./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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_product28.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 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 14:55:25,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 14:55:25,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 14:55:25,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 14:55:25,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 14:55:25,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 14:55:25,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 14:55:25,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 14:55:25,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 14:55:25,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 14:55:25,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 14:55:25,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 14:55:25,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 14:55:25,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 14:55:25,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 14:55:25,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 14:55:25,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 14:55:25,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 14:55:25,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 14:55:25,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 14:55:25,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 14:55:25,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 14:55:25,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 14:55:25,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 14:55:25,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 14:55:25,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 14:55:25,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 14:55:25,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 14:55:25,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 14:55:25,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 14:55:25,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 14:55:25,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 14:55:25,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 14:55:25,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 14:55:25,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 14:55:25,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 14:55:25,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 14:55:25,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 14:55:25,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 14:55:25,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 14:55:25,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 14:55:25,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 14:55:25,354 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 14:55:25,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 14:55:25,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 14:55:25,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 14:55:25,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 14:55:25,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 14:55:25,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 14:55:25,357 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 14:55:25,357 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 14:55:25,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 14:55:25,358 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 14:55:25,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 14:55:25,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 14:55:25,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 14:55:25,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 14:55:25,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 14:55:25,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 14:55:25,359 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 14:55:25,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 14:55:25,359 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 14:55:25,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 14:55:25,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 14:55:25,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 14:55:25,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 14:55:25,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:55:25,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 14:55:25,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 14:55:25,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 14:55:25,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 14:55:25,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 14:55:25,361 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 14:55:25,361 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 14:55:25,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 14:55:25,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 14:55:25,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fb12138b73b283c9fdc444b2c9ebb4aa3340005d69e98d463fd0b0beb9c1e74 [2021-12-17 14:55:25,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 14:55:25,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 14:55:25,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 14:55:25,553 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 14:55:25,553 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 14:55:25,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2021-12-17 14:55:25,597 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a1c6b085/9b265c55f4fe4aae859d2b29a17515b2/FLAG759ab9efd [2021-12-17 14:55:25,995 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 14:55:25,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product28.cil.c [2021-12-17 14:55:26,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a1c6b085/9b265c55f4fe4aae859d2b29a17515b2/FLAG759ab9efd [2021-12-17 14:55:26,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a1c6b085/9b265c55f4fe4aae859d2b29a17515b2 [2021-12-17 14:55:26,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 14:55:26,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 14:55:26,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 14:55:26,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 14:55:26,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 14:55:26,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:26,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1707fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26, skipping insertion in model container [2021-12-17 14:55:26,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:26,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 14:55:26,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 14:55:26,751 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_product28.cil.c[32786,32799] [2021-12-17 14:55:26,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:55:26,829 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 14:55:26,895 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_product28.cil.c[32786,32799] [2021-12-17 14:55:26,932 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 14:55:26,950 INFO L208 MainTranslator]: Completed translation [2021-12-17 14:55:26,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26 WrapperNode [2021-12-17 14:55:26,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 14:55:26,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 14:55:26,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 14:55:26,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 14:55:26,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:26,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:27,069 INFO L137 Inliner]: procedures = 128, calls = 209, calls flagged for inlining = 54, calls inlined = 45, statements flattened = 861 [2021-12-17 14:55:27,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 14:55:27,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 14:55:27,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 14:55:27,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 14:55:27,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:27,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:27,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:27,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:27,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:27,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:27,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:27,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 14:55:27,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 14:55:27,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 14:55:27,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 14:55:27,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26" (1/1) ... [2021-12-17 14:55:27,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 14:55:27,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:55:27,177 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) [2021-12-17 14:55:27,212 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 [2021-12-17 14:55:27,239 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-17 14:55:27,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-17 14:55:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-17 14:55:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-17 14:55:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-17 14:55:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-17 14:55:27,240 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-17 14:55:27,241 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-17 14:55:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-17 14:55:27,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-17 14:55:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-17 14:55:27,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-17 14:55:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-17 14:55:27,242 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-17 14:55:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-17 14:55:27,242 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-17 14:55:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-17 14:55:27,242 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-17 14:55:27,243 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-17 14:55:27,243 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-17 14:55:27,243 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-17 14:55:27,243 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-17 14:55:27,243 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-17 14:55:27,243 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-17 14:55:27,243 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-17 14:55:27,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 14:55:27,244 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-17 14:55:27,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-17 14:55:27,244 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-17 14:55:27,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-17 14:55:27,244 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-17 14:55:27,244 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-17 14:55:27,244 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-17 14:55:27,245 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-17 14:55:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-17 14:55:27,245 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-17 14:55:27,245 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-17 14:55:27,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-17 14:55:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-17 14:55:27,246 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-17 14:55:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-17 14:55:27,246 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-17 14:55:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-17 14:55:27,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-17 14:55:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-17 14:55:27,247 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-17 14:55:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 14:55:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-17 14:55:27,247 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-17 14:55:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 14:55:27,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 14:55:27,428 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 14:55:27,429 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 14:55:27,932 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 14:55:27,938 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 14:55:27,938 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 14:55:27,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:55:27 BoogieIcfgContainer [2021-12-17 14:55:27,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 14:55:27,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 14:55:27,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 14:55:27,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 14:55:27,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:55:26" (1/3) ... [2021-12-17 14:55:27,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5749d822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:55:27, skipping insertion in model container [2021-12-17 14:55:27,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:55:26" (2/3) ... [2021-12-17 14:55:27,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5749d822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:55:27, skipping insertion in model container [2021-12-17 14:55:27,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:55:27" (3/3) ... [2021-12-17 14:55:27,953 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.c [2021-12-17 14:55:27,957 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 14:55:27,957 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 14:55:27,998 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 14:55:28,008 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 14:55:28,008 