 240 states, 209 states have (on average 1.6411483253588517) internal successors, (343), 213 states have internal predecessors, (343), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:10,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:10,429 INFO L93 Difference]: Finished difference Result 548 states and 896 transitions. [2022-07-21 05:15:10,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:15:10,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:15:10,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:10,441 INFO L225 Difference]: With dead ends: 548 [2022-07-21 05:15:10,442 INFO L226 Difference]: Without dead ends: 310 [2022-07-21 05:15:10,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:15:10,447 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 598 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:10,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [616 Valid, 655 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:15:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-21 05:15:10,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 234. [2022-07-21 05:15:10,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 205 states have (on average 1.551219512195122) internal successors, (318), 207 states have internal predecessors, (318), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-21 05:15:10,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 360 transitions. [2022-07-21 05:15:10,513 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 360 transitions. Word has length 112 [2022-07-21 05:15:10,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:10,513 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 360 transitions. [2022-07-21 05:15:10,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:10,514 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 360 transitions. [2022-07-21 05:15:10,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:10,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:10,520 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] [2022-07-21 05:15:10,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:15:10,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:10,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 632131043, now seen corresponding path program 1 times [2022-07-21 05:15:10,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:10,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166909665] [2022-07-21 05:15:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:10,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:10,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:10,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:10,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:10,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:10,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166909665] [2022-07-21 05:15:10,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166909665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:10,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:10,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:15:10,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764515861] [2022-07-21 05:15:10,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:10,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:15:10,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:10,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:15:10,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:15:10,654 INFO L87 Difference]: Start difference. First operand 234 states and 360 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:11,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:11,771 INFO L93 Difference]: Finished difference Result 832 states and 1311 transitions. [2022-07-21 05:15:11,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:15:11,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:15:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:11,776 INFO L225 Difference]: With dead ends: 832 [2022-07-21 05:15:11,776 INFO L226 Difference]: Without dead ends: 612 [2022-07-21 05:15:11,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:15:11,778 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 879 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:11,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1024 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 05:15:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2022-07-21 05:15:11,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 459. [2022-07-21 05:15:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 408 states have (on average 1.5637254901960784) internal successors, (638), 411 states have internal predecessors, (638), 37 states have call successors, (37), 13 states have call predecessors, (37), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2022-07-21 05:15:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 713 transitions. [2022-07-21 05:15:11,809 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 713 transitions. Word has length 112 [2022-07-21 05:15:11,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:11,809 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 713 transitions. [2022-07-21 05:15:11,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 713 transitions. [2022-07-21 05:15:11,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:11,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:11,812 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] [2022-07-21 05:15:11,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:15:11,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:11,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1626383839, now seen corresponding path program 1 times [2022-07-21 05:15:11,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:11,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910927449] [2022-07-21 05:15:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:11,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:11,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:11,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:11,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:11,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:11,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:11,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:11,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910927449] [2022-07-21 05:15:11,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910927449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:11,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:11,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:11,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548757137] [2022-07-21 05:15:11,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:11,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:11,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:11,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:11,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:11,932 INFO L87 Difference]: Start difference. First operand 459 states and 713 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:13,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:13,299 INFO L93 Difference]: Finished difference Result 1365 states and 2151 transitions. [2022-07-21 05:15:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:13,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:15:13,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:13,304 INFO L225 Difference]: With dead ends: 1365 [2022-07-21 05:15:13,304 INFO L226 Difference]: Without dead ends: 920 [2022-07-21 05:15:13,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:13,306 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 883 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:13,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 1786 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 05:15:13,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-07-21 05:15:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 669. [2022-07-21 05:15:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 596 states have (on average 1.5570469798657718) internal successors, (928), 600 states have internal predecessors, (928), 52 states have call successors, (52), 19 states have call predecessors, (52), 20 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-07-21 