./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.05.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16e147b68a860b93a665f8bd36a316225675cf186d50a72fc3242bc6ec552f78 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:13:49,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:13:49,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:13:49,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:13:49,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:13:49,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:13:49,420 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:13:49,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:13:49,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:13:49,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:13:49,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:13:49,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:13:49,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:13:49,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:13:49,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:13:49,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:13:49,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:13:49,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:13:49,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:13:49,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:13:49,440 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:13:49,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:13:49,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:13:49,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:13:49,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:13:49,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:13:49,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:13:49,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:13:49,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:13:49,450 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:13:49,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:13:49,452 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:13:49,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:13:49,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:13:49,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:13:49,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:13:49,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:13:49,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:13:49,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:13:49,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:13:49,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:13:49,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:13:49,458 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:13:49,481 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:13:49,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:13:49,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:13:49,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:13:49,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:13:49,482 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:13:49,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:13:49,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:13:49,483 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:13:49,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:13:49,483 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:13:49,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:13:49,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:13:49,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:13:49,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:13:49,484 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:13:49,484 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:13:49,484 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:13:49,485 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:13:49,485 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:13:49,485 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:13:49,486 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:13:49,486 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:13:49,486 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:13:49,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:13:49,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:13:49,487 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:13:49,487 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:13:49,487 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:13:49,487 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:13:49,488 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:13:49,488 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:13:49,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:13:49,488 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16e147b68a860b93a665f8bd36a316225675cf186d50a72fc3242bc6ec552f78 [2022-07-13 18:13:49,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:13:49,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:13:49,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:13:49,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:13:49,689 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:13:49,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.05.cil-2.c [2022-07-13 18:13:49,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1420cd1ee/9a33dcdf071949c5a7b50d581c103f39/FLAG60f087fbe [2022-07-13 18:13:50,094 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:13:50,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.05.cil-2.c [2022-07-13 18:13:50,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1420cd1ee/9a33dcdf071949c5a7b50d581c103f39/FLAG60f087fbe [2022-07-13 18:13:50,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1420cd1ee/9a33dcdf071949c5a7b50d581c103f39 [2022-07-13 18:13:50,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:13:50,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:13:50,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:13:50,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:13:50,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:13:50,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e6428c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50, skipping insertion in model container [2022-07-13 18:13:50,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:13:50,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:13:50,703 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.05.cil-2.c[671,684] [2022-07-13 18:13:50,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:13:50,802 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:13:50,816 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.05.cil-2.c[671,684] [2022-07-13 18:13:50,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:13:50,873 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:13:50,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50 WrapperNode [2022-07-13 18:13:50,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:13:50,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:13:50,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:13:50,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:13:50,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,919 INFO L137 Inliner]: procedures = 38, calls = 47, calls flagged for inlining = 21, calls inlined = 21, statements flattened = 452 [2022-07-13 18:13:50,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:13:50,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:13:50,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:13:50,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:13:50,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:13:50,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:13:50,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:13:50,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:13:50,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50" (1/1) ... [2022-07-13 18:13:50,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:13:51,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:13:51,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 18:13:51,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 18:13:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:13:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-13 18:13:51,047 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-13 18:13:51,047 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 18:13:51,048 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 18:13:51,048 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 18:13:51,048 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 18:13:51,050 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 18:13:51,050 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 18:13:51,051 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 18:13:51,051 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 18:13:51,051 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 18:13:51,051 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 18:13:51,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:13:51,051 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 18:13:51,051 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 18:13:51,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:13:51,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:13:51,112 