./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_spec7_product31.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 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 00:51:55,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 00:51:55,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 00:51:55,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 00:51:55,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 00:51:55,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 00:51:55,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 00:51:55,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 00:51:55,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 00:51:55,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 00:51:55,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 00:51:55,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 00:51:55,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 00:51:55,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 00:51:55,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 00:51:55,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 00:51:55,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 00:51:55,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 00:51:55,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 00:51:55,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 00:51:55,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 00:51:55,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 00:51:55,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 00:51:55,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 00:51:55,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 00:51:55,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 00:51:55,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 00:51:55,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 00:51:55,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 00:51:55,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 00:51:55,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 00:51:55,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 00:51:55,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 00:51:55,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 00:51:55,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 00:51:55,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 00:51:55,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 00:51:55,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 00:51:55,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 00:51:55,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 00:51:55,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 00:51:55,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 00:51:55,345 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 00:51:55,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 00:51:55,346 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 00:51:55,346 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 00:51:55,347 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 00:51:55,347 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 00:51:55,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 00:51:55,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 00:51:55,349 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 00:51:55,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 00:51:55,350 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 00:51:55,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 00:51:55,350 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 00:51:55,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 00:51:55,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 00:51:55,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 00:51:55,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 00:51:55,351 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 00:51:55,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 00:51:55,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 00:51:55,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 00:51:55,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 00:51:55,353 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 00:51:55,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 00:51:55,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:51:55,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 00:51:55,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 00:51:55,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 00:51:55,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 00:51:55,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 00:51:55,362 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 00:51:55,362 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 00:51:55,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 00:51:55,363 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 [2021-12-28 00:51:55,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 00:51:55,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 00:51:55,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 00:51:55,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 00:51:55,708 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 00:51:55,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2021-12-28 00:51:55,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42fe089bc/f07aeb7dc543437381fd75ad5e1d8aba/FLAGcdefd8bbc [2021-12-28 00:51:56,312 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 00:51:56,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2021-12-28 00:51:56,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42fe089bc/f07aeb7dc543437381fd75ad5e1d8aba/FLAGcdefd8bbc [2021-12-28 00:51:56,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42fe089bc/f07aeb7dc543437381fd75ad5e1d8aba [2021-12-28 00:51:56,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 00:51:56,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 00:51:56,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 00:51:56,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 00:51:56,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 00:51:56,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:51:56" (1/1) ... [2021-12-28 00:51:56,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a85f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:56, skipping insertion in model container [2021-12-28 00:51:56,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:51:56" (1/1) ... [2021-12-28 00:51:56,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 00:51:56,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 00:51:56,961 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_spec7_product31.cil.c[7290,7303] [2021-12-28 00:51:57,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:51:57,232 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 00:51:57,259 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_spec7_product31.cil.c[7290,7303] [2021-12-28 00:51:57,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:51:57,373 INFO L208 MainTranslator]: Completed translation [2021-12-28 00:51:57,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57 WrapperNode [2021-12-28 00:51:57,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 00:51:57,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 00:51:57,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 00:51:57,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 00:51:57,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57" (1/1) ... [2021-12-28 00:51:57,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57" (1/1) ... [2021-12-28 00:51:57,473 INFO L137 Inliner]: procedures = 131, calls = 215, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1005 [2021-12-28 00:51:57,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 00:51:57,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 00:51:57,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 00:51:57,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 00:51:57,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57" (1/1) ... [2021-12-28 00:51:57,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57" (1/1) ... [2021-12-28 00:51:57,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57" (1/1) ... [2021-12-28 00:51:57,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57" (1/1) ... [2021-12-28 00:51:57,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57" (1/1) ... [2021-12-28 00:51:57,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57" (1/1) ... [2021-12-28 00:51:57,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57" (1/1) ... [2021-12-28 00:51:57,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 00:51:57,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 00:51:57,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 00:51:57,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 00:51:57,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57" (1/1) ... [2021-12-28 00:51:57,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:51:57,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:51:57,596 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) [2021-12-28 00:51:57,604 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 [2021-12-28 00:51:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-28 00:51:57,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-28 