./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label49+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 22315e954f625a92454f179210263631b555d33fa4f07d11e85c64617a347172 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 19:45:31,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 19:45:31,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 19:45:31,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 19:45:31,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 19:45:31,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 19:45:31,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 19:45:31,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 19:45:31,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 19:45:31,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 19:45:31,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 19:45:31,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 19:45:31,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 19:45:31,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 19:45:31,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 19:45:31,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 19:45:31,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 19:45:31,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 19:45:31,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 19:45:31,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 19:45:31,962 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 19:45:31,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 19:45:31,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 19:45:31,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 19:45:31,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 19:45:31,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 19:45:31,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 19:45:31,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 19:45:31,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 19:45:31,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 19:45:31,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 19:45:31,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 19:45:31,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 19:45:31,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 19:45:31,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 19:45:31,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 19:45:31,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 19:45:31,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 19:45:31,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 19:45:31,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 19:45:31,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 19:45:31,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 19:45:31,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 19:45:32,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 19:45:32,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 19:45:32,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 19:45:32,014 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 19:45:32,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 19:45:32,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 19:45:32,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 19:45:32,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 19:45:32,015 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 19:45:32,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 19:45:32,016 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 19:45:32,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 19:45:32,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 19:45:32,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 19:45:32,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 19:45:32,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 19:45:32,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 19:45:32,018 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 19:45:32,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 19:45:32,018 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 19:45:32,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 19:45:32,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 19:45:32,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 19:45:32,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 19:45:32,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:45:32,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 19:45:32,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 19:45:32,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 19:45:32,020 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 19:45:32,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 19:45:32,021 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 19:45:32,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 19:45:32,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 19:45:32,021 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22315e954f625a92454f179210263631b555d33fa4f07d11e85c64617a347172 [2022-07-22 19:45:32,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 19:45:32,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 19:45:32,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 19:45:32,269 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 19:45:32,269 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 19:45:32,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c [2022-07-22 19:45:32,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae907b1e8/a76372fafa34489da662b5920ec42ce2/FLAG492222550 [2022-07-22 19:45:33,114 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 19:45:33,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c [2022-07-22 19:45:33,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae907b1e8/a76372fafa34489da662b5920ec42ce2/FLAG492222550 [2022-07-22 19:45:33,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae907b1e8/a76372fafa34489da662b5920ec42ce2 [2022-07-22 19:45:33,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 19:45:33,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 19:45:33,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 19:45:33,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 19:45:33,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 19:45:33,316 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:45:33" (1/1) ... [2022-07-22 19:45:33,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191b7423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:33, skipping insertion in model container [2022-07-22 19:45:33,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 07:45:33" (1/1) ... [2022-07-22 19:45:33,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 19:45:33,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 19:45:35,082 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2022-07-22 19:45:35,109 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2022-07-22 19:45:35,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:45:35,317 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 19:45:36,083 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2022-07-22 19:45:36,088 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2022-07-22 19:45:36,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 19:45:36,169 INFO L208 MainTranslator]: Completed translation [2022-07-22 19:45:36,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36 WrapperNode [2022-07-22 19:45:36,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 19:45:36,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 19:45:36,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 19:45:36,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 19:45:36,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36" (1/1) ... [2022-07-22 19:45:36,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36" (1/1) ... [2022-07-22 19:45:36,608 INFO L137 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12798 [2022-07-22 19:45:36,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 19:45:36,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 19:45:36,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 19:45:36,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 