./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/product-lines/email_spec27_product19.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:03:32,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:03:32,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:03:32,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:03:32,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:03:32,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:03:32,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:03:32,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:03:32,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:03:32,178 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:03:32,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:03:32,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:03:32,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:03:32,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:03:32,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:03:32,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:03:32,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:03:32,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:03:32,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:03:32,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:03:32,198 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:03:32,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:03:32,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:03:32,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:03:32,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:03:32,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:03:32,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:03:32,208 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:03:32,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:03:32,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:03:32,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:03:32,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:03:32,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:03:32,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:03:32,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:03:32,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:03:32,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:03:32,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:03:32,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:03:32,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:03:32,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:03:32,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:03:32,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:03:32,244 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:03:32,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:03:32,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:03:32,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:03:32,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:03:32,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:03:32,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:03:32,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:03:32,248 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:03:32,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:03:32,249 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:03:32,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:03:32,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:03:32,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:03:32,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:03:32,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:03:32,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:03:32,250 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:03:32,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:03:32,252 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:03:32,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:03:32,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:03:32,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:03:32,253 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:03:32,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:03:32,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:03:32,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:03:32,254 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:03:32,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:03:32,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:03:32,254 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:03:32,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:03:32,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:03:32,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 [2022-07-12 06:03:32,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:03:32,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:03:32,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:03:32,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:03:32,530 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:03:32,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2022-07-12 06:03:32,609 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69db5a0ab/a2dcc81956894003b96144f5120a8c19/FLAGc1103e71c [2022-07-12 06:03:33,128 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:03:33,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2022-07-12 06:03:33,157 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69db5a0ab/a2dcc81956894003b96144f5120a8c19/FLAGc1103e71c [2022-07-12 06:03:33,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69db5a0ab/a2dcc81956894003b96144f5120a8c19 [2022-07-12 06:03:33,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:03:33,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:03:33,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:03:33,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:03:33,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:03:33,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:03:33" (1/1) ... [2022-07-12 06:03:33,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e1eb0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:33, skipping insertion in model container [2022-07-12 06:03:33,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:03:33" (1/1) ... [2022-07-12 06:03:33,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:03:33,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:03:34,000 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/product-lines/email_spec27_product19.cil.c[17762,17775] [2022-07-12 06:03:34,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:03:34,158 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:03:34,207 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/product-lines/email_spec27_product19.cil.c[17762,17775] [2022-07-12 06:03:34,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:03:34,324 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:03:34,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34 WrapperNode [2022-07-12 06:03:34,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:03:34,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:03:34,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:03:34,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:03:34,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34" (1/1) ... [2022-07-12 06:03:34,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34" (1/1) ... [2022-07-12 06:03:34,452 INFO L137 Inliner]: procedures = 127, calls = 200, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 949 [2022-07-12 06:03:34,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:03:34,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:03:34,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:03:34,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:03:34,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34" (1/1) ... [2022-07-12 06:03:34,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34" (1/1) ... [2022-07-12 06:03:34,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34" (1/1) ... [2022-07-12 06:03:34,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34" (1/1) ... [2022-07-12 06:03:34,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34" (1/1) ... [2022-07-12 06:03:34,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34" (1/1) ... [2022-07-12 06:03:34,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34" (1/1) ... [2022-07-12 06:03:34,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:03:34,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:03:34,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:03:34,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:03:34,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34" (1/1) ... [2022-07-12 06:03:34,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:03:34,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:03:34,581 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) [2022-07-12 06:03:34,601 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 [2022-07-12 06:03:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-12 06:03:34,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-12 06:03:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-12 06:03:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-12 06:03:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-12 06:03:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-12 06:03:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-12 06:03:34,625 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-12 06:03:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-12 06:03:34,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-12 06:03:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-12 06:03:34,626 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-12 06:03:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-12 06:03:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-12 06:03:34,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-12 06:03:34,626 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-12 06:03:34,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-12 06:03:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:03:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-12 06:03:34,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-12 06:03:34,627 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-12 06:03:34,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-12 06:03:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-12 06:03:34,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-12 06:03:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-12 06:03:34,628 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-12 06:03:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-07-12 06:03:34,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-07-12 06:03:34,628 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-12 06:03:34,629 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-12 06:03:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-12 06:03:34,629 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-12 06:03:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-12 06:03:34,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-12 06:03:34,629 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-12 06:03:34,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-12 06:03:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:03:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-12 06:03:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-12 06:03:34,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:03:34,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:03:34,848 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:03:34,850 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:03:35,462 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:03:35,471 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:03:35,474 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:03:35,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:03:35 BoogieIcfgContainer [2022-07-12 06:03:35,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:03:35,479 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:03:35,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:03:35,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:03:35,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:03:33" (1/3) ... [2022-07-12 06:03:35,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c4fc1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:03:35, skipping insertion in model container [2022-07-12 06:03:35,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:03:34" (2/3) ... [2022-07-12 06:03:35,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c4fc1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:03:35, skipping insertion in model container [2022-07-12 06:03:35,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:03:35" (3/3) ... [2022-07-12 06:03:35,490 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product19.cil.c [2022-07-12 06:03:35,503 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:03:35,503 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:03:35,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:03:35,579 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@40ddb108, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f59ed17 [2022-07-12 06:03:35,580 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:03:35,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 250 states have internal predecessors, (378), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-12 06:03:35,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 06:03:35,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:35,626 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:35,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:35,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:35,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1318613566, now seen corresponding path program 1 times [2022-07-12 06:03:35,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:35,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471442472] [2022-07-12 