./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/token_ring.10.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/token_ring.10.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9102a3dc168a1a089cfcbe45042daf88c4c5eebedf113fc0c98e676c1fbaab5b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:16:07,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:16:07,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:16:07,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:16:07,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:16:07,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:16:07,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:16:07,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:16:07,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:16:07,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:16:07,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:16:07,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:16:07,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:16:07,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:16:07,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:16:07,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:16:07,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:16:07,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:16:07,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:16:07,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:16:07,155 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:16:07,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:16:07,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:16:07,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:16:07,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:16:07,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:16:07,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:16:07,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:16:07,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:16:07,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:16:07,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:16:07,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:16:07,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:16:07,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:16:07,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:16:07,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:16:07,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:16:07,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:16:07,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:16:07,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:16:07,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:16:07,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:16:07,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:16:07,201 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:16:07,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:16:07,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:16:07,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:16:07,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:16:07,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:16:07,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:16:07,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:16:07,204 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:16:07,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:16:07,205 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:16:07,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:16:07,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:16:07,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:16:07,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:16:07,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:16:07,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:16:07,206 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:16:07,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:16:07,206 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:16:07,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:16:07,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:16:07,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:16:07,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:16:07,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:16:07,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:16:07,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:16:07,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:16:07,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:16:07,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:16:07,208 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:16:07,209 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:16:07,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:16:07,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9102a3dc168a1a089cfcbe45042daf88c4c5eebedf113fc0c98e676c1fbaab5b [2022-07-21 05:16:07,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:16:07,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:16:07,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:16:07,491 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:16:07,492 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:16:07,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/token_ring.10.cil-1.c [2022-07-21 05:16:07,538 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/120d7bba2/664821e0ee1f4f7193c1cf2a6a11f07f/FLAGf9527f359 [2022-07-21 05:16:07,843 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:16:07,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c [2022-07-21 05:16:07,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/120d7bba2/664821e0ee1f4f7193c1cf2a6a11f07f/FLAGf9527f359 [2022-07-21 05:16:08,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/120d7bba2/664821e0ee1f4f7193c1cf2a6a11f07f [2022-07-21 05:16:08,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:16:08,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:16:08,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:16:08,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:16:08,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:16:08,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777f209f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08, skipping insertion in model container [2022-07-21 05:16:08,269 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:16:08,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:16:08,398 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c[671,684] [2022-07-21 05:16:08,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:16:08,522 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:16:08,530 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/token_ring.10.cil-1.c[671,684] [2022-07-21 05:16:08,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:16:08,622 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:16:08,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08 WrapperNode [2022-07-21 05:16:08,622 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:16:08,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:16:08,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:16:08,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:16:08,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,686 INFO L137 Inliner]: procedures = 48, calls = 62, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 742 [2022-07-21 05:16:08,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:16:08,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:16:08,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:16:08,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:16:08,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:16:08,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:16:08,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:16:08,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:16:08,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08" (1/1) ... [2022-07-21 05:16:08,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:16:08,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:16:08,782 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 05:16:08,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 05:16:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:16:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-21 05:16:08,820 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-21 05:16:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-21 05:16:08,820 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-21 05:16:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-21 05:16:08,821 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-21 05:16:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-21 05:16:08,821 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-21 05:16:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-21 05:16:08,821 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-21 05:16:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-21 05:16:08,821 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-21 05:16:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:16:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-21 