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 14:55:28,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 334 states, 258 states have (on average 1.5193798449612403) internal successors, (392), 262 states have internal predecessors, (392), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-17 14:55:28,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-17 14:55:28,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:28,044 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:28,044 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:28,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1749849167, now seen corresponding path program 1 times [2021-12-17 14:55:28,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:28,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23399174] [2021-12-17 14:55:28,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:28,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:28,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:55:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:55:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:55:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 14:55:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:55:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:55:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:55:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:55:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 14:55:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:55:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:55:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:55:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-17 14:55:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 14:55:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-17 14:55:28,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:28,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23399174] [2021-12-17 14:55:28,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23399174] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:55:28,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352712116] [2021-12-17 14:55:28,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:28,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:55:28,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:55:28,391 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) [2021-12-17 14:55:28,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 14:55:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:28,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1166 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 14:55:28,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:55:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-17 14:55:28,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:55:28,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352712116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:28,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:55:28,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2021-12-17 14:55:28,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534788303] [2021-12-17 14:55:28,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:28,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 14:55:28,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:28,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 14:55:28,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 14:55:28,932 INFO L87 Difference]: Start difference. First operand has 334 states, 258 states have (on average 1.5193798449612403) internal successors, (392), 262 states have internal predecessors, (392), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:28,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:28,976 INFO L93 Difference]: Finished difference Result 519 states and 750 transitions. [2021-12-17 14:55:28,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 14:55:28,978 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 139 [2021-12-17 14:55:28,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:28,987 INFO L225 Difference]: With dead ends: 519 [2021-12-17 14:55:28,988 INFO L226 Difference]: Without dead ends: 327 [2021-12-17 14:55:28,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 14:55:28,994 INFO L933 BasicCegarLoop]: 490 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, 490 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 [2021-12-17 14:55:28,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:55:29,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-17 14:55:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-12-17 14:55:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 252 states have (on average 1.5119047619047619) internal successors, (381), 255 states have internal predecessors, (381), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-17 14:55:29,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 482 transitions. [2021-12-17 14:55:29,041 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 482 transitions. Word has length 139 [2021-12-17 14:55:29,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:29,042 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 482 transitions. [2021-12-17 14:55:29,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 482 transitions. [2021-12-17 14:55:29,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-17 14:55:29,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:29,047 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:29,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 14:55:29,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-17 14:55:29,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:29,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1360645034, now seen corresponding path program 1 times [2021-12-17 14:55:29,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:29,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981443192] [2021-12-17 14:55:29,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:29,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:55:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:55:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:55:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-17 14:55:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:55:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:55:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:55:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:55:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:55:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:55:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:55:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:55:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 14:55:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 14:55:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-17 14:55:29,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:29,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981443192] [2021-12-17 14:55:29,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981443192] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:55:29,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666166096] [2021-12-17 14:55:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:29,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:55:29,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:55:29,442 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) [2021-12-17 14:55:29,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 14:55:29,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:29,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-17 14:55:29,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:55:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-17 14:55:29,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:55:29,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666166096] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:29,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:55:29,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-17 14:55:29,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064273022] [2021-12-17 14:55:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:29,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:55:29,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:55:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:55:29,948 INFO L87 Difference]: Start difference. First operand 327 states and 482 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:29,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:29,979 INFO L93 Difference]: Finished difference Result 509 states and 731 transitions. [2021-12-17 14:55:29,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:55:29,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 140 [2021-12-17 14:55:29,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:29,983 INFO L225 Difference]: With dead ends: 509 [2021-12-17 14:55:29,983 INFO L226 Difference]: Without dead ends: 330 [2021-12-17 14:55:29,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:55:29,985 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 1 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 958 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 [2021-12-17 14:55:29,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 958 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:55:29,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-17 14:55:30,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 329. [2021-12-17 14:55:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 254 states have (on average 1.5078740157480315) internal successors, (383), 257 states have internal predecessors, (383), 51 states have call successors, (51), 23 states have call predecessors, (51), 23 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2021-12-17 14:55:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 484 transitions. [2021-12-17 14:55:30,010 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 484 transitions. Word has length 140 [2021-12-17 14:55:30,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:30,011 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 484 transitions. [2021-12-17 14:55:30,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 484 transitions. [2021-12-17 14:55:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-17 14:55:30,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:30,017 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:30,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 14:55:30,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-17 14:55:30,234 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:30,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:30,234 INFO L85 PathProgramCache]: Analyzing trace with hash 440032415, now seen corresponding path program 1 times [2021-12-17 14:55:30,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:30,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32201997] [2021-12-17 14:55:30,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:30,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:55:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:55:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:55:30,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-17 14:55:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 14:55:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:55:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:55:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:55:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:55:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:55:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:55:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-17 14:55:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 14:55:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-17 14:55:30,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 14:55:30,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:30,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32201997] [2021-12-17 14:55:30,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32201997] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:55:30,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637194113] [2021-12-17 14:55:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:30,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:55:30,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:55:30,366 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) [2021-12-17 14:55:30,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 14:55:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:30,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:55:30,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:55:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-17 14:55:30,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:55:30,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637194113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:30,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:55:30,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-17 14:55:30,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163673223] [2021-12-17 14:55:30,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:30,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 14:55:30,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:30,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 14:55:30,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:55:30,801 INFO L87 Difference]: Start difference. First operand 329 states and 484 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:30,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:30,844 INFO L93 Difference]: Finished difference Result 683 states and 1019 transitions. [2021-12-17 14:55:30,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 14:55:30,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 146 [2021-12-17 14:55:30,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:30,848 INFO L225 Difference]: With dead ends: 683 [2021-12-17 14:55:30,848 INFO L226 Difference]: Without dead ends: 