06:03:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:35,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:35,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:03:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:03:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:03:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:03:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 06:03:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:03:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:03:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:03:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:03:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:03:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:03:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 06:03:36,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:36,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471442472] [2022-07-12 06:03:36,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471442472] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:03:36,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849747281] [2022-07-12 06:03:36,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:36,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:03:36,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:03:36,205 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:03:36,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 06:03:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:36,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 06:03:36,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:03:36,548 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 06:03:36,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:03:36,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849747281] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:36,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:03:36,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-12 06:03:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335279416] [2022-07-12 06:03:36,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:36,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:03:36,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:36,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:03:36,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:03:36,585 INFO L87 Difference]: Start difference. First operand has 314 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 250 states have internal predecessors, (378), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:36,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:36,640 INFO L93 Difference]: Finished difference Result 474 states and 694 transitions. [2022-07-12 06:03:36,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:03:36,642 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2022-07-12 06:03:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:36,656 INFO L225 Difference]: With dead ends: 474 [2022-07-12 06:03:36,657 INFO L226 Difference]: Without dead ends: 307 [2022-07-12 06:03:36,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:03:36,664 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:36,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:03:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-07-12 06:03:36,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2022-07-12 06:03:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 242 states have (on average 1.5165289256198347) internal successors, (367), 243 states have internal predecessors, (367), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-12 06:03:36,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 458 transitions. [2022-07-12 06:03:36,729 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 458 transitions. Word has length 108 [2022-07-12 06:03:36,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:36,732 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 458 transitions. [2022-07-12 06:03:36,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:36,734 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 458 transitions. [2022-07-12 06:03:36,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 06:03:36,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:36,738 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:36,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 06:03:36,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-12 06:03:36,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:36,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:36,940 INFO L85 PathProgramCache]: Analyzing trace with hash -406077674, now seen corresponding path program 1 times [2022-07-12 06:03:36,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:36,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674207828] [2022-07-12 06:03:36,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:36,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:03:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:03:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:03:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 06:03:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 06:03:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:03:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:03:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:03:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:03:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:03:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:03:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 06:03:37,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:37,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674207828] [2022-07-12 06:03:37,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674207828] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:03:37,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619957619] [2022-07-12 06:03:37,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:37,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:03:37,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:03:37,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:03:37,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 06:03:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 06:03:37,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:03:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 06:03:37,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:03:37,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619957619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:37,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:03:37,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-12 06:03:37,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777473285] [2022-07-12 06:03:37,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:37,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:03:37,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:37,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:03:37,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:03:37,489 INFO L87 Difference]: Start difference. First operand 307 states and 458 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:37,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:37,520 INFO L93 Difference]: Finished difference Result 464 states and 675 transitions. [2022-07-12 06:03:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:03:37,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2022-07-12 06:03:37,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:37,525 INFO L225 Difference]: With dead ends: 464 [2022-07-12 06:03:37,525 INFO L226 Difference]: Without dead ends: 310 [2022-07-12 06:03:37,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:03:37,528 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:37,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 910 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:03:37,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-12 06:03:37,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2022-07-12 06:03:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 244 states have (on average 1.5122950819672132) internal successors, (369), 245 states have internal predecessors, (369), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-07-12 06:03:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 460 transitions. [2022-07-12 06:03:37,552 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 460 transitions. Word has length 109 [2022-07-12 06:03:37,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:37,553 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 460 transitions. [2022-07-12 06:03:37,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 460 transitions. [2022-07-12 06:03:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 06:03:37,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:37,557 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:37,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 06:03:37,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-12 06:03:37,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:37,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:37,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1521216077, now seen corresponding path program 1 times [2022-07-12 06:03:37,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:37,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56704356] [2022-07-12 06:03:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:37,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:03:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:03:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:03:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:03:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 06:03:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:03:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:03:37,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:03:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:03:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:03:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:03:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 06:03:37,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:37,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56704356] [2022-07-12 06:03:37,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56704356] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:03:37,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653250306] [2022-07-12 06:03:37,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:37,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:03:37,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:03:37,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:03:37,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 06:03:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:03:38,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:03:38,251 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 06:03:38,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:03:38,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653250306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:38,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:03:38,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-12 06:03:38,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187658178] [2022-07-12 06:03:38,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:38,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:03:38,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:38,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:03:38,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:03:38,253 INFO L87 Difference]: Start difference. First operand 309 states and 460 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:38,311 INFO L93 Difference]: Finished difference Result 648 states and 979 transitions. [2022-07-12 06:03:38,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:03:38,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2022-07-12 06:03:38,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:38,315 INFO L225 Difference]: With dead ends: 648 [2022-07-12 06:03:38,315 INFO L226 Difference]: Without dead ends: 366 [2022-07-12 06:03:38,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:03:38,319 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 107 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:38,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 885 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:03:38,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-07-12 06:03:38,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 358. [2022-07-12 06:03:38,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 282 states have (on average 1.5283687943262412) internal successors, (431), 283 states have internal predecessors, (431), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-07-12 06:03:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 544 transitions. [2022-07-12 06:03:38,372 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 544 transitions. Word has length 115 [2022-07-12 06:03:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:38,372 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 544 transitions. [2022-07-12 06:03:38,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:38,373 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 544 transitions. [2022-07-12 06:03:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 06:03:38,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:38,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:38,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 06:03:38,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:03:38,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1805215575, now seen corresponding path program 1 times [2022-07-12 06:03:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:38,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334256707] [2022-07-12 