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:13:51,114 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:13:51,502 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:13:51,508 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:13:51,508 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-13 18:13:51,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:13:51 BoogieIcfgContainer [2022-07-13 18:13:51,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:13:51,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:13:51,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:13:51,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:13:51,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:13:50" (1/3) ... [2022-07-13 18:13:51,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fb72b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:13:51, skipping insertion in model container [2022-07-13 18:13:51,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:13:50" (2/3) ... [2022-07-13 18:13:51,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fb72b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:13:51, skipping insertion in model container [2022-07-13 18:13:51,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:13:51" (3/3) ... [2022-07-13 18:13:51,518 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.05.cil-2.c [2022-07-13 18:13:51,528 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:13:51,528 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 18:13:51,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:13:51,573 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@76c36df1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e7459a3 [2022-07-13 18:13:51,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 18:13:51,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 185 states have (on average 1.6324324324324324) internal successors, (302), 189 states have internal predecessors, (302), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-13 18:13:51,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:13:51,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:13:51,590 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] [2022-07-13 18:13:51,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:13:51,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:13:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2097421190, now seen corresponding path program 1 times [2022-07-13 18:13:51,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:13:51,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527904995] [2022-07-13 18:13:51,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:13:51,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:13:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:51,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:13:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:51,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:13:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:51,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 18:13:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:51,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:13:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:51,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:13:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:13:51,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:13:51,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527904995] [2022-07-13 18:13:51,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527904995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:13:51,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:13:51,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:13:51,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152160866] [2022-07-13 18:13:51,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:13:51,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:13:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:13:51,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:13:51,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:13:51,943 INFO L87 Difference]: Start difference. First operand has 215 states, 185 states have (on average 1.6324324324324324) internal successors, (302), 189 states have internal predecessors, (302), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:13:53,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:13:53,133 INFO L93 Difference]: Finished difference Result 749 states and 1221 transitions. [2022-07-13 18:13:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 18:13:53,136 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 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 101 [2022-07-13 18:13:53,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:13:53,148 INFO L225 Difference]: With dead ends: 749 [2022-07-13 18:13:53,148 INFO L226 Difference]: Without dead ends: 539 [2022-07-13 18:13:53,152 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 [2022-07-13 18:13:53,154 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 769 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:13:53,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 950 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:13:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-07-13 18:13:53,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 408. [2022-07-13 18:13:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 359 states have (on average 1.5571030640668524) internal successors, (559), 362 states have internal predecessors, (559), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2022-07-13 18:13:53,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 630 transitions. [2022-07-13 18:13:53,244 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 630 transitions. Word has length 101 [2022-07-13 18:13:53,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:13:53,245 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 630 transitions. [2022-07-13 18:13:53,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:13:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 630 transitions. [2022-07-13 18:13:53,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:13:53,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:13:53,250 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] [2022-07-13 18:13:53,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:13:53,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:13:53,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:13:53,251 INFO L85 PathProgramCache]: Analyzing trace with hash 413606018, now seen corresponding path program 1 times [2022-07-13 18:13:53,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:13:53,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463965034] [2022-07-13 18:13:53,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:13:53,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:13:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:53,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:13:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:53,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:13:53,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:53,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 18:13:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:53,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:13:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:53,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:13:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:13:53,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:13:53,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463965034] [2022-07-13 18:13:53,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463965034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:13:53,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:13:53,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:13:53,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340977430] [2022-07-13 18:13:53,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:13:53,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:13:53,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:13:53,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:13:53,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:13:53,371 INFO L87 Difference]: Start difference. First operand 408 states and 630 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:13:54,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:13:54,801 INFO L93 Difference]: Finished difference Result 1203 states and 1882 transitions. [2022-07-13 18:13:54,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:13:54,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 101 [2022-07-13 18:13:54,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:13:54,808 INFO L225 Difference]: With dead ends: 1203 [2022-07-13 18:13:54,809 INFO L226 Difference]: Without dead ends: 808 [2022-07-13 18:13:54,811 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 [2022-07-13 18:13:54,812 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 764 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1592 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:13:54,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 1592 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 18:13:54,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-07-13 