381 [2021-12-17 14:55:30,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 14:55:30,851 INFO L933 BasicCegarLoop]: 499 mSDtfsCounter, 99 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 934 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 [2021-12-17 14:55:30,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 934 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:55:30,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-12-17 14:55:30,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 373. [2021-12-17 14:55:30,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 287 states have (on average 1.5226480836236933) internal successors, (437), 290 states have internal predecessors, (437), 62 states have call successors, (62), 23 states have call predecessors, (62), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2021-12-17 14:55:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 560 transitions. [2021-12-17 14:55:30,881 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 560 transitions. Word has length 146 [2021-12-17 14:55:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:30,881 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 560 transitions. [2021-12-17 14:55:30,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:30,882 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 560 transitions. [2021-12-17 14:55:30,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-17 14:55:30,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:30,884 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:30,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 14:55:31,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:55:31,105 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:31,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:31,105 INFO L85 PathProgramCache]: Analyzing trace with hash -782479930, now seen corresponding path program 1 times [2021-12-17 14:55:31,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:31,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548483743] [2021-12-17 14:55:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:31,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-17 14:55:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-17 14:55:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-17 14:55:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-17 14:55:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 14:55:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:55:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:55:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:55:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 14:55:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:55:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:55:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 14:55:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 14:55:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:55:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 14:55:31,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:31,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548483743] [2021-12-17 14:55:31,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548483743] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:55:31,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266931612] [2021-12-17 14:55:31,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:31,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:55:31,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:55:31,270 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) [2021-12-17 14:55:31,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 14:55:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:31,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 14:55:31,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:55:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 14:55:31,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:55:31,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266931612] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:31,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:55:31,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-17 14:55:31,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583517775] [2021-12-17 14:55:31,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:31,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:55:31,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:31,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:55:31,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:55:31,720 INFO L87 Difference]: Start difference. First operand 373 states and 560 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:55:31,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:31,768 INFO L93 Difference]: Finished difference Result 737 states and 1110 transitions. [2021-12-17 14:55:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:55:31,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 147 [2021-12-17 14:55:31,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:31,771 INFO L225 Difference]: With dead ends: 737 [2021-12-17 14:55:31,771 INFO L226 Difference]: Without dead ends: 375 [2021-12-17 14:55:31,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-17 14:55:31,773 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 117 mSDsluCounter, 1283 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:31,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 1756 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:55:31,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-17 14:55:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 375. [2021-12-17 14:55:31,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 288 states have (on average 1.5208333333333333) internal successors, (438), 292 states have internal predecessors, (438), 62 states have call successors, (62), 23 states have call predecessors, (62), 24 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2021-12-17 14:55:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 563 transitions. [2021-12-17 14:55:31,816 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 563 transitions. Word has length 147 [2021-12-17 14:55:31,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:31,817 INFO L470 AbstractCegarLoop]: Abstraction has 375 states and 563 transitions. [2021-12-17 14:55:31,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:55:31,817 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 563 transitions. [2021-12-17 14:55:31,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-17 14:55:31,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:31,829 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:31,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 14:55:32,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:55:32,039 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:32,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:32,040 INFO L85 PathProgramCache]: Analyzing trace with hash -860675365, now seen corresponding path program 1 times [2021-12-17 14:55:32,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:32,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224880725] [2021-12-17 14:55:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:32,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-17 14:55:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-17 14:55:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-17 14:55:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:55:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:55:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:55:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:55:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 14:55:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:55:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 14:55:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-17 14:55:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-17 14:55:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-17 14:55:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,172 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 14:55:32,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:32,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224880725] [2021-12-17 14:55:32,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224880725] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:55:32,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818372294] [2021-12-17 14:55:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:32,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:55:32,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:55:32,174 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) [2021-12-17 14:55:32,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 14:55:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 14:55:32,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:55:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-17 14:55:32,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 14:55:32,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818372294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:32,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 14:55:32,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2021-12-17 14:55:32,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224523825] [2021-12-17 14:55:32,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:32,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 14:55:32,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:32,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 14:55:32,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:55:32,559 INFO L87 Difference]: Start difference. First operand 375 states and 563 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:55:32,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:32,605 INFO L93 Difference]: Finished difference Result 739 states and 1115 transitions. [2021-12-17 14:55:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 14:55:32,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 148 [2021-12-17 14:55:32,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:32,608 INFO L225 Difference]: With dead ends: 739 [2021-12-17 14:55:32,608 INFO L226 Difference]: Without dead ends: 377 [2021-12-17 14:55:32,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:55:32,610 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 116 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:32,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 1745 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 14:55:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-12-17 14:55:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-12-17 14:55:32,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 289 states have (on average 1.519031141868512) internal successors, (439), 294 states have internal predecessors, (439), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2021-12-17 14:55:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 569 transitions. [2021-12-17 14:55:32,623 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 569 transitions. Word has length 148 [2021-12-17 14:55:32,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:32,624 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 569 transitions. [2021-12-17 14:55:32,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:55:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 569 transitions. [2021-12-17 14:55:32,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-17 14:55:32,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:32,626 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:32,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 14:55:32,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:55:32,844 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:32,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:32,845 INFO L85 PathProgramCache]: Analyzing trace with hash -331605216, now seen corresponding path program 1 times [2021-12-17 14:55:32,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:32,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780948053] [2021-12-17 14:55:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:32,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:32,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-17 14:55:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-17 14:55:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:55:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:55:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:55:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 14:55:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 14:55:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:32,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:55:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:33,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 14:55:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-17 14:55:33,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-17 14:55:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:33,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-17 14:55:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 14:55:33,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:33,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780948053] [2021-12-17 14:55:33,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780948053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:33,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:33,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 14:55:33,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775150491] [2021-12-17 14:55:33,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:33,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:55:33,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:55:33,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 14:55:33,034 INFO L87 Difference]: Start difference. First operand 377 states and 569 transitions. Second operand