06:03:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:38,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:03:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:03:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:03:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 06:03:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 06:03:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:03:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:03:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:03:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:03:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:03:38,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:03:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:38,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 06:03:38,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:38,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334256707] [2022-07-12 06:03:38,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334256707] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:03:38,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294094557] [2022-07-12 06:03:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:38,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:03:38,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:03:38,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:03:38,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 06:03:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 06:03:39,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:03:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 06:03:39,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:03:39,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294094557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:39,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:03:39,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-12 06:03:39,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444298216] [2022-07-12 06:03:39,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:39,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:03:39,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:39,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:03:39,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:03:39,121 INFO L87 Difference]: Start difference. First operand 358 states and 544 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:03:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:39,210 INFO L93 Difference]: Finished difference Result 707 states and 1078 transitions. [2022-07-12 06:03:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:03:39,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-07-12 06:03:39,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:39,215 INFO L225 Difference]: With dead ends: 707 [2022-07-12 06:03:39,215 INFO L226 Difference]: Without dead ends: 360 [2022-07-12 06:03:39,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:03:39,217 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 125 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:39,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1651 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:03:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-12 06:03:39,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2022-07-12 06:03:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 283 states have (on average 1.5265017667844523) internal successors, (432), 285 states have internal predecessors, (432), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2022-07-12 06:03:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 547 transitions. [2022-07-12 06:03:39,246 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 547 transitions. Word has length 116 [2022-07-12 06:03:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:39,247 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 547 transitions. [2022-07-12 06:03:39,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:03:39,247 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 547 transitions. [2022-07-12 06:03:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 06:03:39,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:39,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:39,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 06:03:39,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:03:39,471 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:39,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:39,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1609367707, now seen corresponding path program 1 times [2022-07-12 06:03:39,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:39,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951985426] [2022-07-12 06:03:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:39,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 06:03:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 06:03:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 06:03:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 06:03:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:03:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:03:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:03:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:03:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:03:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:03:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,653 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 06:03:39,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:39,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951985426] [2022-07-12 06:03:39,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951985426] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:03:39,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156741071] [2022-07-12 06:03:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:39,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:03:39,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:03:39,655 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:03:39,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 06:03:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:39,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 06:03:39,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:03:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 06:03:39,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:03:39,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156741071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:39,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:03:39,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-12 06:03:39,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553266168] [2022-07-12 06:03:39,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:39,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:03:39,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:39,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:03:39,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:03:39,980 INFO L87 Difference]: Start difference. First operand 360 states and 547 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:03:40,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:40,062 INFO L93 Difference]: Finished difference Result 709 states and 1083 transitions. [2022-07-12 06:03:40,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:03:40,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2022-07-12 06:03:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:40,066 INFO L225 Difference]: With dead ends: 709 [2022-07-12 06:03:40,066 INFO L226 Difference]: Without dead ends: 362 [2022-07-12 06:03:40,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:03:40,069 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 124 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:40,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1640 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:03:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-12 06:03:40,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2022-07-12 06:03:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 284 states have (on average 1.5246478873239437) internal successors, (433), 287 states have internal predecessors, (433), 57 states have call successors, (57), 18 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2022-07-12 06:03:40,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 553 transitions. [2022-07-12 06:03:40,125 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 553 transitions. Word has length 117 [2022-07-12 06:03:40,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:40,126 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 553 transitions. [2022-07-12 06:03:40,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:03:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 553 transitions. [2022-07-12 06:03:40,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 06:03:40,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:40,133 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:40,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 06:03:40,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:03:40,360 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2099317041, now seen corresponding path program 1 times [2022-07-12 06:03:40,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:40,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116774616] [2022-07-12 06:03:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:03:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:03:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 06:03:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:03:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:03:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:03:40,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:03:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:03:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:03:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:03:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 06:03:40,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:40,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116774616] [2022-07-12 06:03:40,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116774616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:40,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:03:40,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:03:40,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122381253] [2022-07-12 06:03:40,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:40,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:03:40,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:40,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:03:40,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:03:40,493 INFO L87 Difference]: Start difference. First operand 362 states and 553 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:03:42,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:42,210 INFO L93 Difference]: Finished difference Result 851 states and 1298 transitions. [2022-07-12 06:03:42,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:03:42,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2022-07-12 06:03:42,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:42,215 INFO L225 Difference]: With dead ends: 851 [2022-07-12 06:03:42,215 INFO L226 Difference]: Without dead ends: 512 [2022-07-12 06:03:42,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:03:42,217 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 1103 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:42,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 1367 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1889 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 06:03:42,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-12 06:03:42,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 362. [2022-07-12 06:03:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 284 states have (on average 1.5246478873239437) internal successors, (433), 287 states have internal predecessors, (433), 57 states have call successors, (57), 18 states have call predecessors, (57), 20 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2022-07-12 06:03:42,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 552 transitions. [2022-07-12 06:03:42,246 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 552 transitions. Word has length 118 [2022-07-12 06:03:42,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:42,246 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 552 transitions. [2022-07-12 06:03:42,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:03:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 552 transitions. [2022-07-12 06:03:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 06:03:42,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:42,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:42,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:03:42,249 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:42,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:42,250 INFO L85 PathProgramCache]: Analyzing trace with hash 2110321279, now seen corresponding path program 2 times [2022-07-12 06:03:42,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:42,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395434601] [2022-07-12 06:03:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:42,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:03:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 06:03:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:03:42,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:03:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:03:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:03:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:03:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:03:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:03:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:03:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 06:03:42,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:42,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395434601] [2022-07-12 