00:51:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-28 00:51:57,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-28 00:51:57,624 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-28 00:51:57,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-28 00:51:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-28 00:51:57,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-28 00:51:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-28 00:51:57,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-28 00:51:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-28 00:51:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-28 00:51:57,630 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-28 00:51:57,630 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-28 00:51:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-28 00:51:57,631 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-28 00:51:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-28 00:51:57,631 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-28 00:51:57,631 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-28 00:51:57,631 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-28 00:51:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-28 00:51:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-28 00:51:57,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-28 00:51:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-28 00:51:57,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-28 00:51:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 00:51:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-28 00:51:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-28 00:51:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-28 00:51:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-28 00:51:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-28 00:51:57,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-28 00:51:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-28 00:51:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-28 00:51:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-28 00:51:57,634 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-28 00:51:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-28 00:51:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-28 00:51:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-28 00:51:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-28 00:51:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-28 00:51:57,635 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-28 00:51:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-28 00:51:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-28 00:51:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-28 00:51:57,636 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-28 00:51:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 00:51:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-28 00:51:57,637 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-28 00:51:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 00:51:57,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 00:51:57,905 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 00:51:57,907 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 00:51:58,565 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 00:51:58,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 00:51:58,574 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 00:51:58,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:51:58 BoogieIcfgContainer [2021-12-28 00:51:58,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 00:51:58,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 00:51:58,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 00:51:58,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 00:51:58,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 12:51:56" (1/3) ... [2021-12-28 00:51:58,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc3d90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:51:58, skipping insertion in model container [2021-12-28 00:51:58,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:51:57" (2/3) ... [2021-12-28 00:51:58,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc3d90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:51:58, skipping insertion in model container [2021-12-28 00:51:58,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:51:58" (3/3) ... [2021-12-28 00:51:58,584 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product31.cil.c [2021-12-28 00:51:58,588 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 00:51:58,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 00:51:58,633 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 00:51:58,638 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 [2021-12-28 00:51:58,639 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 00:51:58,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 366 states, 283 states have (on average 1.5017667844522968) internal successors, (425), 287 states have internal predecessors, (425), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-12-28 00:51:58,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-28 00:51:58,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:51:58,678 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-28 00:51:58,679 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:51:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:51:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1669286504, now seen corresponding path program 1 times [2021-12-28 00:51:58,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:51:58,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500088135] [2021-12-28 00:51:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:51:58,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:51:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:58,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:51:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:51:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:51:59,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:51:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:51:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:51:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 00:51:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 00:51:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:51:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:51:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:51:59,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:51:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:51:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:51:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:51:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:51:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,218 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:51:59,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:51:59,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500088135] [2021-12-28 00:51:59,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500088135] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:51:59,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520925378] [2021-12-28 00:51:59,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:51:59,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:51:59,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:51:59,222 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) [2021-12-28 00:51:59,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 00:51:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:51:59,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 1115 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 00:51:59,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:51:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-28 00:51:59,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:51:59,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520925378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:51:59,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:51:59,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-28 00:51:59,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069751991] [2021-12-28 00:51:59,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:51:59,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 00:51:59,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:51:59,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 00:51:59,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:51:59,953 INFO L87 Difference]: Start difference. First operand has 366 states, 283 states have (on average 1.5017667844522968) internal successors, (425), 287 states have internal predecessors, (425), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:00,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:00,010 INFO L93 Difference]: Finished difference Result 578 states and 836 transitions. [2021-12-28 00:52:00,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 00:52:00,013 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 120 [2021-12-28 00:52:00,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:00,030 INFO L225 Difference]: With dead ends: 578 [2021-12-28 00:52:00,030 INFO L226 Difference]: Without dead ends: 359 [2021-12-28 