has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:55:33,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:33,892 INFO L93 Difference]: Finished difference Result 804 states and 1220 transitions. [2021-12-17 14:55:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:55:33,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 149 [2021-12-17 14:55:33,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:33,898 INFO L225 Difference]: With dead ends: 804 [2021-12-17 14:55:33,898 INFO L226 Difference]: Without dead ends: 450 [2021-12-17 14:55:33,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:55:33,901 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 958 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:33,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 1307 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1287 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 14:55:33,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-12-17 14:55:33,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 377. [2021-12-17 14:55:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 289 states have (on average 1.519031141868512) internal successors, (439), 294 states have internal predecessors, (439), 62 states have call successors, (62), 23 states have call predecessors, (62), 25 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2021-12-17 14:55:33,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 568 transitions. [2021-12-17 14:55:33,953 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 568 transitions. Word has length 149 [2021-12-17 14:55:33,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:33,953 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 568 transitions. [2021-12-17 14:55:33,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:55:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 568 transitions. [2021-12-17 14:55:33,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-17 14:55:33,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:33,956 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:33,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 14:55:33,957 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:33,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1164230253, now seen corresponding path program 2 times [2021-12-17 14:55:33,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:33,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989969126] [2021-12-17 14:55:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:33,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 14:55:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-17 14:55:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 14:55:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:55:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:55:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:55:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 14:55:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:55:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 14:55:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:55:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-17 14:55:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 14:55:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:34,122 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 14:55:34,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:34,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989969126] [2021-12-17 14:55:34,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989969126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:34,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:34,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 14:55:34,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311565931] [2021-12-17 14:55:34,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:34,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:55:34,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:34,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:55:34,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 14:55:34,124 INFO L87 Difference]: Start difference. First operand 377 states and 568 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:55:35,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:35,076 INFO L93 Difference]: Finished difference Result 806 states and 1223 transitions. [2021-12-17 14:55:35,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 14:55:35,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 150 [2021-12-17 14:55:35,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:35,080 INFO L225 Difference]: With dead ends: 806 [2021-12-17 14:55:35,080 INFO L226 Difference]: Without dead ends: 452 [2021-12-17 14:55:35,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:55:35,082 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 964 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:35,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 1299 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:55:35,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-12-17 14:55:35,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2021-12-17 14:55:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 296 states have internal predecessors, (440), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (69), 61 states have call predecessors, (69), 61 states have call successors, (69) [2021-12-17 14:55:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 571 transitions. [2021-12-17 14:55:35,106 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 571 transitions. Word has length 150 [2021-12-17 14:55:35,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:35,107 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 571 transitions. [2021-12-17 14:55:35,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:55:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 571 transitions. [2021-12-17 14:55:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-17 14:55:35,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:35,110 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:35,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 14:55:35,110 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:35,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:35,111 INFO L85 PathProgramCache]: Analyzing trace with hash -896990777, now seen corresponding path program 1 times [2021-12-17 14:55:35,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:35,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139282645] [2021-12-17 14:55:35,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:35,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:55:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:55:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:55:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:55:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:55:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:55:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 14:55:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 14:55:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:55:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-17 14:55:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 14:55:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:35,215 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 14:55:35,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:35,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139282645] [2021-12-17 14:55:35,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139282645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:35,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:35,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 14:55:35,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111110586] [2021-12-17 14:55:35,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:35,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 14:55:35,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:35,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 14:55:35,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 14:55:35,217 INFO L87 Difference]: Start difference. First operand 379 states and 571 transitions. Second operand has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:55:36,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:36,080 INFO L93 Difference]: Finished difference Result 806 states and 1222 transitions. [2021-12-17 14:55:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:55:36,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 151 [2021-12-17 14:55:36,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:36,083 INFO L225 Difference]: With dead ends: 806 [2021-12-17 14:55:36,084 INFO L226 Difference]: Without dead ends: 452 [2021-12-17 14:55:36,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-12-17 14:55:36,086 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 952 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:36,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [970 Valid, 1309 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 14:55:36,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-12-17 14:55:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2021-12-17 14:55:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 296 states have internal predecessors, (440), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (69), 61 states have call predecessors, (69), 61 states have call successors, (69) [2021-12-17 14:55:36,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 571 transitions. [2021-12-17 14:55:36,111 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 571 transitions. Word has length 151 [2021-12-17 14:55:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:36,111 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 571 transitions. [2021-12-17 14:55:36,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (20), 5 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-17 14:55:36,111 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 571 transitions. [2021-12-17 14:55:36,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-17 14:55:36,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:36,113 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:36,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 14:55:36,114 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:36,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1469044293, now seen corresponding path program 1 times [2021-12-17 14:55:36,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:36,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756180511] [2021-12-17 14:55:36,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:36,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 14:55:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:55:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:55:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:55:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:55:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:55:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 14:55:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 14:55:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:55:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-17 14:55:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 14:55:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 14:55:36,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:36,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756180511] [2021-12-17 14:55:36,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756180511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:36,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:36,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 14:55:36,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394148175] [2021-12-17 14:55:36,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:36,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:55:36,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:36,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:55:36,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:55:36,305 INFO L87 Difference]: Start difference. First operand 379 states and 571 transitions. Second operand has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-17 14:55:37,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:37,692 INFO L93 Difference]: Finished difference Result 804 states and 1217 transitions. [2021-12-17 14:55:37,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:55:37,693 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 151 [2021-12-17 14:55:37,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:37,695 INFO L225 Difference]: With dead ends: 804 [2021-12-17 14:55:37,695 INFO L226 Difference]: Without dead ends: 452 [2021-12-17 14:55:37,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:55:37,696 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 1036 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:37,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1036 Valid, 1743 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 2476 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 14:55:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-12-17 14:55:37,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 379. [2021-12-17 14:55:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 290 states have (on average 1.5172413793103448) internal successors, (440), 296 states have internal predecessors, (440), 62 states have call successors, (62), 23 states have call predecessors, (62), 26 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2021-12-17 14:55:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 570 transitions. [2021-12-17 14:55:37,724 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 570 transitions. Word has length 151 [2021-12-17 14:55:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:37,725 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 570 transitions. [2021-12-17 14:55:37,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.5) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-17 14:55:37,725 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 