06:03:42,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395434601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:42,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:03:42,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:03:42,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426578661] [2022-07-12 06:03:42,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:42,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:03:42,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:42,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:03:42,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:03:42,364 INFO L87 Difference]: Start difference. First operand 362 states and 552 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:03:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:43,883 INFO L93 Difference]: Finished difference Result 853 states and 1301 transitions. [2022-07-12 06:03:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:03:43,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2022-07-12 06:03:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:43,888 INFO L225 Difference]: With dead ends: 853 [2022-07-12 06:03:43,889 INFO L226 Difference]: Without dead ends: 514 [2022-07-12 06:03:43,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:03:43,891 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 1099 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 2307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:43,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1374 Invalid, 2307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 06:03:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-12 06:03:43,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 364. [2022-07-12 06:03:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 289 states have internal predecessors, (434), 57 states have call successors, (57), 18 states have call predecessors, (57), 21 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2022-07-12 06:03:43,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 555 transitions. [2022-07-12 06:03:43,927 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 555 transitions. Word has length 119 [2022-07-12 06:03:43,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:43,929 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 555 transitions. [2022-07-12 06:03:43,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 06:03:43,930 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 555 transitions. [2022-07-12 06:03:43,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 06:03:43,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:43,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:43,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:03:43,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:43,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:43,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1209746602, now seen corresponding path program 1 times [2022-07-12 06:03:43,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:43,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411572969] [2022-07-12 06:03:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:43,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:43,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:03:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:03:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 06:03:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 06:03:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:03:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 06:03:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:03:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:03:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 06:03:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:03:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:44,098 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 06:03:44,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:44,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411572969] [2022-07-12 06:03:44,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411572969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:44,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:03:44,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 06:03:44,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734215506] [2022-07-12 06:03:44,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:44,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:03:44,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:44,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:03:44,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:03:44,100 INFO L87 Difference]: Start difference. First operand 364 states and 555 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 06:03:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:46,279 INFO L93 Difference]: Finished difference Result 851 states and 1296 transitions. [2022-07-12 06:03:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:03:46,280 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 120 [2022-07-12 06:03:46,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:46,284 INFO L225 Difference]: With dead ends: 851 [2022-07-12 06:03:46,284 INFO L226 Difference]: Without dead ends: 514 [2022-07-12 06:03:46,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-12 06:03:46,287 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 1207 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3450 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 3888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 3450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:46,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 1673 Invalid, 3888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 3450 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 06:03:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-12 06:03:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 364. [2022-07-12 06:03:46,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 289 states have internal predecessors, (434), 57 states have call successors, (57), 18 states have call predecessors, (57), 21 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2022-07-12 06:03:46,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 554 transitions. [2022-07-12 06:03:46,315 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 554 transitions. Word has length 120 [2022-07-12 06:03:46,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:46,315 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 554 transitions. [2022-07-12 06:03:46,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 06:03:46,316 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 554 transitions. [2022-07-12 06:03:46,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 06:03:46,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:46,319 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:46,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:03:46,319 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:46,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2053654144, now seen corresponding path program 2 times [2022-07-12 06:03:46,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:46,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823034758] [2022-07-12 06:03:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:46,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:03:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:03:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 06:03:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:03:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:03:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:03:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:03:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:03:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:03:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 06:03:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 06:03:46,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:46,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823034758] [2022-07-12 06:03:46,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823034758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:46,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:03:46,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 06:03:46,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714419665] [2022-07-12 06:03:46,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:46,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:03:46,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:46,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:03:46,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:03:46,461 INFO L87 Difference]: Start difference. First operand 364 states and 554 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 06:03:48,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:48,534 INFO L93 Difference]: Finished difference Result 853 states and 1302 transitions. [2022-07-12 06:03:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:03:48,537 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 121 [2022-07-12 06:03:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:48,540 INFO L225 Difference]: With dead ends: 853 [2022-07-12 06:03:48,540 INFO L226 Difference]: Without dead ends: 516 [2022-07-12 06:03:48,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-07-12 06:03:48,543 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 1211 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 3387 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:48,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 1661 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3387 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 06:03:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2022-07-12 06:03:48,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 366. [2022-07-12 06:03:48,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 286 states have (on average 1.520979020979021) internal successors, (435), 291 states have internal predecessors, (435), 57 states have call successors, (57), 18 states have call predecessors, (57), 22 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2022-07-12 06:03:48,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 560 transitions. [2022-07-12 06:03:48,572 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 560 transitions. Word has length 121 [2022-07-12 06:03:48,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:48,573 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 560 transitions. [2022-07-12 06:03:48,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-12 06:03:48,573 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 560 transitions. [2022-07-12 06:03:48,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-12 06:03:48,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:48,576 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:48,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:03:48,576 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:48,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:48,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1957721989, now seen corresponding path program 1 times [2022-07-12 06:03:48,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:48,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338077256] [2022-07-12 06:03:48,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:48,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:03:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:03:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 06:03:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 06:03:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:03:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:03:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:03:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:03:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:03:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 06:03:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:03:48,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:48,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338077256] [2022-07-12 06:03:48,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338077256] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:03:48,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560578228] [2022-07-12 06:03:48,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:48,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:03:48,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:03:48,684 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:03:48,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 06:03:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:48,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:03:48,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:03:48,937 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:03:48,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:03:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:03:48,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560578228] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:03:48,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:03:48,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-07-12 06:03:48,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155263135] [2022-07-12 06:03:48,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:03:48,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 06:03:48,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:48,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 06:03:48,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:03:48,998 INFO L87 Difference]: Start difference. First operand 366 states and 560 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 06:03:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:50,711 INFO L93 Difference]: Finished difference Result 1022 states and 1630 transitions. [2022-07-12 