18:13:54,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 594. [2022-07-13 18:13:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 524 states have (on average 1.549618320610687) internal successors, (812), 528 states have internal predecessors, (812), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-07-13 18:13:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 913 transitions. [2022-07-13 18:13:54,854 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 913 transitions. Word has length 101 [2022-07-13 18:13:54,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:13:54,855 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 913 transitions. [2022-07-13 18:13:54,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:13:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 913 transitions. [2022-07-13 18:13:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:13:54,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:13:54,859 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] [2022-07-13 18:13:54,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:13:54,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:13:54,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:13:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2004878460, now seen corresponding path program 1 times [2022-07-13 18:13:54,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:13:54,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197679956] [2022-07-13 18:13:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:13:54,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:13:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:54,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:13:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:54,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:13:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 18:13:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:54,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:13:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:54,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:13:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:54,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:13:54,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:13:54,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197679956] [2022-07-13 18:13:54,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197679956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:13:54,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:13:54,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:13:54,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322435776] [2022-07-13 18:13:54,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:13:54,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:13:54,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:13:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:13:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:13:54,971 INFO L87 Difference]: Start difference. First operand 594 states and 913 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:13:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:13:56,266 INFO L93 Difference]: Finished difference Result 1892 states and 2953 transitions. [2022-07-13 18:13:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:13:56,266 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 101 [2022-07-13 18:13:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:13:56,274 INFO L225 Difference]: With dead ends: 1892 [2022-07-13 18:13:56,274 INFO L226 Difference]: Without dead ends: 1311 [2022-07-13 18:13:56,276 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 [2022-07-13 18:13:56,277 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 761 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:13:56,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1584 Invalid, 1627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1559 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:13:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1311 states. [2022-07-13 18:13:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1311 to 967. [2022-07-13 18:13:56,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 967 states, 855 states have (on average 1.5426900584795322) internal successors, (1319), 861 states have internal predecessors, (1319), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2022-07-13 18:13:56,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1484 transitions. [2022-07-13 18:13:56,338 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1484 transitions. Word has length 101 [2022-07-13 18:13:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:13:56,339 INFO L495 AbstractCegarLoop]: Abstraction has 967 states and 1484 transitions. [2022-07-13 18:13:56,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:13:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1484 transitions. [2022-07-13 18:13:56,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:13:56,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:13:56,342 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] [2022-07-13 18:13:56,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:13:56,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:13:56,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:13:56,343 INFO L85 PathProgramCache]: Analyzing trace with hash 410957890, now seen corresponding path program 1 times [2022-07-13 18:13:56,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:13:56,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691577757] [2022-07-13 18:13:56,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:13:56,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:13:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:13:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:56,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:13:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 18:13:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:56,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:13:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:56,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:13:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:13:56,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:13:56,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691577757] [2022-07-13 18:13:56,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691577757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:13:56,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:13:56,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:13:56,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168796624] [2022-07-13 18:13:56,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:13:56,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:13:56,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:13:56,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:13:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:13:56,440 INFO L87 Difference]: Start difference. First operand 967 states and 1484 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:13:57,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:13:57,775 INFO L93 Difference]: Finished difference Result 3221 states and 5012 transitions. [2022-07-13 18:13:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:13:57,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 101 [2022-07-13 18:13:57,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:13:57,784 INFO L225 Difference]: With dead ends: 3221 [2022-07-13 18:13:57,784 INFO L226 Difference]: Without dead ends: 2267 [2022-07-13 18:13:57,787 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 [2022-07-13 18:13:57,803 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 757 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 1580 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:13:57,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 1580 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:13:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-07-13 18:13:57,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1714. [2022-07-13 18:13:57,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1518 states have (on average 1.5368906455862978) internal successors, (2333), 1528 states have internal predecessors, (2333), 133 states have call successors, (133), 55 states have call predecessors, (133), 62 states have return successors, (166), 138 states have call predecessors, (166), 131 states have call successors, (166) [2022-07-13 18:13:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2632 transitions. [2022-07-13 18:13:57,919 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2632 transitions. Word has length 101 [2022-07-13 18:13:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:13:57,920 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2632 transitions. [2022-07-13 18:13:57,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:13:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2632 transitions. [2022-07-13 18:13:57,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:13:57,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:13:57,922 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] [2022-07-13 18:13:57,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:13:57,922 