570 transitions. [2021-12-17 14:55:37,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-17 14:55:37,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:37,727 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:37,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 14:55:37,728 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:37,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:37,728 INFO L85 PathProgramCache]: Analyzing trace with hash 2010311812, now seen corresponding path program 2 times [2021-12-17 14:55:37,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:37,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160040986] [2021-12-17 14:55:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:37,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-17 14:55:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 14:55:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:55:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:55:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:55:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:55:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:55:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:55:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 14:55:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-17 14:55:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-17 14:55:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 14:55:37,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:37,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160040986] [2021-12-17 14:55:37,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160040986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:37,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:37,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 14:55:37,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753158507] [2021-12-17 14:55:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:37,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 14:55:37,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:37,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 14:55:37,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-17 14:55:37,891 INFO L87 Difference]: Start difference. First operand 379 states and 570 transitions. Second operand has 11 states, 10 states have (on average 9.6) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-17 14:55:39,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:39,091 INFO L93 Difference]: Finished difference Result 806 states and 1223 transitions. [2021-12-17 14:55:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 14:55:39,092 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.6) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 152 [2021-12-17 14:55:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:39,094 INFO L225 Difference]: With dead ends: 806 [2021-12-17 14:55:39,094 INFO L226 Difference]: Without dead ends: 454 [2021-12-17 14:55:39,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-12-17 14:55:39,096 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 1056 mSDsluCounter, 1255 mSDsCounter, 0 mSdLazyCounter, 2435 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:39,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 1725 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 2435 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 14:55:39,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-12-17 14:55:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 381. [2021-12-17 14:55:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 291 states have (on average 1.5154639175257731) internal successors, (441), 298 states have internal predecessors, (441), 62 states have call successors, (62), 23 states have call predecessors, (62), 27 states have return successors, (73), 61 states have call predecessors, (73), 61 states have call successors, (73) [2021-12-17 14:55:39,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 576 transitions. [2021-12-17 14:55:39,128 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 576 transitions. Word has length 152 [2021-12-17 14:55:39,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:39,129 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 576 transitions. [2021-12-17 14:55:39,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.6) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (20), 5 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-17 14:55:39,129 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 576 transitions. [2021-12-17 14:55:39,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-17 14:55:39,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:39,131 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:39,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 14:55:39,131 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:39,132 INFO L85 PathProgramCache]: Analyzing trace with hash -986725718, now seen corresponding path program 1 times [2021-12-17 14:55:39,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:39,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658448665] [2021-12-17 14:55:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:39,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-17 14:55:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:55:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:55:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:55:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 14:55:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:55:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:55:39,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:55:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 14:55:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:55:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-17 14:55:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,207 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:39,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:39,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658448665] [2021-12-17 14:55:39,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658448665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:55:39,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948410568] [2021-12-17 14:55:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:39,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:55:39,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:55:39,209 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) [2021-12-17 14:55:39,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 14:55:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:39,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 14:55:39,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:55:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:39,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 14:55:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:39,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948410568] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 14:55:39,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 14:55:39,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2021-12-17 14:55:39,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522688534] [2021-12-17 14:55:39,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 14:55:39,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 14:55:39,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:39,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 14:55:39,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:55:39,830 INFO L87 Difference]: Start difference. First operand 381 states and 576 transitions. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-17 14:55:40,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:40,741 INFO L93 Difference]: Finished difference Result 960 states and 1521 transitions. [2021-12-17 14:55:40,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 14:55:40,742 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 153 [2021-12-17 14:55:40,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:40,745 INFO L225 Difference]: With dead ends: 960 [2021-12-17 14:55:40,745 INFO L226 Difference]: Without dead ends: 781 [2021-12-17 14:55:40,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-17 14:55:40,746 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 1307 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 427 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:40,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1352 Valid, 1523 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:55:40,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-12-17 14:55:40,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 684. [2021-12-17 14:55:40,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 530 states have (on average 1.5830188679245283) internal successors, (839), 537 states have internal predecessors, (839), 126 states have call successors, (126), 23 states have call predecessors, (126), 27 states have return successors, (147), 125 states have call predecessors, (147), 125 states have call successors, (147) [2021-12-17 14:55:40,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1112 transitions. [2021-12-17 14:55:40,774 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1112 transitions. Word has length 153 [2021-12-17 14:55:40,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:40,774 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 1112 transitions. [2021-12-17 14:55:40,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 7 states have internal predecessors, (135), 2 states have call successors, (40), 5 states have call predecessors, (40), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-17 14:55:40,774 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1112 transitions. [2021-12-17 14:55:40,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-17 14:55:40,777 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:40,777 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:40,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 14:55:40,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:55:40,996 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:40,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:40,996 INFO L85 PathProgramCache]: Analyzing trace with hash -194088249, now seen corresponding path program 1 times [2021-12-17 14:55:40,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:40,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548924486] [2021-12-17 14:55:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:40,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:41,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:41,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-17 14:55:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 14:55:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:55:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:55:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-17 14:55:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:55:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 14:55:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 14:55:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-17 14:55:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-17 14:55:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-17 14:55:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:41,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:41,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548924486] [2021-12-17 14:55:41,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548924486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:41,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:41,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:55:41,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917918434] [2021-12-17 14:55:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:41,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:55:41,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:41,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:55:41,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:55:41,098 INFO L87 Difference]: Start difference. First operand 684 states and 1112 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:41,898 INFO L93 Difference]: Finished difference Result 1681 states and 2800 transitions. [2021-12-17 14:55:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:55:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 159 [2021-12-17 14:55:41,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:41,904 INFO L225 Difference]: With dead ends: 1681 [2021-12-17 14:55:41,904 INFO L226 Difference]: Without dead ends: 1065 [2021-12-17 14:55:41,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:55:41,906 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 937 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:41,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 1117 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 14:55:41,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2021-12-17 14:55:41,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 984. [2021-12-17 14:55:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 766 states have (on average 1.597911227154047) internal successors, (1224), 773 states have internal predecessors, (1224), 190 states have call successors, (190), 23 states have call predecessors, (190), 27 states have return successors, (221), 189 states have call predecessors, (221), 189 states have call successors, (221) [2021-12-17 14:55:41,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1635 transitions. [2021-12-17 14:55:41,947 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1635 transitions. Word has length 159 [2021-12-17 14:55:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:41,948 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1635 transitions. [2021-12-17 14:55:41,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1635 transitions. [2021-12-17 14:55:41,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-17 