00:52:00,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:52:00,039 INFO L933 BasicCegarLoop]: 537 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, 537 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 [2021-12-28 00:52:00,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:52:00,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-28 00:52:00,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2021-12-28 00:52:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.4945848375451263) internal successors, (414), 280 states have internal predecessors, (414), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-12-28 00:52:00,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 529 transitions. [2021-12-28 00:52:00,105 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 529 transitions. Word has length 120 [2021-12-28 00:52:00,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:00,106 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 529 transitions. [2021-12-28 00:52:00,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.5) internal successors, (65), 2 states have internal predecessors, (65), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 529 transitions. [2021-12-28 00:52:00,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-28 00:52:00,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:00,112 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-28 00:52:00,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 00:52:00,338 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 [2021-12-28 00:52:00,338 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:00,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:00,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1463241793, now seen corresponding path program 1 times [2021-12-28 00:52:00,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:00,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351850810] [2021-12-28 00:52:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:00,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:00,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:52:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:52:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:52:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 00:52:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 00:52:00,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:52:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:52:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:52:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:52:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:52:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:52:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:52:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,610 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:52:00,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:00,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351850810] [2021-12-28 00:52:00,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351850810] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:52:00,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255762950] [2021-12-28 00:52:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:00,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:52:00,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:52:00,620 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) [2021-12-28 00:52:00,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 00:52:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:00,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1116 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 00:52:00,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:52:01,141 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-28 00:52:01,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:52:01,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255762950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:01,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:52:01,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:52:01,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372897931] [2021-12-28 00:52:01,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:01,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:52:01,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:01,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:52:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:52:01,144 INFO L87 Difference]: Start difference. First operand 359 states and 529 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:01,218 INFO L93 Difference]: Finished difference Result 568 states and 817 transitions. [2021-12-28 00:52:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:52:01,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 121 [2021-12-28 00:52:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:01,223 INFO L225 Difference]: With dead ends: 568 [2021-12-28 00:52:01,223 INFO L226 Difference]: Without dead ends: 362 [2021-12-28 00:52:01,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:52:01,226 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 1 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1052 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 [2021-12-28 00:52:01,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1052 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:52:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-12-28 00:52:01,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 361. [2021-12-28 00:52:01,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 279 states have (on average 1.4910394265232976) internal successors, (416), 282 states have internal predecessors, (416), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-12-28 00:52:01,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 531 transitions. [2021-12-28 00:52:01,263 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 531 transitions. Word has length 121 [2021-12-28 00:52:01,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:01,263 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 531 transitions. [2021-12-28 00:52:01,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:01,264 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 531 transitions. [2021-12-28 00:52:01,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-28 00:52:01,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:01,266 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-28 00:52:01,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-28 00:52:01,476 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 [2021-12-28 00:52:01,477 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:01,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:01,477 INFO L85 PathProgramCache]: Analyzing trace with hash 473633432, now seen corresponding path program 1 times [2021-12-28 00:52:01,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:01,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687770756] [2021-12-28 00:52:01,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:01,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:52:01,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:52:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:52:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 00:52:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:52:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:52:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:52:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:52:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:52:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:52:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:52:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:52:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:52:01,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:01,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687770756] [2021-12-28 00:52:01,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687770756] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:52:01,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458189999] [2021-12-28 00:52:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:01,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:52:01,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:52:01,658 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) [2021-12-28 00:52:01,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 00:52:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:01,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:52:01,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:52:02,130 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-28 00:52:02,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:52:02,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458189999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:02,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:52:02,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:52:02,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765167033] [2021-12-28 00:52:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:02,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:52:02,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:02,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:52:02,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:52:02,135 