06:03:50,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 06:03:50,713 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 122 [2022-07-12 06:03:50,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:50,718 INFO L225 Difference]: With dead ends: 1022 [2022-07-12 06:03:50,718 INFO L226 Difference]: Without dead ends: 868 [2022-07-12 06:03:50,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:03:50,721 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 1404 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:50,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 1780 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 06:03:50,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-07-12 06:03:50,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 694. [2022-07-12 06:03:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.5872727272727272) internal successors, (873), 555 states have internal predecessors, (873), 121 states have call successors, (121), 18 states have call predecessors, (121), 22 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2022-07-12 06:03:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1136 transitions. [2022-07-12 06:03:50,770 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1136 transitions. Word has length 122 [2022-07-12 06:03:50,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:50,771 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 1136 transitions. [2022-07-12 06:03:50,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-12 06:03:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1136 transitions. [2022-07-12 06:03:50,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 06:03:50,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:50,777 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:50,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 06:03:50,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:03:50,996 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:50,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:50,996 INFO L85 PathProgramCache]: Analyzing trace with hash -221417816, now seen corresponding path program 1 times [2022-07-12 06:03:50,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:50,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595752378] [2022-07-12 06:03:50,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:50,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:03:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:03:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:03:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:03:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:03:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:03:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:03:51,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:03:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 06:03:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:03:51,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:51,097 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:03:51,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:51,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595752378] [2022-07-12 06:03:51,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595752378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:51,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:03:51,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:03:51,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209253609] [2022-07-12 06:03:51,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:51,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:03:51,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:51,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:03:51,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:03:51,100 INFO L87 Difference]: Start difference. First operand 694 states and 1136 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:52,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:52,269 INFO L93 Difference]: Finished difference Result 1803 states and 3001 transitions. [2022-07-12 06:03:52,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:03:52,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2022-07-12 06:03:52,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:52,277 INFO L225 Difference]: With dead ends: 1803 [2022-07-12 06:03:52,277 INFO L226 Difference]: Without dead ends: 1177 [2022-07-12 06:03:52,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:03:52,280 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 1098 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:52,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1245 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:03:52,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-07-12 06:03:52,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1019. [2022-07-12 06:03:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 811 states have (on average 1.6004932182490752) internal successors, (1298), 816 states have internal predecessors, (1298), 185 states have call successors, (185), 18 states have call predecessors, (185), 22 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2022-07-12 06:03:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1699 transitions. [2022-07-12 06:03:52,355 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1699 transitions. Word has length 128 [2022-07-12 06:03:52,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:52,356 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1699 transitions. [2022-07-12 06:03:52,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:52,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1699 transitions. [2022-07-12 06:03:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 06:03:52,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:52,363 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:52,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:03:52,363 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:52,364 INFO L85 PathProgramCache]: Analyzing trace with hash -928584161, now seen corresponding path program 1 times [2022-07-12 06:03:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:52,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23630533] [2022-07-12 06:03:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:52,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:03:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:03:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:03:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:03:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:03:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:03:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:03:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:03:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 06:03:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 06:03:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:03:52,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:52,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23630533] [2022-07-12 06:03:52,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23630533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:52,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:03:52,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:03:52,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108705831] [2022-07-12 06:03:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:52,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:03:52,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:52,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:03:52,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:03:52,517 INFO L87 Difference]: Start difference. First operand 1019 states and 1699 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:53,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:53,713 INFO L93 Difference]: Finished difference Result 2583 states and 4350 transitions. [2022-07-12 06:03:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:03:53,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2022-07-12 06:03:53,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:53,722 INFO L225 Difference]: With dead ends: 2583 [2022-07-12 06:03:53,723 INFO L226 Difference]: Without dead ends: 1685 [2022-07-12 06:03:53,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:03:53,727 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 1104 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:53,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 1208 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:03:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2022-07-12 06:03:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1527. [2022-07-12 06:03:53,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1224 states have (on average 1.6086601307189543) internal successors, (1969), 1229 states have internal predecessors, (1969), 280 states have call successors, (280), 18 states have call predecessors, (280), 22 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2022-07-12 06:03:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2560 transitions. [2022-07-12 06:03:53,814 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2560 transitions. Word has length 129 [2022-07-12 06:03:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:53,814 INFO L495 AbstractCegarLoop]: Abstraction has 1527 states and 2560 transitions. [2022-07-12 06:03:53,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:53,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2560 transitions. [2022-07-12 06:03:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-12 06:03:53,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:53,825 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:53,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:03:53,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1352544666, now seen corresponding path program 1 times [2022-07-12 06:03:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:53,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577674555] [2022-07-12 06:03:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:03:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:03:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 06:03:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:03:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:03:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:03:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:03:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:03:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:03:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 06:03:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:53,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:03:53,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:53,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577674555] [2022-07-12 06:03:53,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577674555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:53,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:03:53,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:03:53,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186734001] [2022-07-12 06:03:53,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:53,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:03:53,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:03:53,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:03:53,934 INFO L87 Difference]: Start difference. First operand 1527 states and 2560 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:54,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:54,992 INFO L93 Difference]: Finished difference Result 3735 states and 6359 transitions. [2022-07-12 06:03:54,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:03:54,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-07-12 06:03:54,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:55,006 INFO L225 Difference]: With dead ends: 3735 [2022-07-12 06:03:55,006 INFO L226 Difference]: Without dead ends: 2454 [2022-07-12 06:03:55,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:03:55,012 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 1085 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:55,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1223 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:03:55,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2022-07-12 06:03:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2296. [2022-07-12 06:03:55,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 1870 states have (on average 1.6149732620320856) internal successors, (3020), 1875 states have internal predecessors, (3020), 403 states have call successors, (403), 18 states have call predecessors, (403), 22 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2022-07-12 06:03:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3873 transitions. [2022-07-12 06:03:55,176 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3873 transitions. Word has length 130 [2022-07-12 06:03:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:55,176 INFO L495 AbstractCegarLoop]: Abstraction has 2296 states and 3873 transitions. [2022-07-12 06:03:55,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:55,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3873 transitions. [2022-07-12 06:03:55,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 06:03:55,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:55,188 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:55,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:03:55,189 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:55,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:55,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1387209282, now seen corresponding path program 1 times [2022-07-12 06:03:55,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:55,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909368971] [2022-07-12 06:03:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:55,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:03:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:03:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 