19:45:36,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36" (1/1) ... [2022-07-22 19:45:36,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36" (1/1) ... [2022-07-22 19:45:36,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36" (1/1) ... [2022-07-22 19:45:36,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36" (1/1) ... [2022-07-22 19:45:36,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36" (1/1) ... [2022-07-22 19:45:36,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36" (1/1) ... [2022-07-22 19:45:37,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36" (1/1) ... [2022-07-22 19:45:37,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 19:45:37,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 19:45:37,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 19:45:37,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 19:45:37,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36" (1/1) ... [2022-07-22 19:45:37,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 19:45:37,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:45:37,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 19:45:37,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 19:45:37,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 19:45:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-22 19:45:37,227 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-22 19:45:37,227 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 19:45:37,227 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 19:45:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-22 19:45:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-22 19:45:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-22 19:45:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-22 19:45:37,228 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-22 19:45:37,228 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-22 19:45:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-22 19:45:37,229 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-22 19:45:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-22 19:45:37,229 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-22 19:45:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 19:45:37,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 19:45:37,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 19:45:37,391 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 19:45:37,393 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 19:45:43,112 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 19:45:43,137 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 19:45:43,138 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-22 19:45:43,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:45:43 BoogieIcfgContainer [2022-07-22 19:45:43,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 19:45:43,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 19:45:43,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 19:45:43,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 19:45:43,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 07:45:33" (1/3) ... [2022-07-22 19:45:43,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1617583a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:45:43, skipping insertion in model container [2022-07-22 19:45:43,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 07:45:36" (2/3) ... [2022-07-22 19:45:43,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1617583a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 07:45:43, skipping insertion in model container [2022-07-22 19:45:43,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 07:45:43" (3/3) ... [2022-07-22 19:45:43,149 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.05.cil-2.c [2022-07-22 19:45:43,166 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 19:45:43,167 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 19:45:43,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 19:45:43,259 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@204eb00a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@26b7618d [2022-07-22 19:45:43,260 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 19:45:43,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 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) [2022-07-22 19:45:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:45:43,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:45:43,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:45:43,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:45:43,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:45:43,289 INFO L85 PathProgramCache]: Analyzing trace with hash -645844934, now seen corresponding path program 1 times [2022-07-22 19:45:43,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:45:43,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622854557] [2022-07-22 19:45:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:45:43,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:45:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:43,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:45:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:43,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:45:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:45:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:43,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:45:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:43,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:45:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:43,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:45:43,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:45:43,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622854557] [2022-07-22 19:45:43,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622854557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:45:43,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:45:43,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 19:45:43,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013007112] [2022-07-22 19:45:43,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:45:43,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 19:45:43,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:45:43,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 19:45:43,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 19:45:43,615 INFO L87 Difference]: Start difference. First operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 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 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:45:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:45:44,592 INFO L93 Difference]: Finished difference Result 4852 states and 8953 transitions. [2022-07-22 19:45:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 19:45:44,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2022-07-22 19:45:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:45:44,619 INFO L225 Difference]: With dead ends: 4852 [2022-07-22 19:45:44,619 INFO L226 Difference]: Without dead ends: 2395 [2022-07-22 19:45:44,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:45:44,635 INFO L413 NwaCegarLoop]: 4373 mSDtfsCounter, 521 mSDsluCounter, 12301 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 16674 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:45:44,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 16674 Invalid, 402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 19:45:44,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2022-07-22 19:45:44,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2330. [2022-07-22 19:45:44,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2301 states have (on average 1.841373315949587) internal successors, (4237), 2304 states have internal predecessors, (4237), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-22 19:45:44,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 4277 transitions. [2022-07-22 19:45:44,767 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 4277 transitions. Word has length 102 [2022-07-22 19:45:44,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:45:44,768 INFO L495 AbstractCegarLoop]: Abstraction has 2330 states and 4277 transitions. [2022-07-22 19:45:44,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 