05:16:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-21 05:16:08,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:16:08,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:16:08,943 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:16:08,944 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:16:09,462 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:16:09,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:16:09,476 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-07-21 05:16:09,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:16:09 BoogieIcfgContainer [2022-07-21 05:16:09,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:16:09,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:16:09,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:16:09,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:16:09,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:16:08" (1/3) ... [2022-07-21 05:16:09,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3408a2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:16:09, skipping insertion in model container [2022-07-21 05:16:09,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:16:08" (2/3) ... [2022-07-21 05:16:09,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3408a2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:16:09, skipping insertion in model container [2022-07-21 05:16:09,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:16:09" (3/3) ... [2022-07-21 05:16:09,484 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.10.cil-1.c [2022-07-21 05:16:09,493 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:16:09,494 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:16:09,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:16:09,548 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@b327c1a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@40603517 [2022-07-21 05:16:09,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:16:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 340 states, 305 states have (on average 1.662295081967213) internal successors, (507), 309 states have internal predecessors, (507), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-21 05:16:09,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:09,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:09,573 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:09,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:09,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1757067133, now seen corresponding path program 1 times [2022-07-21 05:16:09,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:09,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444151173] [2022-07-21 05:16:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:09,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:09,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:09,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:09,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:09,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:09,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444151173] [2022-07-21 05:16:09,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444151173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:09,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:09,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:16:09,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499093425] [2022-07-21 05:16:09,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:09,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:16:09,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:09,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:16:10,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:16:10,002 INFO L87 Difference]: Start difference. First operand has 340 states, 305 states have (on average 1.662295081967213) internal successors, (507), 309 states have internal predecessors, (507), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:11,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:11,033 INFO L93 Difference]: Finished difference Result 792 states and 1316 transitions. [2022-07-21 05:16:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:16:11,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 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 156 [2022-07-21 05:16:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:11,045 INFO L225 Difference]: With dead ends: 792 [2022-07-21 05:16:11,045 INFO L226 Difference]: Without dead ends: 454 [2022-07-21 05:16:11,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:16:11,057 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 898 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:11,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 943 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 05:16:11,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-21 05:16:11,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 334. [2022-07-21 05:16:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 301 states have (on average 1.5747508305647842) internal successors, (474), 303 states have internal predecessors, (474), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-21 05:16:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 524 transitions. [2022-07-21 05:16:11,120 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 524 transitions. Word has length 156 [2022-07-21 05:16:11,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:11,120 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 524 transitions. [2022-07-21 05:16:11,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 524 transitions. [2022-07-21 05:16:11,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:11,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:11,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:11,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:16:11,126 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:11,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:11,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1371204731, now seen corresponding path program 1 times [2022-07-21 05:16:11,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:11,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697890329] [2022-07-21 05:16:11,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:11,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:11,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:11,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697890329] [2022-07-21 05:16:11,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697890329] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:11,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:11,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:16:11,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564012286] [2022-07-21 05:16:11,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:11,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:16:11,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:11,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:16:11,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:16:11,278 INFO L87 Difference]: Start difference. First operand 334 states and 524 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:12,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:12,177 INFO L93 Difference]: Finished difference Result 774 states and 1232 transitions. [2022-07-21 05:16:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:16:12,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 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 156 [2022-07-21 05:16:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:12,181 INFO L225 Difference]: With dead ends: 774 [2022-07-21 05:16:12,181 INFO L226 Difference]: Without dead ends: 454 [2022-07-21 05:16:12,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:16:12,183 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 885 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:12,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 929 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:16:12,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-21 05:16:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 334. [2022-07-21 05:16:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 301 states have (on average 1.5714285714285714) internal successors, (473), 303 states have internal predecessors, (473), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-21 05:16:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 523 transitions. [2022-07-21 05:16:12,209 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 523 transitions. Word has length 156 [2022-07-21 05:16:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:12,210 INFO L495 AbstractCegarLoop]: Abstraction has 334 states and 523 transitions. [2022-07-21 05:16:12,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 523 transitions. [2022-07-21 