INFO L87 Difference]: Start difference. First operand 361 states and 531 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:02,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:02,189 INFO L93 Difference]: Finished difference Result 752 states and 1121 transitions. [2021-12-28 00:52:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:52:02,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2021-12-28 00:52:02,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:02,193 INFO L225 Difference]: With dead ends: 752 [2021-12-28 00:52:02,193 INFO L226 Difference]: Without dead ends: 418 [2021-12-28 00:52:02,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:52:02,196 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 107 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1037 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 [2021-12-28 00:52:02,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1037 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:52:02,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-12-28 00:52:02,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 410. [2021-12-28 00:52:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 317 states have (on average 1.5078864353312302) internal successors, (478), 320 states have internal predecessors, (478), 69 states have call successors, (69), 23 states have call predecessors, (69), 23 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-12-28 00:52:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 615 transitions. [2021-12-28 00:52:02,222 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 615 transitions. Word has length 127 [2021-12-28 00:52:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:02,223 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 615 transitions. [2021-12-28 00:52:02,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:02,224 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 615 transitions. [2021-12-28 00:52:02,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-28 00:52:02,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:02,227 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-28 00:52:02,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 00:52:02,451 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 [2021-12-28 00:52:02,452 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:02,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:02,452 INFO L85 PathProgramCache]: Analyzing trace with hash -179272271, now seen corresponding path program 1 times [2021-12-28 00:52:02,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:02,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692115626] [2021-12-28 00:52:02,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:02,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:52:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:52:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:52:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-28 00:52:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 00:52:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:52:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:52:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:52:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:52:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:52:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:52:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:52:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:52:02,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:02,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692115626] [2021-12-28 00:52:02,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692115626] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:52:02,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531031348] [2021-12-28 00:52:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:02,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:52:02,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:52:02,672 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) [2021-12-28 00:52:02,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 00:52:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:02,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 00:52:02,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:52:03,199 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-28 00:52:03,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:52:03,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531031348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:03,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:52:03,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-28 00:52:03,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157196489] [2021-12-28 00:52:03,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:03,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:52:03,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:03,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:52:03,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:52:03,202 INFO L87 Difference]: Start difference. First operand 410 states and 615 transitions. Second operand has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 00:52:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:03,266 INFO L93 Difference]: Finished difference Result 811 states and 1220 transitions. [2021-12-28 00:52:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:52:03,266 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 128 [2021-12-28 00:52:03,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:03,269 INFO L225 Difference]: With dead ends: 811 [2021-12-28 00:52:03,270 INFO L226 Difference]: Without dead ends: 412 [2021-12-28 00:52:03,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:52:03,272 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 125 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1936 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 [2021-12-28 00:52:03,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1936 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:52:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-12-28 00:52:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-12-28 00:52:03,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 318 states have (on average 1.5062893081761006) internal successors, (479), 322 states have internal predecessors, (479), 69 states have call successors, (69), 23 states have call predecessors, (69), 24 states have return successors, (70), 68 states have call predecessors, (70), 68 states have call successors, (70) [2021-12-28 00:52:03,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 618 transitions. [2021-12-28 00:52:03,293 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 618 transitions. Word has length 128 [2021-12-28 00:52:03,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:03,293 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 618 transitions. [2021-12-28 00:52:03,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.25) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 00:52:03,294 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 618 transitions. [2021-12-28 00:52:03,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-28 00:52:03,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:03,296 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-12-28 00:52:03,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 00:52:03,522 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 [2021-12-28 00:52:03,522 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:03,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:03,523 INFO L85 PathProgramCache]: Analyzing trace with hash -580569720, now seen corresponding path program 1 times [2021-12-28 00:52:03,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:03,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854099018] [2021-12-28 00:52:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:03,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:03,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 00:52:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 00:52:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 00:52:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:52:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:52:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:52:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:52:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:52:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:52:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:52:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:52:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 00:52:03,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:03,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854099018] [2021-12-28 00:52:03,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854099018] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:52:03,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902815044] [2021-12-28 00:52:03,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:03,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:52:03,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:52:03,735 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) [2021-12-28 