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:13:57,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:13:57,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1735814084, now seen corresponding path program 1 times [2022-07-13 18:13:57,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:13:57,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332772826] [2022-07-13 18:13:57,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:13:57,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:13:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:13:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:57,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:13:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 18:13:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:13:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:13:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:13:58,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:13:58,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332772826] [2022-07-13 18:13:58,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332772826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:13:58,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:13:58,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:13:58,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373376952] [2022-07-13 18:13:58,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:13:58,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:13:58,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:13:58,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:13:58,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:13:58,033 INFO L87 Difference]: Start difference. First operand 1714 states and 2632 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:13:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:13:59,436 INFO L93 Difference]: Finished difference Result 5878 states and 9146 transitions. [2022-07-13 18:13:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:13:59,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 101 [2022-07-13 18:13:59,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:13:59,454 INFO L225 Difference]: With dead ends: 5878 [2022-07-13 18:13:59,454 INFO L226 Difference]: Without dead ends: 4177 [2022-07-13 18:13:59,459 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 [2022-07-13 18:13:59,460 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 756 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:13:59,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1574 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:13:59,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2022-07-13 18:13:59,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 3213. [2022-07-13 18:13:59,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3213 states, 2849 states have (on average 1.5328185328185329) internal successors, (4367), 2867 states have internal predecessors, (4367), 245 states have call successors, (245), 103 states have call predecessors, (245), 118 states have return successors, (340), 258 states have call predecessors, (340), 243 states have call successors, (340) [2022-07-13 18:13:59,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 4952 transitions. [2022-07-13 18:13:59,598 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 4952 transitions. Word has length 101 [2022-07-13 18:13:59,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:13:59,598 INFO L495 AbstractCegarLoop]: Abstraction has 3213 states and 4952 transitions. [2022-07-13 18:13:59,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:13:59,599 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 4952 transitions. [2022-07-13 18:13:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:13:59,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:13:59,601 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] [2022-07-13 18:13:59,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:13:59,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:13:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:13:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash -992395262, now seen corresponding path program 1 times [2022-07-13 18:13:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:13:59,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67934576] [2022-07-13 18:13:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:13:59,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:13:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:13:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:13:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:59,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 18:13:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:13:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:13:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:13:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:13:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:13:59,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67934576] [2022-07-13 18:13:59,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67934576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:13:59,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:13:59,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:13:59,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383252378] [2022-07-13 18:13:59,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:13:59,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:13:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:13:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:13:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:13:59,670 INFO L87 Difference]: Start difference. First operand 3213 states and 4952 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:14:01,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:14:01,321 INFO L93 Difference]: Finished difference Result 12440 states and 19334 transitions. [2022-07-13 18:14:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:14:01,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 101 [2022-07-13 18:14:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:14:01,366 INFO L225 Difference]: With dead ends: 12440 [2022-07-13 18:14:01,366 INFO L226 Difference]: Without dead ends: 9240 [2022-07-13 18:14:01,380 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 [2022-07-13 18:14:01,380 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 1023 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1352 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:14:01,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 1080 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1352 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 18:14:01,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9240 states. [2022-07-13 18:14:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9240 to 6193. [2022-07-13 18:14:01,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6193 states, 5509 states have (on average 1.534761299691414) internal successors, (8455), 5543 states have internal predecessors, (8455), 453 states have call successors, (453), 199 states have call predecessors, (453), 230 states have return successors, (726), 482 states have call predecessors, (726), 451 states have call successors, (726) [2022-07-13 18:14:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6193 states to 6193 states and 9634 transitions. [2022-07-13 18:14:01,745 INFO L78 Accepts]: Start accepts. Automaton has 6193 states and 9634 transitions. Word has length 101 [2022-07-13 18:14:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:14:01,745 INFO L495 AbstractCegarLoop]: Abstraction has 6193 states and 9634 transitions. [2022-07-13 18:14:01,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:14:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 6193 states and 9634 transitions. [2022-07-13 18:14:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:14:01,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:14:01,751 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] [2022-07-13 18:14:01,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:14:01,751 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:14:01,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:14:01,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2134897728, now seen corresponding path program 1 times [2022-07-13 18:14:01,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:14:01,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012065459] [2022-07-13 18:14:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:14:01,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:14:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:14:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:01,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:14:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:01,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 18:14:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:01,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:14:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:14:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:14:01,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:14:01,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012065459] [2022-07-13 