05:16:12,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:12,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:12,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:12,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:16:12,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:12,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:12,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1527185273, now seen corresponding path program 1 times [2022-07-21 05:16:12,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:12,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099835033] [2022-07-21 05:16:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:12,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:12,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:12,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:12,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:12,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:12,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:12,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099835033] [2022-07-21 05:16:12,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099835033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:12,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:12,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:16:12,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798062382] [2022-07-21 05:16:12,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:12,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:16:12,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:12,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:16:12,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:16:12,351 INFO L87 Difference]: Start difference. First operand 334 states and 523 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:14,229 INFO L93 Difference]: Finished difference Result 1220 states and 1954 transitions. [2022-07-21 05:16:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 05:16:14,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 4 states have internal predecessors, (145), 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 156 [2022-07-21 05:16:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:14,235 INFO L225 Difference]: With dead ends: 1220 [2022-07-21 05:16:14,235 INFO L226 Difference]: Without dead ends: 904 [2022-07-21 05:16:14,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:16:14,237 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 1338 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:14,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 1473 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 05:16:14,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-07-21 05:16:14,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 663. [2022-07-21 05:16:14,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 604 states have (on average 1.5844370860927153) internal successors, (957), 607 states have internal predecessors, (957), 45 states have call successors, (45), 13 states have call predecessors, (45), 13 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2022-07-21 05:16:14,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1048 transitions. [2022-07-21 05:16:14,281 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1048 transitions. Word has length 156 [2022-07-21 05:16:14,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:14,281 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 1048 transitions. [2022-07-21 05:16:14,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:14,281 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1048 transitions. [2022-07-21 05:16:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:14,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:14,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:14,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:16:14,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:14,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:14,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2101746827, now seen corresponding path program 1 times [2022-07-21 05:16:14,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:14,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343515780] [2022-07-21 05:16:14,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:14,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:14,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:14,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:14,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:14,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343515780] [2022-07-21 05:16:14,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343515780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:14,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:14,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:14,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758629003] [2022-07-21 05:16:14,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:14,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:14,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:14,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:14,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:14,402 INFO L87 Difference]: Start difference. First operand 663 states and 1048 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:16,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:16,618 INFO L93 Difference]: Finished difference Result 2013 states and 3230 transitions. [2022-07-21 05:16:16,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:16,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2022-07-21 05:16:16,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:16,625 INFO L225 Difference]: With dead ends: 2013 [2022-07-21 05:16:16,625 INFO L226 Difference]: Without dead ends: 1368 [2022-07-21 05:16:16,628 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 [2022-07-21 05:16:16,636 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 1358 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2685 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 2761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:16,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 2582 Invalid, 2761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2685 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:16:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2022-07-21 05:16:16,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 969. [2022-07-21 05:16:16,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 884 states have (on average 1.5780542986425339) internal successors, (1395), 888 states have internal predecessors, (1395), 64 states have call successors, (64), 19 states have call predecessors, (64), 20 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2022-07-21 05:16:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1526 transitions. [2022-07-21 05:16:16,704 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1526 transitions. Word has length 156 [2022-07-21 05:16:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:16,705 INFO L495 AbstractCegarLoop]: Abstraction has 969 states and 1526 transitions. [2022-07-21 05:16:16,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:16,709 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1526 transitions. [2022-07-21 05:16:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:16,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:16,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:16,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:16:16,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:16,716 INFO L85 PathProgramCache]: Analyzing trace with hash -702793225, now seen corresponding path program 1 times [2022-07-21 05:16:16,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:16,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351218301] [2022-07-21 05:16:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:16,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:16,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:16,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:16,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:16,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:16,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:16,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:16,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:16,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351218301] [2022-07-21 05:16:16,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351218301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:16,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:16,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:16,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483523072] [2022-07-21 05:16:16,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:16,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:16,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:16,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:16,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:16,834 INFO L87 Difference]: Start difference. First operand 969 states and 1526 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:18,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:18,993 INFO L93 Difference]: Finished difference