19:45:44,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 4277 transitions. [2022-07-22 19:45:44,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:45:44,777 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:45:44,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:45:44,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 19:45:44,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:45:44,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:45:44,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1294737080, now seen corresponding path program 1 times [2022-07-22 19:45:44,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:45:44,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577015863] [2022-07-22 19:45:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:45:44,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:45:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:45:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:44,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:45:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:44,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:45:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:44,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:45:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:45:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:45:44,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:45:44,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577015863] [2022-07-22 19:45:44,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577015863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:45:44,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:45:44,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:45:44,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345255632] [2022-07-22 19:45:44,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:45:44,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:45:44,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:45:44,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:45:44,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:45:44,966 INFO L87 Difference]: Start difference. First operand 2330 states and 4277 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-22 19:45:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:45:46,242 INFO L93 Difference]: Finished difference Result 2856 states and 5108 transitions. [2022-07-22 19:45:46,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:45:46,243 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2022-07-22 19:45:46,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:45:46,258 INFO L225 Difference]: With dead ends: 2856 [2022-07-22 19:45:46,259 INFO L226 Difference]: Without dead ends: 2660 [2022-07-22 19:45:46,261 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 [2022-07-22 19:45:46,263 INFO L413 NwaCegarLoop]: 4328 mSDtfsCounter, 4721 mSDsluCounter, 12415 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 16743 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:45:46,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4733 Valid, 16743 Invalid, 1093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:45:46,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-07-22 19:45:46,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2529. [2022-07-22 19:45:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2479 states have (on average 1.8217022993142395) internal successors, (4516), 2483 states have internal predecessors, (4516), 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) [2022-07-22 19:45:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4587 transitions. [2022-07-22 19:45:46,335 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4587 transitions. Word has length 102 [2022-07-22 19:45:46,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:45:46,336 INFO L495 AbstractCegarLoop]: Abstraction has 2529 states and 4587 transitions. [2022-07-22 19:45:46,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-22 19:45:46,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4587 transitions. [2022-07-22 19:45:46,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:45:46,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:45:46,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:45:46,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 19:45:46,339 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:45:46,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:45:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash -389078092, now seen corresponding path program 1 times [2022-07-22 19:45:46,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:45:46,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411582954] [2022-07-22 19:45:46,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:45:46,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:45:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:46,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:45:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:46,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:45:46,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:46,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:45:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:46,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:45:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:46,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:45:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:46,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:45:46,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:45:46,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411582954] [2022-07-22 19:45:46,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411582954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:45:46,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:45:46,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:45:46,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218766923] [2022-07-22 19:45:46,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:45:46,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:45:46,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:45:46,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:45:46,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:45:46,454 INFO L87 Difference]: Start difference. First operand 2529 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:45:48,097 INFO L93 Difference]: Finished difference Result 3324 states and 5839 transitions. [2022-07-22 19:45:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:45:48,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-22 19:45:48,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:45:48,112 INFO L225 Difference]: With dead ends: 3324 [2022-07-22 19:45:48,113 INFO L226 Difference]: Without dead ends: 2929 [2022-07-22 19:45:48,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 19:45:48,117 INFO L413 NwaCegarLoop]: 4485 mSDtfsCounter, 4725 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1551 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4737 SdHoareTripleChecker+Valid, 21376 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 19:45:48,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4737 Valid, 21376 Invalid, 1621 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 1551 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 19:45:48,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2022-07-22 19:45:48,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2715. [2022-07-22 19:45:48,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2715 states, 2644 states have (on average 1.8037065052950076) internal successors, (4769), 2649 states have internal predecessors, (4769), 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) [2022-07-22 19:45:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2715 states to 2715 states and 4870 transitions. [2022-07-22 19:45:48,278 INFO L78 Accepts]: Start accepts. Automaton has 2715 states and 4870 transitions. Word has length 102 [2022-07-22 19:45:48,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:45:48,278 INFO L495 AbstractCegarLoop]: Abstraction has 2715 states and 4870 transitions. [2022-07-22 