06:03:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:03:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:03:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:03:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:03:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:03:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 06:03:55,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:03:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:55,278 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:03:55,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:55,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909368971] [2022-07-12 06:03:55,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909368971] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:55,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:03:55,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:03:55,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741646393] [2022-07-12 06:03:55,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:55,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:03:55,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:03:55,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:03:55,280 INFO L87 Difference]: Start difference. First operand 2296 states and 3873 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:56,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:56,442 INFO L93 Difference]: Finished difference Result 5529 states and 9493 transitions. [2022-07-12 06:03:56,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:03:56,448 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2022-07-12 06:03:56,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:56,467 INFO L225 Difference]: With dead ends: 5529 [2022-07-12 06:03:56,468 INFO L226 Difference]: Without dead ends: 3683 [2022-07-12 06:03:56,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:03:56,477 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 1094 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:56,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 1211 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:03:56,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2022-07-12 06:03:56,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3525. [2022-07-12 06:03:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 2920 states have (on average 1.6188356164383562) internal successors, (4727), 2925 states have internal predecessors, (4727), 582 states have call successors, (582), 18 states have call predecessors, (582), 22 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2022-07-12 06:03:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5964 transitions. [2022-07-12 06:03:56,688 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5964 transitions. Word has length 131 [2022-07-12 06:03:56,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:56,689 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 5964 transitions. [2022-07-12 06:03:56,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:56,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5964 transitions. [2022-07-12 06:03:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 06:03:56,702 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:56,702 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:56,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:03:56,703 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:56,703 INFO L85 PathProgramCache]: Analyzing trace with hash 913454026, now seen corresponding path program 1 times [2022-07-12 06:03:56,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:56,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701895453] [2022-07-12 06:03:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:56,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:03:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:03:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 06:03:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:03:56,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:03:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:03:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:03:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:03:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-12 06:03:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 06:03:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:03:56,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:56,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701895453] [2022-07-12 06:03:56,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701895453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:56,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:03:56,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:03:56,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104293830] [2022-07-12 06:03:56,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:56,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:03:56,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:56,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:03:56,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:03:56,823 INFO L87 Difference]: Start difference. First operand 3525 states and 5964 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:58,147 INFO L93 Difference]: Finished difference Result 8477 states and 14640 transitions. [2022-07-12 06:03:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:03:58,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2022-07-12 06:03:58,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:58,180 INFO L225 Difference]: With dead ends: 8477 [2022-07-12 06:03:58,180 INFO L226 Difference]: Without dead ends: 5714 [2022-07-12 06:03:58,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:03:58,193 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 1083 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:58,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 1245 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:03:58,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5714 states. [2022-07-12 06:03:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5714 to 5556. [2022-07-12 06:03:58,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 4575 states have (on average 1.6128961748633879) internal successors, (7379), 4580 states have internal predecessors, (7379), 958 states have call successors, (958), 18 states have call predecessors, (958), 22 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2022-07-12 06:03:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 9412 transitions. [2022-07-12 06:03:58,544 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 9412 transitions. Word has length 132 [2022-07-12 06:03:58,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:03:58,544 INFO L495 AbstractCegarLoop]: Abstraction has 5556 states and 9412 transitions. [2022-07-12 06:03:58,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:03:58,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 9412 transitions. [2022-07-12 06:03:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 06:03:58,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:03:58,566 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:03:58,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:03:58,567 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:03:58,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:03:58,567 INFO L85 PathProgramCache]: Analyzing trace with hash 2099398746, now seen corresponding path program 1 times [2022-07-12 06:03:58,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:03:58,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987316657] [2022-07-12 06:03:58,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:03:58,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:03:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:03:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:03:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:03:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:03:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:03:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:03:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:03:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:03:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:03:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:03:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:03:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:03:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 06:03:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 06:03:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:03:58,694 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:03:58,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:03:58,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987316657] [2022-07-12 06:03:58,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987316657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:03:58,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:03:58,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:03:58,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471641467] [2022-07-12 06:03:58,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:03:58,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:03:58,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:03:58,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:03:58,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:03:58,696 INFO L87 Difference]: Start difference. First operand 5556 states and 9412 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:04:00,312 INFO L93 Difference]: Finished difference Result 13814 states and 23861 transitions. [2022-07-12 06:04:00,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:04:00,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2022-07-12 06:04:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:04:00,374 INFO L225 Difference]: With dead ends: 13814 [2022-07-12 06:04:00,375 INFO L226 Difference]: Without dead ends: 9397 [2022-07-12 06:04:00,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:04:00,393 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 1085 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:04:00,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1219 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 984 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 06:04:00,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9397 states. [2022-07-12 06:04:00,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9397 to 9239. [2022-07-12 06:04:00,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9239 states, 7652 states have (on average 1.6106900156821746) internal successors, (12325), 7657 states have internal predecessors, (12325), 1564 states have call successors, (1564), 18 states have call predecessors, (1564), 22 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2022-07-12 06:04:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9239 states to 9239 states and 15648 transitions. [2022-07-12 06:04:00,956 INFO L78 Accepts]: Start accepts. Automaton has 9239 states and 15648 transitions. Word has length 133 [2022-07-12 06:04:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:04:00,956 INFO L495 AbstractCegarLoop]: Abstraction has 9239 states and 15648 transitions. [2022-07-12 06:04:00,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 9239 states and 15648 transitions. [2022-07-12 06:04:00,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-12 06:04:00,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:04:00,986 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:04:00,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:04:00,987 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:04:00,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:04:00,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1620420932, now seen corresponding path program 1 times [2022-07-12 06:04:00,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:04:00,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669674189] [2022-07-12 06:04:00,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:04:00,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:04:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:04:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:04:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:04:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:04:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:04:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:04:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:04:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:04:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:04:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:04:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 06:04:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 06:04:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-12 06:04:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 06:04:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:04:01,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:04:01,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669674189] [2022-07-12 06:04:01,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669674189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:04:01,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:04:01,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:04:01,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915114329] [2022-07-12 06:04:01,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:04:01,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:04:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:04:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:04:01,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:04:01,103 INFO L87 Difference]: Start difference. First operand 9239 states and 15648 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:02,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:04:02,768 