Result 3182 states and 5096 transitions. [2022-07-21 05:16:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:18,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2022-07-21 05:16:18,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:19,002 INFO L225 Difference]: With dead ends: 3182 [2022-07-21 05:16:19,003 INFO L226 Difference]: Without dead ends: 2231 [2022-07-21 05:16:19,005 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 [2022-07-21 05:16:19,008 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 1456 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:19,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1767 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 05:16:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2022-07-21 05:16:19,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1582. [2022-07-21 05:16:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1445 states have (on average 1.5723183391003461) internal successors, (2272), 1451 states have internal predecessors, (2272), 102 states have call successors, (102), 31 states have call predecessors, (102), 34 states have return successors, (113), 103 states have call predecessors, (113), 100 states have call successors, (113) [2022-07-21 05:16:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2487 transitions. [2022-07-21 05:16:19,119 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2487 transitions. Word has length 156 [2022-07-21 05:16:19,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:19,120 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2487 transitions. [2022-07-21 05:16:19,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:19,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2487 transitions. [2022-07-21 05:16:19,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:19,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:19,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:19,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:16:19,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:19,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1974733621, now seen corresponding path program 1 times [2022-07-21 05:16:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:19,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785260249] [2022-07-21 05:16:19,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:19,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:19,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:19,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:19,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:19,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:19,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:19,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785260249] [2022-07-21 05:16:19,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785260249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:19,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:19,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:19,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528902776] [2022-07-21 05:16:19,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:19,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:19,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:19,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:19,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:19,236 INFO L87 Difference]: Start difference. First operand 1582 states and 2487 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:21,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:21,594 INFO L93 Difference]: Finished difference Result 5428 states and 8661 transitions. [2022-07-21 05:16:21,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:21,595 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2022-07-21 05:16:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:21,607 INFO L225 Difference]: With dead ends: 5428 [2022-07-21 05:16:21,607 INFO L226 Difference]: Without dead ends: 3864 [2022-07-21 05:16:21,611 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 [2022-07-21 05:16:21,611 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 1352 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 2751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:21,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 2566 Invalid, 2751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 05:16:21,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2022-07-21 05:16:21,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 2814. [2022-07-21 05:16:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2573 states have (on average 1.5685969685192382) internal successors, (4036), 2583 states have internal predecessors, (4036), 178 states have call successors, (178), 55 states have call predecessors, (178), 62 states have return successors, (211), 183 states have call predecessors, (211), 176 states have call successors, (211) [2022-07-21 05:16:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 4425 transitions. [2022-07-21 05:16:21,740 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 4425 transitions. Word has length 156 [2022-07-21 05:16:21,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:21,741 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 4425 transitions. [2022-07-21 05:16:21,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 4425 transitions. [2022-07-21 05:16:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:21,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:21,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:21,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:16:21,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:21,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2031414285, now seen corresponding path program 1 times [2022-07-21 05:16:21,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:21,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734240401] [2022-07-21 05:16:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:21,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:21,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:21,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:21,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:21,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:21,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:21,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734240401] [2022-07-21 05:16:21,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734240401] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:21,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:21,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:21,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078470031] [2022-07-21 05:16:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:21,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:21,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:21,879 INFO L87 Difference]: Start difference. First operand 2814 states and 4425 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:24,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:24,333 INFO L93 Difference]: Finished difference Result 9930 states and 15825 transitions. [2022-07-21 05:16:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:24,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2022-07-21 05:16:24,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:24,361 INFO L225 Difference]: With dead ends: 9930 [2022-07-21 05:16:24,361 INFO L226 Difference]: Without dead ends: 7134 [2022-07-21 05:16:24,368 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 [2022-07-21 05:16:24,369 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 1351 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2661 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:24,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 2561 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2661 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:16:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7134 states. [2022-07-21 05:16:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7134 to 5283. [2022-07-21 05:16:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5283 states, 4834 states have (on average 1.565990897807199) internal successors, (7570), 4852 states have internal predecessors, (7570), 330 states have call successors, (330), 103 states have call predecessors, (330), 118 states have return successors, (425), 343 states have call predecessors, (425), 328 states have call successors, (425) [2022-07-21 05:16:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5283 states to 5283 states and 8325 transitions. [2022-07-21 05:16:24,660 INFO L78 Accepts]: Start accepts. Automaton has 5283 states and 8325 transitions. Word has length 156 [2022-07-21 05:16:24,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:24,662 INFO L495 AbstractCegarLoop]: Abstraction has 5283 states and 8325 transitions. [2022-07-21 05:16:24,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:24,662 INFO L276 IsEmpty]: Start isEmpty. Operand 5283 states and 8325 transitions. [2022-07-21 