05:15:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1035 transitions. [2022-07-21 05:15:13,347 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1035 transitions. Word has length 112 [2022-07-21 05:15:13,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:13,347 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 1035 transitions. [2022-07-21 05:15:13,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1035 transitions. [2022-07-21 05:15:13,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:13,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:13,352 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] [2022-07-21 05:15:13,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:15:13,352 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:13,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:13,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1317198239, now seen corresponding path program 1 times [2022-07-21 05:15:13,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:13,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627390561] [2022-07-21 05:15:13,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:13,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:13,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:13,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:13,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:13,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627390561] [2022-07-21 05:15:13,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627390561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:13,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:13,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:13,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921513829] [2022-07-21 05:15:13,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:13,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:13,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:13,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:13,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:13,470 INFO L87 Difference]: Start difference. First operand 669 states and 1035 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:14,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:14,788 INFO L93 Difference]: Finished difference Result 2150 states and 3381 transitions. [2022-07-21 05:15:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:14,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:15:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:14,794 INFO L225 Difference]: With dead ends: 2150 [2022-07-21 05:15:14,794 INFO L226 Difference]: Without dead ends: 1495 [2022-07-21 05:15:14,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:14,797 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 949 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:14,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1227 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 05:15:14,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2022-07-21 05:15:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1090. [2022-07-21 05:15:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 973 states have (on average 1.5508735868448098) internal successors, (1509), 979 states have internal predecessors, (1509), 82 states have call successors, (82), 31 states have call predecessors, (82), 34 states have return successors, (93), 83 states have call predecessors, (93), 80 states have call successors, (93) [2022-07-21 05:15:14,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1684 transitions. [2022-07-21 05:15:14,840 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1684 transitions. Word has length 112 [2022-07-21 05:15:14,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:14,840 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1684 transitions. [2022-07-21 05:15:14,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1684 transitions. [2022-07-21 05:15:14,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:14,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:14,842 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] [2022-07-21 05:15:14,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:15:14,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:14,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:14,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1358794143, now seen corresponding path program 1 times [2022-07-21 05:15:14,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:14,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376039135] [2022-07-21 05:15:14,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:14,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:14,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:14,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:14,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:14,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:14,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:14,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376039135] [2022-07-21 05:15:14,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376039135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:14,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:14,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:14,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893851595] [2022-07-21 05:15:14,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:14,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:14,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:14,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:14,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:14,940 INFO L87 Difference]: Start difference. First operand 1090 states and 1684 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:16,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:16,246 INFO L93 Difference]: Finished difference Result 3660 states and 5738 transitions. [2022-07-21 05:15:16,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:16,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:15:16,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:16,255 INFO L225 Difference]: With dead ends: 3660 [2022-07-21 05:15:16,255 INFO L226 Difference]: Without dead ends: 2584 [2022-07-21 05:15:16,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:16,260 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 877 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 1836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:16,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1770 Invalid, 1836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 05:15:16,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2584 states. [2022-07-21 05:15:16,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2584 to 1938. [2022-07-21 05:15:16,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1938 states, 1733 states have (on average 1.5470282746682054) internal successors, (2681), 1743 states have internal predecessors, (2681), 142 states have call successors, (142), 55 states have call predecessors, (142), 62 states have return successors, (175), 147 states have call predecessors, (175), 140 states have call successors, (175) [2022-07-21 05:15:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2998 transitions. [2022-07-21 05:15:16,377 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2998 transitions. Word has length 112 [2022-07-21 05:15:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:16,378 INFO L495 AbstractCegarLoop]: Abstraction has 1938 states and 2998 transitions. [2022-07-21 05:15:16,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2998 transitions. [2022-07-21 05:15:16,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:16,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:16,380 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] [2022-07-21 05:15:16,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:15:16,380 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:16,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:16,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1330293853, now seen corresponding path program 1 times [2022-07-21 05:15:16,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:16,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098130545] [2022-07-21 