19:45:48,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2715 states and 4870 transitions. [2022-07-22 19:45:48,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:45:48,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:45:48,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:45:48,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 19:45:48,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:45:48,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:45:48,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1487404726, now seen corresponding path program 1 times [2022-07-22 19:45:48,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:45:48,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639997953] [2022-07-22 19:45:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:45:48,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:45:48,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:45:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:45:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:48,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:45:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:48,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:45:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:48,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:45:48,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:48,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:45:48,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:45:48,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639997953] [2022-07-22 19:45:48,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639997953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:45:48,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:45:48,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:45:48,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348602970] [2022-07-22 19:45:48,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:45:48,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:45:48,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:45:48,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:45:48,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:45:48,392 INFO L87 Difference]: Start difference. First operand 2715 states and 4870 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:49,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:45:49,874 INFO L93 Difference]: Finished difference Result 4012 states and 6910 transitions. [2022-07-22 19:45:49,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:45:49,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-22 19:45:49,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:45:49,893 INFO L225 Difference]: With dead ends: 4012 [2022-07-22 19:45:49,894 INFO L226 Difference]: Without dead ends: 3431 [2022-07-22 19:45:49,899 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 [2022-07-22 19:45:49,910 INFO L413 NwaCegarLoop]: 4473 mSDtfsCounter, 4719 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4731 SdHoareTripleChecker+Valid, 21364 SdHoareTripleChecker+Invalid, 1612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:45:49,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4731 Valid, 21364 Invalid, 1612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:45:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2022-07-22 19:45:50,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3091. [2022-07-22 19:45:50,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3091 states, 2978 states have (on average 1.77367360644728) internal successors, (5282), 2985 states have internal predecessors, (5282), 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) [2022-07-22 19:45:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3091 states to 3091 states and 5447 transitions. [2022-07-22 19:45:50,044 INFO L78 Accepts]: Start accepts. Automaton has 3091 states and 5447 transitions. Word has length 102 [2022-07-22 19:45:50,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:45:50,044 INFO L495 AbstractCegarLoop]: Abstraction has 3091 states and 5447 transitions. [2022-07-22 19:45:50,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:50,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3091 states and 5447 transitions. [2022-07-22 19:45:50,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:45:50,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:45:50,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:45:50,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 19:45:50,047 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:45:50,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:45:50,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1482706376, now seen corresponding path program 1 times [2022-07-22 19:45:50,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:45:50,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124511002] [2022-07-22 19:45:50,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:45:50,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:45:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:50,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:45:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:50,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:45:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:50,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:45:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:45:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:45:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:50,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:45:50,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:45:50,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124511002] [2022-07-22 19:45:50,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124511002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:45:50,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:45:50,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:45:50,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159511088] [2022-07-22 19:45:50,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:45:50,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:45:50,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:45:50,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:45:50,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:45:50,166 INFO L87 Difference]: Start difference. First operand 3091 states and 5447 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:51,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:45:51,625 INFO L93 Difference]: Finished difference Result 5346 states and 8979 transitions. [2022-07-22 19:45:51,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:45:51,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-22 19:45:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:45:51,705 INFO L225 Difference]: With dead ends: 5346 [2022-07-22 19:45:51,706 INFO L226 Difference]: Without dead ends: 4389 [2022-07-22 19:45:51,710 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 [2022-07-22 19:45:51,711 INFO L413 NwaCegarLoop]: 4468 mSDtfsCounter, 4718 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 21359 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:45:51,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4730 Valid, 21359 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1532 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:45:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4389 states. [2022-07-22 19:45:51,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4389 to 3844. [2022-07-22 19:45:51,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3844 states, 3647 states have (on average 1.7296408006580752) internal successors, (6308), 3658 states have internal predecessors, (6308), 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) [2022-07-22 19:45:51,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 6607 transitions. [2022-07-22 19:45:51,860 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 6607 transitions. Word has length 102 [2022-07-22 19:45:51,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:45:51,861 INFO L495 AbstractCegarLoop]: Abstraction has 3844 states and 6607 transitions. [2022-07-22 19:45:51,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 6607 transitions. [2022-07-22 