14:55:41,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:41,953 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:41,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 14:55:41,954 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:41,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1989444475, now seen corresponding path program 1 times [2021-12-17 14:55:41,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:41,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811935187] [2021-12-17 14:55:41,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:41,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:42,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-17 14:55:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-17 14:55:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:55:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 14:55:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 14:55:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:55:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:55:42,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-17 14:55:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-17 14:55:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-17 14:55:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-17 14:55:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:42,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:42,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811935187] [2021-12-17 14:55:42,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811935187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:42,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:42,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:55:42,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034370628] [2021-12-17 14:55:42,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:42,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:55:42,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:55:42,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:55:42,063 INFO L87 Difference]: Start difference. First operand 984 states and 1635 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:42,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:42,810 INFO L93 Difference]: Finished difference Result 2396 states and 4045 transitions. [2021-12-17 14:55:42,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:55:42,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 160 [2021-12-17 14:55:42,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:42,818 INFO L225 Difference]: With dead ends: 2396 [2021-12-17 14:55:42,818 INFO L226 Difference]: Without dead ends: 1533 [2021-12-17 14:55:42,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:55:42,824 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 923 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:42,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 1098 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 14:55:42,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2021-12-17 14:55:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1452. [2021-12-17 14:55:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1139 states have (on average 1.6075504828797191) internal successors, (1831), 1146 states have internal predecessors, (1831), 285 states have call successors, (285), 23 states have call predecessors, (285), 27 states have return successors, (316), 284 states have call predecessors, (316), 284 states have call successors, (316) [2021-12-17 14:55:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2432 transitions. [2021-12-17 14:55:42,884 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2432 transitions. Word has length 160 [2021-12-17 14:55:42,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:42,885 INFO L470 AbstractCegarLoop]: Abstraction has 1452 states and 2432 transitions. [2021-12-17 14:55:42,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2432 transitions. [2021-12-17 14:55:42,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-17 14:55:42,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:42,892 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:42,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 14:55:42,893 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:42,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:42,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1091927209, now seen corresponding path program 1 times [2021-12-17 14:55:42,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:42,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595038417] [2021-12-17 14:55:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:42,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-17 14:55:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-17 14:55:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:55:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:55:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-17 14:55:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:55:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:42,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:55:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 14:55:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-17 14:55:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-17 14:55:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-17 14:55:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:43,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:43,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595038417] [2021-12-17 14:55:43,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595038417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:43,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:43,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:55:43,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242718982] [2021-12-17 14:55:43,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:43,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:55:43,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:43,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:55:43,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:55:43,009 INFO L87 Difference]: Start difference. First operand 1452 states and 2432 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:43,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:43,696 INFO L93 Difference]: Finished difference Result 3443 states and 5886 transitions. [2021-12-17 14:55:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:55:43,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 161 [2021-12-17 14:55:43,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:43,706 INFO L225 Difference]: With dead ends: 3443 [2021-12-17 14:55:43,706 INFO L226 Difference]: Without dead ends: 2237 [2021-12-17 14:55:43,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:55:43,710 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 927 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:43,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 1061 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 14:55:43,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2237 states. [2021-12-17 14:55:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2237 to 2156. [2021-12-17 14:55:43,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 1720 states have (on average 1.6151162790697675) internal successors, (2778), 1727 states have internal predecessors, (2778), 408 states have call successors, (408), 23 states have call predecessors, (408), 27 states have return successors, (455), 407 states have call predecessors, (455), 407 states have call successors, (455) [2021-12-17 14:55:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 3641 transitions. [2021-12-17 14:55:43,802 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 3641 transitions. Word has length 161 [2021-12-17 14:55:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:43,803 INFO L470 AbstractCegarLoop]: Abstraction has 2156 states and 3641 transitions. [2021-12-17 14:55:43,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 3641 transitions. [2021-12-17 14:55:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-17 14:55:43,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:43,812 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:43,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 14:55:43,812 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:43,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1160293020, now seen corresponding path program 1 times [2021-12-17 14:55:43,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:43,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113626698] [2021-12-17 14:55:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:43,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-17 14:55:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-17 14:55:43,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-17 14:55:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:55:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-17 14:55:43,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 14:55:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:55:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-17 14:55:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-17 14:55:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-17 14:55:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 14:55:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:43,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:43,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113626698] [2021-12-17 14:55:43,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113626698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:43,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:43,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:55:43,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016450141] [2021-12-17 14:55:43,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:43,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:55:43,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:55:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:55:43,900 INFO L87 Difference]: Start difference. First operand 2156 states and 3641 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:44,638 INFO L93 Difference]: Finished difference Result 5062 states and 8740 transitions. [2021-12-17 14:55:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:55:44,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2021-12-17 14:55:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:44,652 INFO L225 Difference]: With dead ends: 5062 [2021-12-17 14:55:44,652 INFO L226 Difference]: Without dead ends: 3356 [2021-12-17 14:55:44,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:55:44,659 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 895 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:44,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 1087 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 14:55:44,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3356 states. [2021-12-17 14:55:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3356 to 3275. [2021-12-17 14:55:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 2660 states have (on average 1.619924812030075) internal successors, (4309), 2667 states have internal predecessors, (4309), 587 states have call successors, (587), 23 states have call predecessors, (587), 27 states have return successors, (660), 586 states have call predecessors, (660), 586 states have call successors, (660) [2021-12-17 14:55:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5556 transitions. [2021-12-17 14:55:44,800 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5556 transitions. Word has length 162 [2021-12-17 14:55:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:44,800 INFO L470 AbstractCegarLoop]: Abstraction has 3275 states and 5556 transitions. [2021-12-17 14:55:44,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5556 transitions. [2021-12-17 14:55:44,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-17 14:55:44,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:44,813 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:44,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 14:55:44,813 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:44,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:44,814 INFO L85 PathProgramCache]: Analyzing trace with hash -2049543131, now seen corresponding path program 1 times [2021-12-17 14:55:44,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:44,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819585717] [2021-12-17 14:55:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:44,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-17 14:55:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-17 14:55:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 14:55:44,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:55:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-17 14:55:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 14:55:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:55:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-17 14:55:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-17 14:55:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-17 14:55:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-17 14:55:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:44,886 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:44,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:44,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819585717] [2021-12-17 14:55:44,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819585717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:44,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:44,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:55:44,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566290180] [2021-12-17 