05:16:24,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:24,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:24,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:24,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:16:24,666 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:24,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:24,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1718680437, now seen corresponding path program 1 times [2022-07-21 05:16:24,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:24,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893240381] [2022-07-21 05:16:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:24,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:24,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:24,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:24,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:24,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:24,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:24,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893240381] [2022-07-21 05:16:24,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893240381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:24,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:24,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:24,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430089487] [2022-07-21 05:16:24,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:24,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:24,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:24,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:24,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:24,762 INFO L87 Difference]: Start difference. First operand 5283 states and 8325 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:27,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:27,481 INFO L93 Difference]: Finished difference Result 18933 states and 30211 transitions. [2022-07-21 05:16:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:27,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2022-07-21 05:16:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:27,525 INFO L225 Difference]: With dead ends: 18933 [2022-07-21 05:16:27,544 INFO L226 Difference]: Without dead ends: 13668 [2022-07-21 05:16:27,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:27,558 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 1350 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2653 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 2735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:27,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1367 Valid, 2556 Invalid, 2735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2653 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 05:16:27,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13668 states. [2022-07-21 05:16:28,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13668 to 10236. [2022-07-21 05:16:28,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10236 states, 9371 states have (on average 1.5644008110126988) internal successors, (14660), 9405 states have internal predecessors, (14660), 634 states have call successors, (634), 199 states have call predecessors, (634), 230 states have return successors, (907), 663 states have call predecessors, (907), 632 states have call successors, (907) [2022-07-21 05:16:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10236 states to 10236 states and 16201 transitions. [2022-07-21 05:16:28,155 INFO L78 Accepts]: Start accepts. Automaton has 10236 states and 16201 transitions. Word has length 156 [2022-07-21 05:16:28,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:28,155 INFO L495 AbstractCegarLoop]: Abstraction has 10236 states and 16201 transitions. [2022-07-21 05:16:28,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:28,156 INFO L276 IsEmpty]: Start isEmpty. Operand 10236 states and 16201 transitions. [2022-07-21 05:16:28,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:28,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:28,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:28,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:16:28,163 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1901126733, now seen corresponding path program 1 times [2022-07-21 05:16:28,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:28,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152984074] [2022-07-21 05:16:28,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:28,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:28,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:28,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:28,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:28,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:28,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:28,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152984074] [2022-07-21 05:16:28,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152984074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:28,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:28,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:28,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908286165] [2022-07-21 05:16:28,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:28,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:28,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:28,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:28,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:28,301 INFO L87 Difference]: Start difference. First operand 10236 states and 16201 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:31,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:31,787 INFO L93 Difference]: Finished difference Result 36940 states and 59177 transitions. [2022-07-21 05:16:31,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:31,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2022-07-21 05:16:31,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:31,873 INFO L225 Difference]: With dead ends: 36940 [2022-07-21 05:16:31,874 INFO L226 Difference]: Without dead ends: 26722 [2022-07-21 05:16:31,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:31,904 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 1349 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2645 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 2727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:31,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1366 Valid, 2551 Invalid, 2727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2645 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:16:31,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26722 states. [2022-07-21 05:16:32,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26722 to 20173. [2022-07-21 05:16:32,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20173 states, 18476 states have (on average 1.5634336436458107) internal successors, (28886), 18542 states have internal predecessors, (28886), 1242 states have call successors, (1242), 391 states have call predecessors, (1242), 454 states have return successors, (2033), 1303 states have call predecessors, (2033), 1240 states have call successors, (2033) [2022-07-21 05:16:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20173 states to 20173 states and 32161 transitions. [2022-07-21 05:16:32,991 INFO L78 Accepts]: Start accepts. Automaton has 20173 states and 32161 transitions. Word has length 156 [2022-07-21 05:16:32,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:32,992 INFO L495 AbstractCegarLoop]: Abstraction has 20173 states and 32161 transitions. [2022-07-21 05:16:32,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:32,992 INFO L276 IsEmpty]: Start isEmpty. Operand 20173 states and 32161 transitions. [2022-07-21 05:16:33,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:33,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:33,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:33,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:16:33,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:33,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:33,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1445788597, now seen corresponding path program 1 times [2022-07-21 05:16:33,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:33,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171416000] [2022-07-21 05:16:33,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:33,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:33,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:33,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:33,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:33,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:33,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:33,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:33,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171416000] [2022-07-21 05:16:33,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171416000] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:33,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:33,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:33,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026250011] [2022-07-21 