INFO L93 Difference]: Finished difference Result 23998 states and 41407 transitions. [2022-07-12 06:04:02,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:04:02,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2022-07-12 06:04:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:04:02,837 INFO L225 Difference]: With dead ends: 23998 [2022-07-12 06:04:02,838 INFO L226 Difference]: Without dead ends: 16350 [2022-07-12 06:04:02,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:04:02,864 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 1088 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 1437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:04:02,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 1238 Invalid, 1437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 986 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:04:02,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16350 states. [2022-07-12 06:04:03,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16350 to 16192. [2022-07-12 06:04:03,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16192 states, 13402 states have (on average 1.601775854350097) internal successors, (21467), 13407 states have internal predecessors, (21467), 2767 states have call successors, (2767), 18 states have call predecessors, (2767), 22 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2022-07-12 06:04:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16192 states to 16192 states and 27340 transitions. [2022-07-12 06:04:03,723 INFO L78 Accepts]: Start accepts. Automaton has 16192 states and 27340 transitions. Word has length 134 [2022-07-12 06:04:03,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:04:03,723 INFO L495 AbstractCegarLoop]: Abstraction has 16192 states and 27340 transitions. [2022-07-12 06:04:03,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 16192 states and 27340 transitions. [2022-07-12 06:04:03,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 06:04:03,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:04:03,759 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:04:03,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 06:04:03,759 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:04:03,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:04:03,760 INFO L85 PathProgramCache]: Analyzing trace with hash -71748903, now seen corresponding path program 1 times [2022-07-12 06:04:03,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:04:03,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365256795] [2022-07-12 06:04:03,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:04:03,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:04:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:04:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:04:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:04:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:04:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:04:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:04:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:04:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:04:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:04:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:04:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:04:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 06:04:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 06:04:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 06:04:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:04:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:04:03,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365256795] [2022-07-12 06:04:03,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365256795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:04:03,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:04:03,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:04:03,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658596540] [2022-07-12 06:04:03,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:04:03,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:04:03,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:04:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:04:03,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:04:03,884 INFO L87 Difference]: Start difference. First operand 16192 states and 27340 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:04:06,090 INFO L93 Difference]: Finished difference Result 42964 states and 74006 transitions. [2022-07-12 06:04:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:04:06,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2022-07-12 06:04:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:04:06,256 INFO L225 Difference]: With dead ends: 42964 [2022-07-12 06:04:06,256 INFO L226 Difference]: Without dead ends: 29005 [2022-07-12 06:04:06,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:04:06,322 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 1085 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:04:06,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1212 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:04:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29005 states. [2022-07-12 06:04:07,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29005 to 28847. [2022-07-12 06:04:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28847 states, 24018 states have (on average 1.5975934715629945) internal successors, (38371), 24023 states have internal predecessors, (38371), 4806 states have call successors, (4806), 18 states have call predecessors, (4806), 22 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2022-07-12 06:04:08,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28847 states to 28847 states and 48596 transitions. [2022-07-12 06:04:08,026 INFO L78 Accepts]: Start accepts. Automaton has 28847 states and 48596 transitions. Word has length 135 [2022-07-12 06:04:08,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:04:08,026 INFO L495 AbstractCegarLoop]: Abstraction has 28847 states and 48596 transitions. [2022-07-12 06:04:08,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 28847 states and 48596 transitions. [2022-07-12 06:04:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-12 06:04:08,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:04:08,063 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:04:08,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:04:08,064 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:04:08,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:04:08,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1737476538, now seen corresponding path program 1 times [2022-07-12 06:04:08,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:04:08,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462103321] [2022-07-12 06:04:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:04:08,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:04:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:04:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:04:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:04:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:04:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:04:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:04:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:04:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:04:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:04:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:04:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:04:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 06:04:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 06:04:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 06:04:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:04:08,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:04:08,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462103321] [2022-07-12 06:04:08,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462103321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:04:08,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:04:08,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:04:08,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12742378] [2022-07-12 06:04:08,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:04:08,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:04:08,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:04:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:04:08,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:04:08,156 INFO L87 Difference]: Start difference. First operand 28847 states and 48596 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:04:11,057 INFO L93 Difference]: Finished difference Result 78726 states and 134765 transitions. [2022-07-12 06:04:11,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:04:11,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2022-07-12 06:04:11,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:04:11,295 INFO L225 Difference]: With dead ends: 78726 [2022-07-12 06:04:11,296 INFO L226 Difference]: Without dead ends: 52884 [2022-07-12 06:04:11,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:04:11,384 INFO L413 NwaCegarLoop]: 586 mSDtfsCounter, 1078 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:04:11,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 1231 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:04:11,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52884 states. [2022-07-12 06:04:13,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52884 to 52726. [2022-07-12 06:04:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52726 states, 44182 states have (on average 1.5920510615182653) internal successors, (70340), 44187 states have internal predecessors, (70340), 8521 states have call successors, (8521), 18 states have call predecessors, (8521), 22 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2022-07-12 06:04:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52726 states to 52726 states and 88527 transitions. [2022-07-12 06:04:14,301 INFO L78 Accepts]: Start accepts. Automaton has 52726 states and 88527 transitions. Word has length 136 [2022-07-12 06:04:14,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:04:14,302 INFO L495 AbstractCegarLoop]: Abstraction has 52726 states and 88527 transitions. [2022-07-12 06:04:14,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:14,302 INFO L276 IsEmpty]: Start isEmpty. Operand 52726 states and 88527 transitions. [2022-07-12 06:04:14,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-12 06:04:14,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:04:14,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:04:14,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 06:04:14,360 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:04:14,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:04:14,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1452520601, now seen corresponding path program 1 times [2022-07-12 06:04:14,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:04:14,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932879041] [2022-07-12 06:04:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:04:14,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:04:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:04:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:04:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:04:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:04:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:04:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:04:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:04:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:04:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:04:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:04:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:04:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:04:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 06:04:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 06:04:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:14,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:04:14,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:04:14,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932879041] [2022-07-12 06:04:14,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932879041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:04:14,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:04:14,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:04:14,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311977798] [2022-07-12 06:04:14,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:04:14,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:04:14,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:04:14,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:04:14,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:04:14,478 INFO L87 Difference]: Start difference. First operand 52726 states and 88527 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:18,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:04:18,435 INFO L93 Difference]: Finished difference Result 98497 states and 168952 transitions. [2022-07-12 06:04:18,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:04:18,436 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2022-07-12 06:04:18,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:04:18,801 INFO L225 Difference]: With dead ends: 98497 [2022-07-12 06:04:18,801 INFO L226 Difference]: Without dead ends: 98343 [2022-07-12 06:04:18,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-07-12 06:04:18,848 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 1081 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:04:18,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 1213 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:04:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98343 states. [2022-07-12 06:04:22,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98343 