05:15:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:16,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:16,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:16,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:16,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:16,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:16,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098130545] [2022-07-21 05:15:16,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098130545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:16,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:16,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:16,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244954755] [2022-07-21 05:15:16,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:16,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:16,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:16,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:16,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:16,471 INFO L87 Difference]: Start difference. First operand 1938 states and 2998 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:17,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:17,873 INFO L93 Difference]: Finished difference Result 6690 states and 10486 transitions. [2022-07-21 05:15:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:17,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:15:17,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:17,892 INFO L225 Difference]: With dead ends: 6690 [2022-07-21 05:15:17,893 INFO L226 Difference]: Without dead ends: 4766 [2022-07-21 05:15:17,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:17,900 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 876 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1754 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:17,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 1765 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1754 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 05:15:17,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4766 states. [2022-07-21 05:15:18,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4766 to 3639. [2022-07-21 05:15:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3258 states have (on average 1.5441988950276244) internal successors, (5031), 3276 states have internal predecessors, (5031), 262 states have call successors, (262), 103 states have call predecessors, (262), 118 states have return successors, (357), 275 states have call predecessors, (357), 260 states have call successors, (357) [2022-07-21 05:15:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 5650 transitions. [2022-07-21 05:15:18,098 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 5650 transitions. Word has length 112 [2022-07-21 05:15:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:18,099 INFO L495 AbstractCegarLoop]: Abstraction has 3639 states and 5650 transitions. [2022-07-21 05:15:18,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:18,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 5650 transitions. [2022-07-21 05:15:18,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:18,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:18,102 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] [2022-07-21 05:15:18,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:15:18,102 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash -610288161, now seen corresponding path program 1 times [2022-07-21 05:15:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:18,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68143821] [2022-07-21 05:15:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:18,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:18,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:18,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:18,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:18,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:18,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:18,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68143821] [2022-07-21 05:15:18,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68143821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:18,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:18,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:18,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266239911] [2022-07-21 05:15:18,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:18,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:18,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:18,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:18,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:18,190 INFO L87 Difference]: Start difference. First operand 3639 states and 5650 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:19,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:19,731 INFO L93 Difference]: Finished difference Result 12749 states and 20040 transitions. [2022-07-21 05:15:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:15:19,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:15:19,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:19,764 INFO L225 Difference]: With dead ends: 12749 [2022-07-21 05:15:19,765 INFO L226 Difference]: Without dead ends: 9124 [2022-07-21 05:15:19,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:15:19,777 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 875 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 1746 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:19,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1760 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1746 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 05:15:19,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9124 states. [2022-07-21 05:15:20,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9124 to 7056. [2022-07-21 05:15:20,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7056 states, 6323 states have (on average 1.5424640202435553) internal successors, (9753), 6357 states have internal predecessors, (9753), 502 states have call successors, (502), 199 states have call predecessors, (502), 230 states have return successors, (775), 531 states have call predecessors, (775), 500 states have call successors, (775) [2022-07-21 05:15:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7056 states to 7056 states and 11030 transitions. [2022-07-21 05:15:20,103 INFO L78 Accepts]: Start accepts. Automaton has 7056 states and 11030 transitions. Word has length 112 [2022-07-21 05:15:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:20,103 INFO L495 AbstractCegarLoop]: Abstraction has 7056 states and 11030 transitions. [2022-07-21 05:15:20,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:20,103 INFO L276 IsEmpty]: Start isEmpty. Operand 7056 states and 11030 transitions. [2022-07-21 05:15:20,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:20,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:20,108 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] [2022-07-21 05:15:20,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:15:20,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:20,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1266775069, now seen corresponding path program 1 times [2022-07-21 05:15:20,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:20,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113045107] [2022-07-21 05:15:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:20,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:20,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:20,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:20,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:20,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:20,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113045107] [2022-07-21 05:15:20,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113045107] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:20,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:20,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:20,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382991099] [2022-07-21 05:15:20,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:20,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:20,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:20,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:20,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:20,183 