14:55:44,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:44,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:55:44,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:44,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:55:44,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:55:44,888 INFO L87 Difference]: Start difference. First operand 3275 states and 5556 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:45,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:45,711 INFO L93 Difference]: Finished difference Result 7980 states and 13839 transitions. [2021-12-17 14:55:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:55:45,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 163 [2021-12-17 14:55:45,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:45,735 INFO L225 Difference]: With dead ends: 7980 [2021-12-17 14:55:45,735 INFO L226 Difference]: Without dead ends: 5387 [2021-12-17 14:55:45,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:55:45,744 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 953 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:45,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 1067 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 14:55:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5387 states. [2021-12-17 14:55:45,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5387 to 5306. [2021-12-17 14:55:45,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5306 states, 4315 states have (on average 1.613209733487833) internal successors, (6961), 4322 states have internal predecessors, (6961), 963 states have call successors, (963), 23 states have call predecessors, (963), 27 states have return successors, (1080), 962 states have call predecessors, (1080), 962 states have call successors, (1080) [2021-12-17 14:55:45,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5306 states to 5306 states and 9004 transitions. [2021-12-17 14:55:45,990 INFO L78 Accepts]: Start accepts. Automaton has 5306 states and 9004 transitions. Word has length 163 [2021-12-17 14:55:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:45,991 INFO L470 AbstractCegarLoop]: Abstraction has 5306 states and 9004 transitions. [2021-12-17 14:55:45,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:45,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5306 states and 9004 transitions. [2021-12-17 14:55:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-17 14:55:46,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:46,013 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:46,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 14:55:46,013 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2045579040, now seen corresponding path program 1 times [2021-12-17 14:55:46,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:46,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122662386] [2021-12-17 14:55:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:46,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 14:55:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-17 14:55:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-17 14:55:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-17 14:55:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-17 14:55:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-17 14:55:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-17 14:55:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-17 14:55:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-17 14:55:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-17 14:55:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-17 14:55:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:46,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:46,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122662386] [2021-12-17 14:55:46,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122662386] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:46,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:46,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:55:46,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674931244] [2021-12-17 14:55:46,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:46,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:55:46,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:46,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:55:46,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:55:46,098 INFO L87 Difference]: Start difference. First operand 5306 states and 9004 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:47,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:47,009 INFO L93 Difference]: Finished difference Result 13122 states and 22748 transitions. [2021-12-17 14:55:47,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:55:47,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 164 [2021-12-17 14:55:47,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:47,053 INFO L225 Difference]: With dead ends: 13122 [2021-12-17 14:55:47,053 INFO L226 Difference]: Without dead ends: 8875 [2021-12-17 14:55:47,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:55:47,065 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 933 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:47,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [949 Valid, 1055 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 14:55:47,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8875 states. [2021-12-17 14:55:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8875 to 8794. [2021-12-17 14:55:47,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8794 states, 7197 states have (on average 1.6110879533138809) internal successors, (11595), 7204 states have internal predecessors, (11595), 1569 states have call successors, (1569), 23 states have call predecessors, (1569), 27 states have return successors, (1764), 1568 states have call predecessors, (1764), 1568 states have call successors, (1764) [2021-12-17 14:55:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8794 states to 8794 states and 14928 transitions. [2021-12-17 14:55:47,531 INFO L78 Accepts]: Start accepts. Automaton has 8794 states and 14928 transitions. Word has length 164 [2021-12-17 14:55:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:47,531 INFO L470 AbstractCegarLoop]: Abstraction has 8794 states and 14928 transitions. [2021-12-17 14:55:47,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:47,532 INFO L276 IsEmpty]: Start isEmpty. Operand 8794 states and 14928 transitions. [2021-12-17 14:55:47,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-17 14:55:47,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:47,568 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:47,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 14:55:47,569 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:47,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1857828889, now seen corresponding path program 1 times [2021-12-17 14:55:47,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:47,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022972511] [2021-12-17 14:55:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:47,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-17 14:55:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 14:55:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 14:55:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 14:55:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-17 14:55:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-17 14:55:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-17 14:55:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-17 14:55:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-17 14:55:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-17 14:55:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-17 14:55:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:47,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:47,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022972511] [2021-12-17 14:55:47,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022972511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:47,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:47,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:55:47,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301605082] [2021-12-17 14:55:47,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:47,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:55:47,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:47,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:55:47,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:55:47,646 INFO L87 Difference]: Start difference. First operand 8794 states and 14928 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:48,671 INFO L93 Difference]: Finished difference Result 22781 states and 39454 transitions. [2021-12-17 14:55:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:55:48,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2021-12-17 14:55:48,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:48,713 INFO L225 Difference]: With dead ends: 22781 [2021-12-17 14:55:48,713 INFO L226 Difference]: Without dead ends: 15468 [2021-12-17 14:55:48,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:55:48,731 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 927 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:48,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 1110 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 14:55:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15468 states. [2021-12-17 14:55:49,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15468 to 15387. [2021-12-17 14:55:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15387 states, 12587 states have (on average 1.6017319456582189) internal successors, (20161), 12594 states have internal predecessors, (20161), 2772 states have call successors, (2772), 23 states have call predecessors, (2772), 27 states have return successors, (3111), 2771 states have call predecessors, (3111), 2771 states have call successors, (3111) [2021-12-17 14:55:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15387 states to 15387 states and 26044 transitions. [2021-12-17 14:55:49,444 INFO L78 Accepts]: Start accepts. Automaton has 15387 states and 26044 transitions. Word has length 165 [2021-12-17 14:55:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:49,445 INFO L470 AbstractCegarLoop]: Abstraction has 15387 states and 26044 transitions. [2021-12-17 14:55:49,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:49,445 INFO L276 IsEmpty]: Start isEmpty. Operand 15387 states and 26044 transitions. [2021-12-17 14:55:49,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-17 14:55:49,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:49,489 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:49,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 14:55:49,490 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:49,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash -404028959, now seen corresponding path program 1 times [2021-12-17 14:55:49,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:49,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545822623] [2021-12-17 14:55:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:49,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-17 14:55:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-17 14:55:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-17 14:55:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-17 14:55:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-17 14:55:49,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-17 14:55:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-17 14:55:49,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-17 14:55:49,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-17 14:55:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-17 14:55:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-17 14:55:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:49,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:49,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545822623] [2021-12-17 14:55:49,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545822623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:49,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:49,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:55:49,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311934552] [2021-12-17 14:55:49,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:49,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:55:49,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:49,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:55:49,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:55:49,579 INFO L87 Difference]: Start difference. First operand 15387 states and 26044 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:51,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:51,082 INFO L93 Difference]: Finished difference Result 40737 states and 70437 transitions. [2021-12-17 14:55:51,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:55:51,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 166 [2021-12-17 14:55:51,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:51,172 INFO L225 Difference]: With dead ends: 40737 [2021-12-17 14:55:51,173 INFO L226 Difference]: Without dead ends: 27438 [2021-12-17 14:55:51,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:55:51,209 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 893 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:51,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [908 Valid, 1087 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 14:55:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27438 states. [2021-12-17 14:55:52,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27438 to 27357. [2021-12-17 14:55:52,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27357 states, 22518 states have (on average 1.5973443467448263) internal successors, (35969), 22525 states have internal predecessors, (35969), 4811 states have call successors, (4811), 23 states have call predecessors, (4811), 27 states have return