19:45:51,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:45:51,864 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:45:51,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:45:51,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 19:45:51,865 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:45:51,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:45:51,865 INFO L85 PathProgramCache]: Analyzing trace with hash 84051574, now seen corresponding path program 1 times [2022-07-22 19:45:51,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:45:51,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58515062] [2022-07-22 19:45:51,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:45:51,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:45:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:51,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:45:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:51,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:45:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:51,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:45:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:51,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:45:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:51,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:45:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:45:51,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:45:51,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58515062] [2022-07-22 19:45:51,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58515062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:45:51,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:45:51,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:45:51,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192327453] [2022-07-22 19:45:51,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:45:51,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:45:51,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:45:51,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:45:51,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:45:51,957 INFO L87 Difference]: Start difference. First operand 3844 states and 6607 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:53,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:45:53,581 INFO L93 Difference]: Finished difference Result 8013 states and 13133 transitions. [2022-07-22 19:45:53,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 19:45:53,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-22 19:45:53,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:45:53,612 INFO L225 Difference]: With dead ends: 8013 [2022-07-22 19:45:53,612 INFO L226 Difference]: Without dead ends: 6303 [2022-07-22 19:45:53,621 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 [2022-07-22 19:45:53,622 INFO L413 NwaCegarLoop]: 4463 mSDtfsCounter, 4717 mSDsluCounter, 16891 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4729 SdHoareTripleChecker+Valid, 21354 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:45:53,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4729 Valid, 21354 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:45:53,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6303 states. [2022-07-22 19:45:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6303 to 5357. [2022-07-22 19:45:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5357 states, 4992 states have (on average 1.6766826923076923) internal successors, (8370), 5011 states have internal predecessors, (8370), 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) [2022-07-22 19:45:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5357 states to 5357 states and 8955 transitions. [2022-07-22 19:45:53,878 INFO L78 Accepts]: Start accepts. Automaton has 5357 states and 8955 transitions. Word has length 102 [2022-07-22 19:45:53,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:45:53,879 INFO L495 AbstractCegarLoop]: Abstraction has 5357 states and 8955 transitions. [2022-07-22 19:45:53,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:53,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5357 states and 8955 transitions. [2022-07-22 19:45:53,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:45:53,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:45:53,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:45:53,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 19:45:53,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:45:53,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:45:53,888 INFO L85 PathProgramCache]: Analyzing trace with hash -973786504, now seen corresponding path program 1 times [2022-07-22 19:45:53,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:45:53,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981169268] [2022-07-22 19:45:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:45:53,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:45:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:53,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:45:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:53,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:45:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:53,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:45:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:53,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:45:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:45:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:45:53,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:45:53,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981169268] [2022-07-22 19:45:53,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981169268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:45:53,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:45:53,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:45:53,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937658416] [2022-07-22 19:45:53,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:45:53,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:45:53,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:45:53,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:45:53,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:45:54,000 INFO L87 Difference]: Start difference. First operand 5357 states and 8955 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:55,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:45:55,768 INFO L93 Difference]: Finished difference Result 14612 states and 23393 transitions. [2022-07-22 19:45:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:45:55,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-22 19:45:55,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:45:55,812 INFO L225 Difference]: With dead ends: 14612 [2022-07-22 19:45:55,813 INFO L226 Difference]: Without dead ends: 11389 [2022-07-22 19:45:55,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 19:45:55,829 INFO L413 NwaCegarLoop]: 4331 mSDtfsCounter, 4979 mSDsluCounter, 16535 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4997 SdHoareTripleChecker+Valid, 20866 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:45:55,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4997 Valid, 20866 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:45:55,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11389 states. [2022-07-22 19:45:56,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11389 to 8350. [2022-07-22 19:45:56,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8350 states, 7665 states have (on average 1.6287018917155904) internal successors, (12484), 7700 states have internal predecessors, (12484), 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) [2022-07-22 19:45:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8350 states to 8350 states and 13663 transitions. [2022-07-22 19:45:56,234 INFO L78 Accepts]: Start accepts. Automaton has 8350 states and 13663 transitions. Word has length 102 [2022-07-22 19:45:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:45:56,234 INFO L495 AbstractCegarLoop]: Abstraction has 8350 states and 13663 transitions. [2022-07-22 19:45:56,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:56,235 