INFO L87 Difference]: Start difference. First operand 7056 states and 11030 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:22,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:22,395 INFO L93 Difference]: Finished difference Result 27844 states and 43824 transitions. [2022-07-21 05:15:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:15:22,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:15:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:22,477 INFO L225 Difference]: With dead ends: 27844 [2022-07-21 05:15:22,477 INFO L226 Difference]: Without dead ends: 20802 [2022-07-21 05:15:22,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:15:22,498 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 1126 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 1810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:22,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 1745 Invalid, 1810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 05:15:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20802 states. [2022-07-21 05:15:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20802 to 13825. [2022-07-21 05:15:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13825 states, 12420 states have (on average 1.5442028985507246) internal successors, (19179), 12486 states have internal predecessors, (19179), 950 states have call successors, (950), 391 states have call predecessors, (950), 454 states have return successors, (1741), 1011 states have call predecessors, (1741), 948 states have call successors, (1741) [2022-07-21 05:15:23,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13825 states to 13825 states and 21870 transitions. [2022-07-21 05:15:23,229 INFO L78 Accepts]: Start accepts. Automaton has 13825 states and 21870 transitions. Word has length 112 [2022-07-21 05:15:23,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:23,230 INFO L495 AbstractCegarLoop]: Abstraction has 13825 states and 21870 transitions. [2022-07-21 05:15:23,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:23,231 INFO L276 IsEmpty]: Start isEmpty. Operand 13825 states and 21870 transitions. [2022-07-21 05:15:23,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:23,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:23,241 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] [2022-07-21 05:15:23,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:15:23,241 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:23,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:23,242 INFO L85 PathProgramCache]: Analyzing trace with hash 496041503, now seen corresponding path program 1 times [2022-07-21 05:15:23,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:23,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952340152] [2022-07-21 05:15:23,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:23,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:23,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:23,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:23,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:23,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:23,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:23,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:23,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952340152] [2022-07-21 05:15:23,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952340152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:23,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:23,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:23,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752359242] [2022-07-21 05:15:23,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:23,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:23,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:23,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:23,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:23,405 INFO L87 Difference]: Start difference. First operand 13825 states and 21870 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:26,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:26,699 INFO L93 Difference]: Finished difference Result 54003 states and 85910 transitions. [2022-07-21 05:15:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:15:26,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:15:26,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:26,839 INFO L225 Difference]: With dead ends: 54003 [2022-07-21 05:15:26,840 INFO L226 Difference]: Without dead ends: 40192 [2022-07-21 05:15:26,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:15:26,894 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 925 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:26,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1828 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 05:15:26,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40192 states. [2022-07-21 05:15:28,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40192 to 26690. [2022-07-21 05:15:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26690 states, 23973 states have (on average 1.5396070579401826) internal successors, (36909), 24103 states have internal predecessors, (36909), 1814 states have call successors, (1814), 775 states have call predecessors, (1814), 902 states have return successors, (4127), 1939 states have call predecessors, (4127), 1812 states have call successors, (4127) [2022-07-21 05:15:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26690 states to 26690 states and 42850 transitions. [2022-07-21 05:15:28,251 INFO L78 Accepts]: Start accepts. Automaton has 26690 states and 42850 transitions. Word has length 112 [2022-07-21 05:15:28,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:28,251 INFO L495 AbstractCegarLoop]: Abstraction has 26690 states and 42850 transitions. [2022-07-21 05:15:28,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:28,252 INFO L276 IsEmpty]: Start isEmpty. Operand 26690 states and 42850 transitions. [2022-07-21 05:15:28,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:28,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:28,268 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] [2022-07-21 05:15:28,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:15:28,268 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:28,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash -498652195, now seen corresponding path program 1 times [2022-07-21 05:15:28,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:28,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654126249] [2022-07-21 05:15:28,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:28,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:28,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:28,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:28,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:28,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:28,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:28,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654126249] [2022-07-21 05:15:28,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654126249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:28,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:28,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:28,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205210252] [2022-07-21 05:15:28,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:28,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:28,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:28,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:28,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:28,343 INFO L87 Difference]: Start difference. First operand 26690 states and 42850 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:33,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:33,611 INFO L93 Difference]: Finished difference Result 103218 states and 166620 transitions. [2022-07-21 05:15:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:15:33,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:15:33,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:33,881 INFO L225 Difference]: With dead ends: 103218 [2022-07-21 05:15:33,882 INFO L226 Difference]: Without dead ends: 76542 [2022-07-21 