05:16:33,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:33,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:33,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:33,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:33,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:33,106 INFO L87 Difference]: Start difference. First operand 20173 states and 32161 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:38,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:38,093 INFO L93 Difference]: Finished difference Result 72955 states and 117711 transitions. [2022-07-21 05:16:38,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:38,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2022-07-21 05:16:38,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:38,266 INFO L225 Difference]: With dead ends: 72955 [2022-07-21 05:16:38,267 INFO L226 Difference]: Without dead ends: 52800 [2022-07-21 05:16:38,319 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 [2022-07-21 05:16:38,320 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 1348 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:38,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 2546 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:16:38,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52800 states. [2022-07-21 05:16:40,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52800 to 40110. [2022-07-21 05:16:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40110 states, 36749 states have (on average 1.5628180358649215) internal successors, (57432), 36879 states have internal predecessors, (57432), 2458 states have call successors, (2458), 775 states have call predecessors, (2458), 902 states have return successors, (4771), 2583 states have call predecessors, (4771), 2456 states have call successors, (4771) [2022-07-21 05:16:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40110 states to 40110 states and 64661 transitions. [2022-07-21 05:16:40,815 INFO L78 Accepts]: Start accepts. Automaton has 40110 states and 64661 transitions. Word has length 156 [2022-07-21 05:16:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:40,815 INFO L495 AbstractCegarLoop]: Abstraction has 40110 states and 64661 transitions. [2022-07-21 05:16:40,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 40110 states and 64661 transitions. [2022-07-21 05:16:40,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:40,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:40,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:40,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:16:40,835 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:40,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:40,836 INFO L85 PathProgramCache]: Analyzing trace with hash 861016947, now seen corresponding path program 1 times [2022-07-21 05:16:40,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:40,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885517409] [2022-07-21 05:16:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:40,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:40,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:40,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885517409] [2022-07-21 05:16:40,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885517409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:40,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:40,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537524629] [2022-07-21 05:16:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:40,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:40,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:40,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:40,941 INFO L87 Difference]: Start difference. First operand 40110 states and 64661 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:16:49,178 INFO L93 Difference]: Finished difference Result 144986 states and 236629 transitions. [2022-07-21 05:16:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:16:49,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2022-07-21 05:16:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:16:49,635 INFO L225 Difference]: With dead ends: 144986 [2022-07-21 05:16:49,635 INFO L226 Difference]: Without dead ends: 104894 [2022-07-21 05:16:49,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:16:49,773 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 1347 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2629 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:16:49,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 2541 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2629 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 05:16:49,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104894 states. [2022-07-21 05:16:54,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104894 to 80111. [2022-07-21 05:16:54,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80111 states, 73422 states have (on average 1.5623927433194411) internal successors, (114714), 73680 states have internal predecessors, (114714), 4890 states have call successors, (4890), 1543 states have call predecessors, (4890), 1798 states have return successors, (11705), 5143 states have call predecessors, (11705), 4888 states have call successors, (11705) [2022-07-21 05:16:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80111 states to 80111 states and 131309 transitions. [2022-07-21 05:16:54,684 INFO L78 Accepts]: Start accepts. Automaton has 80111 states and 131309 transitions. Word has length 156 [2022-07-21 05:16:54,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:16:54,685 INFO L495 AbstractCegarLoop]: Abstraction has 80111 states and 131309 transitions. [2022-07-21 05:16:54,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:16:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 80111 states and 131309 transitions. [2022-07-21 05:16:54,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 05:16:54,722 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:16:54,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:16:54,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:16:54,723 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:16:54,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:16:54,724 INFO L85 PathProgramCache]: Analyzing trace with hash 426511349, now seen corresponding path program 1 times [2022-07-21 05:16:54,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:16:54,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104631975] [2022-07-21 05:16:54,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:16:54,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:16:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:16:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:16:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:16:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-21 05:16:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:54,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 05:16:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:16:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:16:54,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:16:54,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104631975] [2022-07-21 05:16:54,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104631975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:16:54,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:16:54,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:16:54,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185911132] [2022-07-21 05:16:54,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:16:54,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:16:54,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:16:54,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:16:54,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:16:54,836 INFO L87 Difference]: Start difference. First operand 80111 states and 131309 transitions. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-21 05:17:10,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:17:10,466 INFO L93 Difference]: Finished difference Result 289049 states and 480107 transitions. [2022-07-21 05:17:10,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 05:17:10,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 5 states have internal predecessors, (145), 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 156 [2022-07-21 05:17:10,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:17:11,489 INFO L225 Difference]: With dead ends: 289049 [2022-07-21 05:17:11,490 INFO L226 Difference]: Without dead ends: 208956 [2022-07-21 05:17:11,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-21 05:17:11,710 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 1432 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 05:17:11,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 1742 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 05:17:11,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208956 states.