INFO L276 IsEmpty]: Start isEmpty. Operand 8350 states and 13663 transitions. [2022-07-22 19:45:56,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:45:56,244 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:45:56,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:45:56,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 19:45:56,247 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:45:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:45:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2116288970, now seen corresponding path program 1 times [2022-07-22 19:45:56,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:45:56,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253884178] [2022-07-22 19:45:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:45:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:45:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:45:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:56,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:45:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:56,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:45:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:56,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:45:56,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:56,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:45:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:56,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:45:56,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:45:56,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253884178] [2022-07-22 19:45:56,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253884178] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:45:56,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:45:56,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:45:56,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027554594] [2022-07-22 19:45:56,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:45:56,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:45:56,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:45:56,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:45:56,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:45:56,342 INFO L87 Difference]: Start difference. First operand 8350 states and 13663 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:58,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:45:58,357 INFO L93 Difference]: Finished difference Result 26019 states and 41415 transitions. [2022-07-22 19:45:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:45:58,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-22 19:45:58,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:45:58,434 INFO L225 Difference]: With dead ends: 26019 [2022-07-22 19:45:58,435 INFO L226 Difference]: Without dead ends: 19803 [2022-07-22 19:45:58,464 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 [2022-07-22 19:45:58,465 INFO L413 NwaCegarLoop]: 4526 mSDtfsCounter, 4757 mSDsluCounter, 16880 mSDsCounter, 0 mSdLazyCounter, 1734 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 21406 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 19:45:58,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4768 Valid, 21406 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1734 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 19:45:58,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19803 states. [2022-07-22 19:45:59,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19803 to 13999. [2022-07-22 19:45:59,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13999 states, 12690 states have (on average 1.5878644602048857) internal successors, (20150), 12757 states have internal predecessors, (20150), 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) [2022-07-22 19:45:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13999 states to 13999 states and 22647 transitions. [2022-07-22 19:45:59,235 INFO L78 Accepts]: Start accepts. Automaton has 13999 states and 22647 transitions. Word has length 102 [2022-07-22 19:45:59,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:45:59,236 INFO L495 AbstractCegarLoop]: Abstraction has 13999 states and 22647 transitions. [2022-07-22 19:45:59,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:45:59,236 INFO L276 IsEmpty]: Start isEmpty. Operand 13999 states and 22647 transitions. [2022-07-22 19:45:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:45:59,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:45:59,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:45:59,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 19:45:59,246 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:45:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:45:59,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1876049224, now seen corresponding path program 1 times [2022-07-22 19:45:59,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:45:59,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672427345] [2022-07-22 19:45:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:45:59,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:45:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:45:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:59,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:45:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:59,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:45:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:59,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:45:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:59,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:45:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:45:59,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:45:59,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:45:59,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672427345] [2022-07-22 19:45:59,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672427345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:45:59,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:45:59,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:45:59,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451605788] [2022-07-22 19:45:59,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:45:59,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:45:59,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:45:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:45:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:45:59,355 INFO L87 Difference]: Start difference. First operand 13999 states and 22647 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:46:02,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:02,102 INFO L93 Difference]: Finished difference Result 47282 states and 75405 transitions. [2022-07-22 19:46:02,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:46:02,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-22 19:46:02,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:02,246 INFO L225 Difference]: With dead ends: 47282 [2022-07-22 19:46:02,246 INFO L226 Difference]: Without dead ends: 35417 [2022-07-22 19:46:02,304 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 [2022-07-22 19:46:02,306 INFO L413 NwaCegarLoop]: 4446 mSDtfsCounter, 4849 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4867 SdHoareTripleChecker+Valid, 21329 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:02,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4867 Valid, 21329 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:46:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35417 states. [2022-07-22 19:46:03,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35417 to 25584. [2022-07-22 19:46:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25584 states, 23059 states have (on average 1.5650288390650071) internal successors, (36088), 23190 states have internal predecessors, (36088), 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) [2022-07-22 19:46:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25584 states to 25584 states and 41643 transitions. [2022-07-22 19:46:03,650 INFO L78 Accepts]: Start accepts. Automaton has 25584 states and 41643 transitions. Word has length 102 [2022-07-22 