successors, (5424), 4810 states have call predecessors, (5424), 4810 states have call successors, (5424) [2021-12-17 14:55:52,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27357 states to 27357 states and 46204 transitions. [2021-12-17 14:55:52,481 INFO L78 Accepts]: Start accepts. Automaton has 27357 states and 46204 transitions. Word has length 166 [2021-12-17 14:55:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:52,482 INFO L470 AbstractCegarLoop]: Abstraction has 27357 states and 46204 transitions. [2021-12-17 14:55:52,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 27357 states and 46204 transitions. [2021-12-17 14:55:52,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-17 14:55:52,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:52,540 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:52,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 14:55:52,541 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:52,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:52,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1407538167, now seen corresponding path program 1 times [2021-12-17 14:55:52,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:52,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147108397] [2021-12-17 14:55:52,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:52,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:52,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-17 14:55:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 14:55:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-17 14:55:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-17 14:55:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-17 14:55:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-17 14:55:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-17 14:55:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-17 14:55:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-17 14:55:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-17 14:55:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-17 14:55:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:52,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:52,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147108397] [2021-12-17 14:55:52,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147108397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:52,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:52,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:55:52,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660902959] [2021-12-17 14:55:52,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:52,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:55:52,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:52,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:55:52,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:55:52,646 INFO L87 Difference]: Start difference. First operand 27357 states and 46204 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:55:54,870 INFO L93 Difference]: Finished difference Result 74524 states and 128036 transitions. [2021-12-17 14:55:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:55:54,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 167 [2021-12-17 14:55:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:55:55,031 INFO L225 Difference]: With dead ends: 74524 [2021-12-17 14:55:55,031 INFO L226 Difference]: Without dead ends: 49987 [2021-12-17 14:55:55,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:55:55,092 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 917 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 933 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 14:55:55,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [933 Valid, 1080 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 14:55:55,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49987 states. [2021-12-17 14:55:57,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49987 to 49906. [2021-12-17 14:55:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49906 states, 41352 states have (on average 1.5914586960727413) internal successors, (65810), 41359 states have internal predecessors, (65810), 8526 states have call successors, (8526), 23 states have call predecessors, (8526), 27 states have return successors, (9671), 8525 states have call predecessors, (9671), 8525 states have call successors, (9671) [2021-12-17 14:55:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49906 states to 49906 states and 84007 transitions. [2021-12-17 14:55:57,628 INFO L78 Accepts]: Start accepts. Automaton has 49906 states and 84007 transitions. Word has length 167 [2021-12-17 14:55:57,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:55:57,628 INFO L470 AbstractCegarLoop]: Abstraction has 49906 states and 84007 transitions. [2021-12-17 14:55:57,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:55:57,628 INFO L276 IsEmpty]: Start isEmpty. Operand 49906 states and 84007 transitions. [2021-12-17 14:55:57,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-17 14:55:57,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:55:57,705 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:55:57,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 14:55:57,706 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:55:57,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:55:57,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2075398847, now seen corresponding path program 1 times [2021-12-17 14:55:57,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:55:57,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962863513] [2021-12-17 14:55:57,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:55:57,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:55:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:55:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:55:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:55:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:55:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:55:57,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:55:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-17 14:55:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-17 14:55:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-17 14:55:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-17 14:55:57,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-17 14:55:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-17 14:55:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-17 14:55:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-17 14:55:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:55:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-17 14:55:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-17 14:55:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-17 14:55:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:55:57,790 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 14:55:57,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:55:57,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962863513] [2021-12-17 14:55:57,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962863513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 14:55:57,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 14:55:57,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 14:55:57,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875597396] [2021-12-17 14:55:57,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 14:55:57,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 14:55:57,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:55:57,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 14:55:57,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 14:55:57,792 INFO L87 Difference]: Start difference. First operand 49906 states and 84007 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:56:01,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 14:56:01,188 INFO L93 Difference]: Finished difference Result 93010 states and 160167 transitions. [2021-12-17 14:56:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 14:56:01,188 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 168 [2021-12-17 14:56:01,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 14:56:01,541 INFO L225 Difference]: With dead ends: 93010 [2021-12-17 14:56:01,541 INFO L226 Difference]: Without dead ends: 92831 [2021-12-17 14:56:01,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-17 14:56:01,582 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 925 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 14:56:01,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 1069 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 14:56:01,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92831 states. [2021-12-17 14:56:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92831 to 92750. [2021-12-17 14:56:05,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92750 states, 77397 states have (on average 1.5839890435029782) internal successors, (122596), 77404 states have internal predecessors, (122596), 15325 states have call successors, (15325), 23 states have call predecessors, (15325), 27 states have return successors, (17516), 15324 states have call predecessors, (17516), 15324 states have call successors, (17516) [2021-12-17 14:56:06,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92750 states to 92750 states and 155437 transitions. [2021-12-17 14:56:06,472 INFO L78 Accepts]: Start accepts. Automaton has 92750 states and 155437 transitions. Word has length 168 [2021-12-17 14:56:06,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 14:56:06,472 INFO L470 AbstractCegarLoop]: Abstraction has 92750 states and 155437 transitions. [2021-12-17 14:56:06,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (20), 5 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-17 14:56:06,473 INFO L276 IsEmpty]: Start isEmpty. Operand 92750 states and 155437 transitions. [2021-12-17 14:56:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-17 14:56:06,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 14:56:06,589 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 14:56:06,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 14:56:06,589 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 14:56:06,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 14:56:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash -305648440, now seen corresponding path program 1 times [2021-12-17 14:56:06,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 14:56:06,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985077111] [2021-12-17 14:56:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:56:06,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 14:56:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-17 14:56:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-17 14:56:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 14:56:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-17 14:56:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-17 14:56:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-17 14:56:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-17 14:56:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-17 14:56:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 14:56:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-17 14:56:06,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-17 14:56:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-17 14:56:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-17 14:56:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-17 14:56:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 14:56:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-17 14:56:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-17 14:56:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-17 14:56:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 14:56:06,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 14:56:06,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985077111] [2021-12-17 14:56:06,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985077111] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 14:56:06,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391496695] [2021-12-17 14:56:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 14:56:06,821 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 14:56:06,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 14:56:06,836 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 14:56:06,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 14:56:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 14:56:07,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 14:56:07,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 14:56:07,385 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-17 14:56:07,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 14:56:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-17 14:56:07,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391496695] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 14:56:07,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 14:56:07,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 30 [2021-12-17 14:56:07,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267629413] [2021-12-17 14:56:07,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 14:56:07,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-17 14:56:07,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 14:56:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-17 14:56:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2021-12-17 14:56:07,843 INFO L87 Difference]: Start difference. First operand 92750 states and 155437 transitions. Second operand has 30 states, 29 states have (on average 9.068965517241379) internal successors, (263), 23 states have internal predecessors, (263), 9 states have call successors, (51), 11 states have call predecessors, (51), 11 states have return successors, (45), 11 states have call predecessors, (45), 9 states have call successors, (45)