to 98185. [2022-07-12 06:04:23,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98185 states, 82842 states have (on average 1.5850655464619396) internal successors, (131310), 82847 states have internal predecessors, (131310), 15320 states have call successors, (15320), 18 states have call predecessors, (15320), 22 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2022-07-12 06:04:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98185 states to 98185 states and 164141 transitions. [2022-07-12 06:04:23,578 INFO L78 Accepts]: Start accepts. Automaton has 98185 states and 164141 transitions. Word has length 137 [2022-07-12 06:04:23,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:04:23,578 INFO L495 AbstractCegarLoop]: Abstraction has 98185 states and 164141 transitions. [2022-07-12 06:04:23,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:23,579 INFO L276 IsEmpty]: Start isEmpty. Operand 98185 states and 164141 transitions. [2022-07-12 06:04:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-12 06:04:23,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:04:23,640 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:04:23,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 06:04:23,640 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:04:23,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:04:23,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1217673285, now seen corresponding path program 1 times [2022-07-12 06:04:23,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:04:23,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983244048] [2022-07-12 06:04:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:04:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:04:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:04:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:04:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:04:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:04:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:04:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:04:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:04:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:04:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:04:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:04:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:04:23,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 06:04:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 06:04:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-12 06:04:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:23,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:04:23,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:04:23,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983244048] [2022-07-12 06:04:23,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983244048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:04:23,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:04:23,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:04:23,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331814383] [2022-07-12 06:04:23,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:04:23,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:04:23,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:04:23,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:04:23,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:04:23,748 INFO L87 Difference]: Start difference. First operand 98185 states and 164141 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:28,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:04:28,158 INFO L93 Difference]: Finished difference Result 98481 states and 167841 transitions. [2022-07-12 06:04:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 06:04:28,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2022-07-12 06:04:28,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:04:28,531 INFO L225 Difference]: With dead ends: 98481 [2022-07-12 06:04:28,531 INFO L226 Difference]: Without dead ends: 98335 [2022-07-12 06:04:28,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2022-07-12 06:04:28,577 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 1047 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 2155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 06:04:28,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1506 Invalid, 2155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 06:04:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98335 states. [2022-07-12 06:04:32,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98335 to 98185. [2022-07-12 06:04:32,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98185 states, 82842 states have (on average 1.5850534752903116) internal successors, (131309), 82847 states have internal predecessors, (131309), 15320 states have call successors, (15320), 18 states have call predecessors, (15320), 22 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2022-07-12 06:04:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98185 states to 98185 states and 164140 transitions. [2022-07-12 06:04:33,124 INFO L78 Accepts]: Start accepts. Automaton has 98185 states and 164140 transitions. Word has length 138 [2022-07-12 06:04:33,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:04:33,124 INFO L495 AbstractCegarLoop]: Abstraction has 98185 states and 164140 transitions. [2022-07-12 06:04:33,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-12 06:04:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 98185 states and 164140 transitions. [2022-07-12 06:04:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 06:04:33,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:04:33,188 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:04:33,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 06:04:33,188 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:04:33,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:04:33,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1770088573, now seen corresponding path program 1 times [2022-07-12 06:04:33,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:04:33,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609755239] [2022-07-12 06:04:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:04:33,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:04:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:04:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:04:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:04:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:04:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:04:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:04:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:04:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:04:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:04:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:04:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:04:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:04:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 06:04:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-12 06:04:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-12 06:04:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:04:33,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:04:33,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609755239] [2022-07-12 06:04:33,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609755239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:04:33,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:04:33,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 06:04:33,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411174874] [2022-07-12 06:04:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:04:33,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 06:04:33,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:04:33,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 06:04:33,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:04:33,337 INFO L87 Difference]: Start difference. First operand 98185 states and 164140 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 06:04:39,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:04:39,308 INFO L93 Difference]: Finished difference Result 99021 states and 168625 transitions. [2022-07-12 06:04:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 06:04:39,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 145 [2022-07-12 06:04:39,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:04:39,833 INFO L225 Difference]: With dead ends: 99021 [2022-07-12 06:04:39,833 INFO L226 Difference]: Without dead ends: 98875 [2022-07-12 06:04:39,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2022-07-12 06:04:39,906 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 2109 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 3305 mSolverCounterSat, 1108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2123 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 4413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1108 IncrementalHoareTripleChecker+Valid, 3305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:04:39,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2123 Valid, 1631 Invalid, 4413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1108 Valid, 3305 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 06:04:40,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98875 states. [2022-07-12 06:04:44,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98875 to 98333. [2022-07-12 06:04:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98333 states, 82960 states have (on average 1.584811957569913) internal successors, (131476), 82965 states have internal predecessors, (131476), 15338 states have call successors, (15338), 28 states have call predecessors, (15338), 34 states have return successors, (17532), 15339 states have call predecessors, (17532), 15336 states have call successors, (17532) [2022-07-12 06:04:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98333 states to 98333 states and 164346 transitions. [2022-07-12 06:04:44,676 INFO L78 Accepts]: Start accepts. Automaton has 98333 states and 164346 transitions. Word has length 145 [2022-07-12 06:04:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:04:44,677 INFO L495 AbstractCegarLoop]: Abstraction has 98333 states and 164346 transitions. [2022-07-12 06:04:44,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 06:04:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 98333 states and 164346 transitions. [2022-07-12 06:04:44,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 06:04:44,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:04:44,736 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:04:44,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 06:04:44,736 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:04:44,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:04:44,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1606633112, now seen corresponding path program 1 times [2022-07-12 06:04:44,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:04:44,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081935892] [2022-07-12 06:04:44,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:04:44,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:04:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:44,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:04:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:44,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:04:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:44,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:04:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:04:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:44,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:04:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:44,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:04:44,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:44,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:04:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:44,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:04:44,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:04:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:45,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:04:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:45,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:04:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:45,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 06:04:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:45,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 06:04:45,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:45,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-12 06:04:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:45,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-12 06:04:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:04:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:04:45,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:04:45,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081935892] [2022-07-12 06:04:45,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081935892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:04:45,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:04:45,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-12 06:04:45,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598326449] [2022-07-12 06:04:45,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:04:45,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 06:04:45,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:04:45,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 06:04:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:04:45,242 INFO L87 Difference]: Start difference. First operand 98333 states and 164346 transitions. Second operand has 17 states, 15 states have (on average 6.733333333333333) internal successors, (101), 12 states have internal predecessors, (101), 8 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15)