05:15:33,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:15:33,972 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 1046 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:33,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1735 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 05:15:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76542 states. [2022-07-21 05:15:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76542 to 52995. [2022-07-21 05:15:36,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52995 states, 47718 states have (on average 1.5420386436983948) internal successors, (73583), 47976 states have internal predecessors, (73583), 3478 states have call successors, (3478), 1543 states have call predecessors, (3478), 1798 states have return successors, (10293), 3731 states have call predecessors, (10293), 3476 states have call successors, (10293) [2022-07-21 05:15:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52995 states to 52995 states and 87354 transitions. [2022-07-21 05:15:36,952 INFO L78 Accepts]: Start accepts. Automaton has 52995 states and 87354 transitions. Word has length 112 [2022-07-21 05:15:36,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:36,952 INFO L495 AbstractCegarLoop]: Abstraction has 52995 states and 87354 transitions. [2022-07-21 05:15:36,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:36,952 INFO L276 IsEmpty]: Start isEmpty. Operand 52995 states and 87354 transitions. [2022-07-21 05:15:36,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:36,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:36,983 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] [2022-07-21 05:15:36,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:15:36,983 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:36,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:36,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1084928417, now seen corresponding path program 1 times [2022-07-21 05:15:36,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:36,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886348761] [2022-07-21 05:15:36,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:36,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:36,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:37,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:37,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886348761] [2022-07-21 05:15:37,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886348761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:37,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:37,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:37,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540518790] [2022-07-21 05:15:37,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:37,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:37,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:37,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:37,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:37,065 INFO L87 Difference]: Start difference. First operand 52995 states and 87354 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:46,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:15:46,499 INFO L93 Difference]: Finished difference Result 201073 states and 333426 transitions. [2022-07-21 05:15:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:15:46,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:15:46,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:15:46,992 INFO L225 Difference]: With dead ends: 201073 [2022-07-21 05:15:46,993 INFO L226 Difference]: Without dead ends: 148092 [2022-07-21 05:15:47,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:15:47,137 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1062 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 1637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:15:47,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1198 Invalid, 1637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 05:15:47,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148092 states. [2022-07-21 05:15:52,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148092 to 105476. [2022-07-21 05:15:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105476 states, 95207 states have (on average 1.5446028128183853) internal successors, (147057), 95721 states have internal predecessors, (147057), 6678 states have call successors, (6678), 3079 states have call predecessors, (6678), 3590 states have return successors, (26871), 7187 states have call predecessors, (26871), 6676 states have call successors, (26871) [2022-07-21 05:15:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105476 states to 105476 states and 180606 transitions. [2022-07-21 05:15:53,621 INFO L78 Accepts]: Start accepts. Automaton has 105476 states and 180606 transitions. Word has length 112 [2022-07-21 05:15:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:15:53,621 INFO L495 AbstractCegarLoop]: Abstraction has 105476 states and 180606 transitions. [2022-07-21 05:15:53,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:15:53,622 INFO L276 IsEmpty]: Start isEmpty. Operand 105476 states and 180606 transitions. [2022-07-21 05:15:53,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-21 05:15:53,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:15:53,680 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] [2022-07-21 05:15:53,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:15:53,681 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:15:53,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:15:53,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1251464093, now seen corresponding path program 1 times [2022-07-21 05:15:53,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:15:53,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948077504] [2022-07-21 05:15:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:15:53,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:15:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:15:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:15:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:53,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 05:15:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 05:15:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 05:15:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:15:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:15:53,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:15:53,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948077504] [2022-07-21 05:15:53,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948077504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:15:53,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:15:53,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:15:53,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550572816] [2022-07-21 05:15:53,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:15:53,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:15:53,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:15:53,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:15:53,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:15:53,755 INFO L87 Difference]: Start difference. First operand 105476 states and 180606 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:10,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:10,731 INFO L93 Difference]: Finished difference Result 384366 states and 665716 transitions. [2022-07-21 05:16:10,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:16:10,731 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-07-21 05:16:10,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:11,987 INFO L225 Difference]: With dead ends: 384366 [2022-07-21 05:16:11,987 INFO L226 Difference]: Without dead ends: 278904 [2022-07-21 05:16:12,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:16:12,262 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 926 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 1686 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1719 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:12,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1719 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1686 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 05:16:12,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278904 states.