00:52:03,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 00:52:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:03,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 00:52:03,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:52:04,223 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-28 00:52:04,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:52:04,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902815044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:04,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:52:04,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-28 00:52:04,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333636973] [2021-12-28 00:52:04,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:04,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:52:04,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:04,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:52:04,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:52:04,227 INFO L87 Difference]: Start difference. First operand 412 states and 618 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 00:52:04,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:04,295 INFO L93 Difference]: Finished difference Result 813 states and 1225 transitions. [2021-12-28 00:52:04,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:52:04,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2021-12-28 00:52:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:04,298 INFO L225 Difference]: With dead ends: 813 [2021-12-28 00:52:04,299 INFO L226 Difference]: Without dead ends: 414 [2021-12-28 00:52:04,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-28 00:52:04,301 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 124 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1925 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 [2021-12-28 00:52:04,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1925 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:52:04,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-12-28 00:52:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2021-12-28 00:52:04,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 319 states have (on average 1.5047021943573669) internal successors, (480), 324 states have internal predecessors, (480), 69 states have call successors, (69), 23 states have call predecessors, (69), 25 states have return successors, (75), 68 states have call predecessors, (75), 68 states have call successors, (75) [2021-12-28 00:52:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 624 transitions. [2021-12-28 00:52:04,330 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 624 transitions. Word has length 129 [2021-12-28 00:52:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:04,330 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 624 transitions. [2021-12-28 00:52:04,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 00:52:04,331 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 624 transitions. [2021-12-28 00:52:04,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 00:52:04,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:04,334 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:04,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 00:52:04,559 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 [2021-12-28 00:52:04,560 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:04,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2124784056, now seen corresponding path program 1 times [2021-12-28 00:52:04,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:04,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843876832] [2021-12-28 00:52:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:04,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 00:52:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 00:52:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:52:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:52:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:52:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:52:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:52:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:52:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:52:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:52:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:52:04,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:04,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843876832] [2021-12-28 00:52:04,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843876832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:04,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:04,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:52:04,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035276618] [2021-12-28 00:52:04,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:04,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:52:04,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:04,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:52:04,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:52:04,721 INFO L87 Difference]: Start difference. First operand 414 states and 624 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 00:52:06,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:06,566 INFO L93 Difference]: Finished difference Result 987 states and 1486 transitions. [2021-12-28 00:52:06,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:52:06,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 130 [2021-12-28 00:52:06,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:06,576 INFO L225 Difference]: With dead ends: 987 [2021-12-28 00:52:06,576 INFO L226 Difference]: Without dead ends: 596 [2021-12-28 00:52:06,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:52:06,580 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1458 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 2604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:06,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 1392 Invalid, 2604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 00:52:06,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-12-28 00:52:06,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 414. [2021-12-28 00:52:06,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 319 states have (on average 1.5047021943573669) internal successors, (480), 324 states have internal predecessors, (480), 69 states have call successors, (69), 23 states have call predecessors, (69), 25 states have return successors, (74), 68 states have call predecessors, (74), 68 states have call successors, (74) [2021-12-28 00:52:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 623 transitions. [2021-12-28 00:52:06,626 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 623 transitions. Word has length 130 [2021-12-28 00:52:06,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:06,626 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 623 transitions. [2021-12-28 00:52:06,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 00:52:06,626 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 623 transitions. [2021-12-28 00:52:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-28 00:52:06,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:06,629 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 00:52:06,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 00:52:06,629 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:06,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:06,630 INFO L85 PathProgramCache]: Analyzing trace with hash 657226353, now seen corresponding path program 2 times [2021-12-28 00:52:06,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:06,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634406610] [2021-12-28 00:52:06,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:06,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:06,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 00:52:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 00:52:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:52:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:52:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:52:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:52:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:52:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:52:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:52:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 00:52:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-28 00:52:06,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:06,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634406610] [2021-12-28 00:52:06,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634406610] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:06,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:06,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:52:06,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013336519] [2021-12-28 00:52:06,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:06,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:52:06,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:06,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:52:06,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:52:06,784 INFO L87 