18:14:01,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012065459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:14:01,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:14:01,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:14:01,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066023017] [2022-07-13 18:14:01,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:14:01,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:14:01,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:14:01,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:14:01,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:14:01,831 INFO L87 Difference]: Start difference. First operand 6193 states and 9634 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:14:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:14:03,733 INFO L93 Difference]: Finished difference Result 23806 states and 37274 transitions. [2022-07-13 18:14:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:14:03,733 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 101 [2022-07-13 18:14:03,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:14:03,813 INFO L225 Difference]: With dead ends: 23806 [2022-07-13 18:14:03,813 INFO L226 Difference]: Without dead ends: 17626 [2022-07-13 18:14:03,832 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 [2022-07-13 18:14:03,834 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 792 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:14:03,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1623 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 18:14:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17626 states. [2022-07-13 18:14:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17626 to 11814. [2022-07-13 18:14:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11814 states, 10506 states have (on average 1.529126213592233) internal successors, (16065), 10572 states have internal predecessors, (16065), 853 states have call successors, (853), 391 states have call predecessors, (853), 454 states have return successors, (1644), 914 states have call predecessors, (1644), 851 states have call successors, (1644) [2022-07-13 18:14:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11814 states to 11814 states and 18562 transitions. [2022-07-13 18:14:04,364 INFO L78 Accepts]: Start accepts. Automaton has 11814 states and 18562 transitions. Word has length 101 [2022-07-13 18:14:04,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:14:04,366 INFO L495 AbstractCegarLoop]: Abstraction has 11814 states and 18562 transitions. [2022-07-13 18:14:04,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:14:04,367 INFO L276 IsEmpty]: Start isEmpty. Operand 11814 states and 18562 transitions. [2022-07-13 18:14:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:14:04,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:14:04,375 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] [2022-07-13 18:14:04,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:14:04,375 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:14:04,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:14:04,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1894657982, now seen corresponding path program 1 times [2022-07-13 18:14:04,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:14:04,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62620833] [2022-07-13 18:14:04,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:14:04,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:14:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:14:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:04,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:14:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:04,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 18:14:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:14:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:04,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:14:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:14:04,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:14:04,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62620833] [2022-07-13 18:14:04,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62620833] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:14:04,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:14:04,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:14:04,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274942484] [2022-07-13 18:14:04,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:14:04,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:14:04,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:14:04,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:14:04,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:14:04,446 INFO L87 Difference]: Start difference. First operand 11814 states and 18562 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:14:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:14:06,876 INFO L93 Difference]: Finished difference Result 44985 states and 71096 transitions. [2022-07-13 18:14:06,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:14:06,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 101 [2022-07-13 18:14:06,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:14:06,983 INFO L225 Difference]: With dead ends: 44985 [2022-07-13 18:14:06,983 INFO L226 Difference]: Without dead ends: 33184 [2022-07-13 18:14:07,024 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 [2022-07-13 18:14:07,025 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 884 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1503 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:14:07,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1546 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1503 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:14:07,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33184 states. [2022-07-13 18:14:08,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33184 to 23343. [2022-07-13 18:14:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23343 states, 20819 states have (on average 1.5318218934627024) internal successors, (31891), 20949 states have internal predecessors, (31891), 1621 states have call successors, (1621), 775 states have call predecessors, (1621), 902 states have return successors, (3934), 1746 states have call predecessors, (3934), 1619 states have call successors, (3934) [2022-07-13 18:14:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23343 states to 23343 states and 37446 transitions. [2022-07-13 18:14:08,297 INFO L78 Accepts]: Start accepts. Automaton has 23343 states and 37446 transitions. Word has length 101 [2022-07-13 18:14:08,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:14:08,298 INFO L495 AbstractCegarLoop]: Abstraction has 23343 states and 37446 transitions. [2022-07-13 18:14:08,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:14:08,298 INFO L276 IsEmpty]: Start isEmpty. Operand 23343 states and 37446 transitions. [2022-07-13 18:14:08,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:14:08,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:14:08,312 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] [2022-07-13 18:14:08,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:14:08,313 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:14:08,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:14:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1055624320, now seen corresponding path program 1 times [2022-07-13 18:14:08,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:14:08,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365656638] [2022-07-13 18:14:08,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:14:08,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:14:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:14:08,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:08,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:14:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 18:14:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:08,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:14:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:08,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:14:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:08,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:14:08,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:14:08,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365656638] [2022-07-13 18:14:08,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365656638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:14:08,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:14:08,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:14:08,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364145660] [2022-07-13 18:14:08,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:14:08,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:14:08,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:14:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:14:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:14:08,388 INFO L87 Difference]: Start difference. First operand 23343 states and 37446 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:14:12,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:14:12,376 INFO L93 Difference]: Finished difference Result 87056 states and 140462 transitions. [2022-07-13 