19:46:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:03,651 INFO L495 AbstractCegarLoop]: Abstraction has 25584 states and 41643 transitions. [2022-07-22 19:46:03,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:46:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 25584 states and 41643 transitions. [2022-07-22 19:46:03,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:46:03,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:03,670 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:03,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 19:46:03,671 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1037015562, now seen corresponding path program 1 times [2022-07-22 19:46:03,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:03,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110294572] [2022-07-22 19:46:03,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:03,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:03,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:03,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:46:03,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:03,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:46:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:46:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:03,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:03,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:03,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:03,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110294572] [2022-07-22 19:46:03,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110294572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:03,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:03,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:03,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758501707] [2022-07-22 19:46:03,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:03,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:03,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:03,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:03,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:03,771 INFO L87 Difference]: Start difference. First operand 25584 states and 41643 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:46:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:08,269 INFO L93 Difference]: Finished difference Result 89521 states and 145107 transitions. [2022-07-22 19:46:08,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 19:46:08,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-22 19:46:08,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:08,570 INFO L225 Difference]: With dead ends: 89521 [2022-07-22 19:46:08,570 INFO L226 Difference]: Without dead ends: 66071 [2022-07-22 19:46:08,657 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 [2022-07-22 19:46:08,658 INFO L413 NwaCegarLoop]: 4439 mSDtfsCounter, 4812 mSDsluCounter, 16883 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4830 SdHoareTripleChecker+Valid, 21322 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:08,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4830 Valid, 21322 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:46:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66071 states. [2022-07-22 19:46:11,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66071 to 48689. [2022-07-22 19:46:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48689 states, 43796 states have (on average 1.553246871860444) internal successors, (68026), 44055 states have internal predecessors, (68026), 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) [2022-07-22 19:46:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48689 states to 48689 states and 81027 transitions. [2022-07-22 19:46:11,574 INFO L78 Accepts]: Start accepts. Automaton has 48689 states and 81027 transitions. Word has length 102 [2022-07-22 19:46:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:11,574 INFO L495 AbstractCegarLoop]: Abstraction has 48689 states and 81027 transitions. [2022-07-22 19:46:11,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:46:11,574 INFO L276 IsEmpty]: Start isEmpty. Operand 48689 states and 81027 transitions. [2022-07-22 19:46:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:46:11,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:11,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:11,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 19:46:11,609 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:11,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1009949960, now seen corresponding path program 1 times [2022-07-22 19:46:11,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:11,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884869037] [2022-07-22 19:46:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:11,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:46:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:46:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:46:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:11,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:11,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884869037] [2022-07-22 19:46:11,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884869037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:11,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:11,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 19:46:11,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978736205] [2022-07-22 19:46:11,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:11,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 19:46:11,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:11,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 19:46:11,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 19:46:11,714 INFO L87 Difference]: Start difference. First operand 48689 states and 81027 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:46:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:15,586 INFO L93 Difference]: Finished difference Result 107098 states and 182436 transitions. [2022-07-22 19:46:15,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 19:46:15,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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 102 [2022-07-22 19:46:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:16,046 INFO L225 Difference]: With dead ends: 107098 [2022-07-22 19:46:16,046 INFO L226 Difference]: Without dead ends: 60543 [2022-07-22 19:46:16,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 19:46:16,165 INFO L413 NwaCegarLoop]: 4254 mSDtfsCounter, 4522 mSDsluCounter, 16349 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4535 SdHoareTripleChecker+Valid, 20603 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:16,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4535 Valid, 20603 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 19:46:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60543 states. [2022-07-22 19:46:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60543 to 48689. [2022-07-22 19:46:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48689 states, 43796 states have (on average 1.5473787560507808) internal successors, (67769), 44055 states have internal predecessors, (67769), 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) [2022-07-22 19:46:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48689 states to 48689 states and 80770 transitions. [2022-07-22 19:46:19,364 INFO L78 Accepts]: Start accepts. Automaton has 48689 states and 80770 transitions. Word has length 102 [2022-07-22 19:46:19,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:19,365 INFO L495 AbstractCegarLoop]: Abstraction has 48689 states and 80770 transitions. [2022-07-22 19:46:19,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-07-22 19:46:19,365 INFO L276 IsEmpty]: Start isEmpty. Operand 48689 states and 80770 transitions. [2022-07-22 19:46:19,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 19:46:19,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:19,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:19,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 19:46:19,401 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:19,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:19,401 