18:14:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:14:12,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 101 [2022-07-13 18:14:12,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:14:12,702 INFO L225 Difference]: With dead ends: 87056 [2022-07-13 18:14:12,702 INFO L226 Difference]: Without dead ends: 63726 [2022-07-13 18:14:12,795 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 [2022-07-13 18:14:12,797 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 844 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:14:12,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1541 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:14:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63726 states. [2022-07-13 18:14:15,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63726 to 46336. [2022-07-13 18:14:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46336 states, 41444 states have (on average 1.5347215519737476) internal successors, (63605), 41702 states have internal predecessors, (63605), 3093 states have call successors, (3093), 1543 states have call predecessors, (3093), 1798 states have return successors, (9908), 3346 states have call predecessors, (9908), 3091 states have call successors, (9908) [2022-07-13 18:14:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46336 states to 46336 states and 76606 transitions. [2022-07-13 18:14:15,398 INFO L78 Accepts]: Start accepts. Automaton has 46336 states and 76606 transitions. Word has length 101 [2022-07-13 18:14:15,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:14:15,398 INFO L495 AbstractCegarLoop]: Abstraction has 46336 states and 76606 transitions. [2022-07-13 18:14:15,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:14:15,399 INFO L276 IsEmpty]: Start isEmpty. Operand 46336 states and 76606 transitions. [2022-07-13 18:14:15,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:14:15,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:14:15,435 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] [2022-07-13 18:14:15,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:14:15,436 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:14:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:14:15,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1028558718, now seen corresponding path program 1 times [2022-07-13 18:14:15,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:14:15,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627866406] [2022-07-13 18:14:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:14:15,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:14:15,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:15,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:14:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:15,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:14:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 18:14:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:15,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:14:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:14:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:14:15,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:14:15,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627866406] [2022-07-13 18:14:15,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627866406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:14:15,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:14:15,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:14:15,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321065888] [2022-07-13 18:14:15,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:14:15,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:14:15,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:14:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:14:15,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:14:15,524 INFO L87 Difference]: Start difference. First operand 46336 states and 76606 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:14:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:14:23,035 INFO L93 Difference]: Finished difference Result 168831 states and 281252 transitions. [2022-07-13 18:14:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:14:23,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 101 [2022-07-13 18:14:23,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:14:23,745 INFO L225 Difference]: With dead ends: 168831 [2022-07-13 18:14:23,746 INFO L226 Difference]: Without dead ends: 122508 [2022-07-13 18:14:23,908 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 [2022-07-13 18:14:23,909 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 760 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:14:23,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 1564 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1616 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 18:14:24,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122508 states. [2022-07-13 18:14:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122508 to 92193. [2022-07-13 18:14:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92193 states, 82693 states have (on average 1.537723870218761) internal successors, (127159), 83207 states have internal predecessors, (127159), 5909 states have call successors, (5909), 3079 states have call predecessors, (5909), 3590 states have return successors, (26102), 6418 states have call predecessors, (26102), 5907 states have call successors, (26102) [2022-07-13 18:14:30,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92193 states to 92193 states and 159170 transitions. [2022-07-13 18:14:30,045 INFO L78 Accepts]: Start accepts. Automaton has 92193 states and 159170 transitions. Word has length 101 [2022-07-13 18:14:30,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:14:30,046 INFO L495 AbstractCegarLoop]: Abstraction has 92193 states and 159170 transitions. [2022-07-13 18:14:30,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:14:30,046 INFO L276 IsEmpty]: Start isEmpty. Operand 92193 states and 159170 transitions. [2022-07-13 18:14:30,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:14:30,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:14:30,121 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] [2022-07-13 18:14:30,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:14:30,121 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 18:14:30,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:14:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1189071680, now seen corresponding path program 1 times [2022-07-13 18:14:30,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:14:30,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309702361] [2022-07-13 18:14:30,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:14:30,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:14:30,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:30,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 18:14:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-13 18:14:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:30,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-13 18:14:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:30,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 18:14:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:30,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 18:14:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:14:30,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:14:30,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:14:30,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309702361] [2022-07-13 18:14:30,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309702361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:14:30,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:14:30,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:14:30,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302720039] [2022-07-13 18:14:30,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:14:30,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 18:14:30,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:14:30,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 18:14:30,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 18:14:30,227 INFO L87 Difference]: Start difference. First operand 92193 states and 159170 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 18:14:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:14:44,990 INFO L93 Difference]: Finished difference Result 327502 states and 572634 transitions. [2022-07-13 18:14:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:14:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 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 101 [2022-07-13 18:14:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:14:46,213 INFO L225 Difference]: With dead ends: 327502 [2022-07-13 18:14:46,214 INFO L226 Difference]: Without dead ends: 235322 [2022-07-13 18:14:46,728 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 [2022-07-13 18:14:46,728 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 764 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 18:14:46,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 1510 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 18:14:46,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235322 states.