INFO L85 PathProgramCache]: Analyzing trace with hash 724154490, now seen corresponding path program 1 times [2022-07-22 19:46:19,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:19,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039094167] [2022-07-22 19:46:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:19,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:19,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:19,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:46:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:19,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:46:19,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:19,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:46:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 19:46:19,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:19,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039094167] [2022-07-22 19:46:19,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039094167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:19,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 19:46:19,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 19:46:19,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025464356] [2022-07-22 19:46:19,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:19,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 19:46:19,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:19,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 19:46:19,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 19:46:19,489 INFO L87 Difference]: Start difference. First operand 48689 states and 80770 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-22 19:46:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:25,654 INFO L93 Difference]: Finished difference Result 135211 states and 220744 transitions. [2022-07-22 19:46:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 19:46:25,655 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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 102 [2022-07-22 19:46:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:25,937 INFO L225 Difference]: With dead ends: 135211 [2022-07-22 19:46:25,937 INFO L226 Difference]: Without dead ends: 88657 [2022-07-22 19:46:26,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 19:46:26,046 INFO L413 NwaCegarLoop]: 4572 mSDtfsCounter, 4929 mSDsluCounter, 12525 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4960 SdHoareTripleChecker+Valid, 17097 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:26,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4960 Valid, 17097 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 19:46:26,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88657 states. [2022-07-22 19:46:29,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88657 to 71452. [2022-07-22 19:46:29,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71452 states, 64042 states have (on average 1.5303394647262734) internal successors, (98006), 64558 states have internal predecessors, (98006), 4708 states have call successors, (4708), 2317 states have call predecessors, (4708), 2700 states have return successors, (13711), 4832 states have call predecessors, (13711), 4706 states have call successors, (13711) [2022-07-22 19:46:30,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71452 states to 71452 states and 116425 transitions. [2022-07-22 19:46:30,240 INFO L78 Accepts]: Start accepts. Automaton has 71452 states and 116425 transitions. Word has length 102 [2022-07-22 19:46:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 19:46:30,240 INFO L495 AbstractCegarLoop]: Abstraction has 71452 states and 116425 transitions. [2022-07-22 19:46:30,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 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) [2022-07-22 19:46:30,241 INFO L276 IsEmpty]: Start isEmpty. Operand 71452 states and 116425 transitions. [2022-07-22 19:46:30,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-22 19:46:30,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 19:46:30,406 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 19:46:30,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 19:46:30,407 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 19:46:30,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 19:46:30,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1880616710, now seen corresponding path program 1 times [2022-07-22 19:46:30,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 19:46:30,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918961717] [2022-07-22 19:46:30,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:30,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 19:46:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:30,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 19:46:30,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 19:46:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:30,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 19:46:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 19:46:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:30,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 19:46:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 19:46:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:30,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-22 19:46:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-22 19:46:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 19:46:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 19:46:30,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918961717] [2022-07-22 19:46:30,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918961717] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 19:46:30,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208165945] [2022-07-22 19:46:30,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 19:46:30,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 19:46:30,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 19:46:30,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 19:46:30,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 19:46:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 19:46:30,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 19:46:30,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 19:46:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 19:46:30,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 19:46:30,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208165945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 19:46:30,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 19:46:30,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-22 19:46:30,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225823603] [2022-07-22 19:46:30,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 19:46:30,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 19:46:30,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 19:46:30,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 19:46:30,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:46:30,846 INFO L87 Difference]: Start difference. First operand 71452 states and 116425 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 19:46:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 19:46:37,338 INFO L93 Difference]: Finished difference Result 208731 states and 341317 transitions. [2022-07-22 19:46:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 19:46:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 165 [2022-07-22 19:46:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 19:46:38,045 INFO L225 Difference]: With dead ends: 208731 [2022-07-22 19:46:38,046 INFO L226 Difference]: Without dead ends: 139414 [2022-07-22 19:46:38,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 19:46:38,187 INFO L413 NwaCegarLoop]: 4286 mSDtfsCounter, 4204 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4204 SdHoareTripleChecker+Valid, 4573 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 19:46:38,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4204 Valid, 4573 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 19:46:38,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139414 states.