Difference]: Start difference. First operand 414 states and 623 transitions. Second operand has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 00:52:08,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:08,596 INFO L93 Difference]: Finished difference Result 989 states and 1489 transitions. [2021-12-28 00:52:08,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:52:08,597 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2021-12-28 00:52:08,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:08,600 INFO L225 Difference]: With dead ends: 989 [2021-12-28 00:52:08,600 INFO L226 Difference]: Without dead ends: 598 [2021-12-28 00:52:08,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:52:08,604 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 1310 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:08,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1327 Valid, 1450 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [523 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-28 00:52:08,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-28 00:52:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 416. [2021-12-28 00:52:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 320 states have (on average 1.503125) internal successors, (481), 326 states have internal predecessors, (481), 69 states have call successors, (69), 23 states have call predecessors, (69), 26 states have return successors, (76), 68 states have call predecessors, (76), 68 states have call successors, (76) [2021-12-28 00:52:08,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 626 transitions. [2021-12-28 00:52:08,637 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 626 transitions. Word has length 131 [2021-12-28 00:52:08,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:08,637 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 626 transitions. [2021-12-28 00:52:08,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 00:52:08,638 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 626 transitions. [2021-12-28 00:52:08,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-28 00:52:08,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:08,641 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:08,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 00:52:08,641 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:08,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:08,641 INFO L85 PathProgramCache]: Analyzing trace with hash -234250189, now seen corresponding path program 1 times [2021-12-28 00:52:08,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:08,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346901279] [2021-12-28 00:52:08,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:08,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:08,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:08,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:52:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:52:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:52:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:52:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:52:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:52:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:52:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:52:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:52:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 00:52:08,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:08,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346901279] [2021-12-28 00:52:08,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346901279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:08,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:08,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:52:08,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79627372] [2021-12-28 00:52:08,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:08,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:52:08,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:08,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:52:08,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:52:08,809 INFO L87 Difference]: Start difference. First operand 416 states and 626 transitions. Second operand has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-28 00:52:11,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:11,075 INFO L93 Difference]: Finished difference Result 987 states and 1484 transitions. [2021-12-28 00:52:11,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:52:11,075 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 132 [2021-12-28 00:52:11,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:11,080 INFO L225 Difference]: With dead ends: 987 [2021-12-28 00:52:11,080 INFO L226 Difference]: Without dead ends: 598 [2021-12-28 00:52:11,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 00:52:11,082 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1563 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 3748 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 4349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 3748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:11,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1563 Valid, 1706 Invalid, 4349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 3748 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-28 00:52:11,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-12-28 00:52:11,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 416. [2021-12-28 00:52:11,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 320 states have (on average 1.503125) internal successors, (481), 326 states have internal predecessors, (481), 69 states have call successors, (69), 23 states have call predecessors, (69), 26 states have return successors, (75), 68 states have call predecessors, (75), 68 states have call successors, (75) [2021-12-28 00:52:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 625 transitions. [2021-12-28 00:52:11,111 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 625 transitions. Word has length 132 [2021-12-28 00:52:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:11,111 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 625 transitions. [2021-12-28 00:52:11,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.636363636363637) internal successors, (84), 8 states have internal predecessors, (84), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-28 00:52:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 625 transitions. [2021-12-28 00:52:11,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-28 00:52:11,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:11,113 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 00:52:11,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 00:52:11,114 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:11,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:11,114 INFO L85 PathProgramCache]: Analyzing trace with hash -273473343, now seen corresponding path program 2 times [2021-12-28 00:52:11,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:11,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357582488] [2021-12-28 00:52:11,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:11,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:11,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 00:52:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 00:52:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:52:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:52:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:52:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:52:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:52:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:52:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:52:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:11,311 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-28 00:52:11,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:11,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357582488] [2021-12-28 00:52:11,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357582488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:11,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:11,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:52:11,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991744723] [2021-12-28 00:52:11,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:11,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:52:11,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:11,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:52:11,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:52:11,313 INFO L87 Difference]: Start difference. First operand 416 states and 625 transitions. Second operand has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-28 00:52:13,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:13,592 INFO L93 Difference]: Finished difference Result 989 states and 1490 transitions. [2021-12-28 00:52:13,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:52:13,593 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 133 [2021-12-28 00:52:13,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:13,597 INFO L225 Difference]: With dead ends: 989 [2021-12-28 00:52:13,597 INFO L226 Difference]: Without dead ends: 600 [2021-12-28 00:52:13,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-28 00:52:13,601 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 1486 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 3923 mSolverCounterSat, 595 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 4518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 595 IncrementalHoareTripleChecker+Valid, 3923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:13,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1486 Valid, 1730 Invalid, 4518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [595 Valid, 3923 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-28 00:52:13,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-28 00:52:13,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 418. [2021-12-28 00:52:13,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 321 states have (on average 1.5015576323987538) internal successors, (482), 328 states have internal predecessors, (482), 69 states have call successors, (69), 23 states have call predecessors, (69), 27 states have return successors, (80), 68 states have call predecessors, (80), 68 states have call successors, (80) [2021-12-28 00:52:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 631 transitions. [2021-12-28 00:52:13,634 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 631 transitions. Word has length 133 [2021-12-28 00:52:13,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:13,635 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 631 transitions. [2021-12-28 00:52:13,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 8 states have internal predecessors, (85), 4 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-28 00:52:13,635 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 631 transitions. [2021-12-28 00:52:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-28 00:52:13,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:13,638 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:13,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 00:52:13,638 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:13,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:13,639 INFO L85 PathProgramCache]: Analyzing trace with hash 785362892, now seen corresponding path program 1 times [2021-12-28 00:52:13,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:13,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820448806] [2021-12-28 00:52:13,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:13,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:13,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:52:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 00:52:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:52:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:52:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:52:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:52:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:52:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:52:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:52:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-28 00:52:13,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:13,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820448806] [2021-12-28 00:52:13,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820448806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:13,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:13,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:52:13,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189534782] [2021-12-28 00:52:13,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:13,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:52:13,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:13,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:52:13,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:52:13,769 INFO L87 Difference]: Start difference. First operand 418 states and 631 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 00:52:15,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:15,235 INFO L93 Difference]: Finished difference Result 991 states and 1493 transitions. [2021-12-28 00:52:15,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 00:52:15,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 134 [2021-12-28 00:52:15,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:15,240 INFO L225 Difference]: With dead ends: 991 [2021-12-28 00:52:15,240 INFO L226 Difference]: Without dead ends: 600 [2021-12-28 00:52:15,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-28 00:52:15,243 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 1399 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 2719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:15,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1416 Valid, 1429 Invalid, 2719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 00:52:15,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-28 00:52:15,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 418. [2021-12-28 00:52:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 321 states have (on average 1.5015576323987538) internal successors, (482), 328 states have internal predecessors, (482), 69 states have call successors, (69), 23 states have call predecessors, (69), 27 states have return successors, (80), 68 states have call predecessors, (80), 68 states have call successors, (80) [2021-12-28 00:52:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 631 transitions. [2021-12-28 00:52:15,284 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 631 transitions. Word has length 134 [2021-12-28 00:52:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:15,285 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 631 transitions. [2021-12-28 00:52:15,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-28 00:52:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 631 transitions. [2021-12-28 00:52:15,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-28 00:52:15,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:15,287 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:15,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 00:52:15,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:15,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:15,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1091700338, now seen corresponding path program 1 times [2021-12-28 00:52:15,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:15,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264642811] [2021-12-28 00:52:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:15,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:52:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 00:52:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:52:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:52:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:52:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:52:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:52:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:52:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:52:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,405 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:15,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:15,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264642811] [2021-12-28 00:52:15,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264642811] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:52:15,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435903806] [2021-12-28 00:52:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:15,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:52:15,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:52:15,408 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) [2021-12-28 00:52:15,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 00:52:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:15,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:52:15,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:52:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:15,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 00:52:16,089 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:16,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435903806] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 00:52:16,089 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 00:52:16,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-28 00:52:16,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236785282] [2021-12-28 00:52:16,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 00:52:16,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 00:52:16,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:16,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 00:52:16,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-28 00:52:16,092 INFO L87 Difference]: Start difference. First operand 418 states and 631 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (37), 6 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 00:52:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:17,974 INFO L93 Difference]: Finished difference Result 1158 states and 1817 transitions. [2021-12-28 00:52:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 00:52:17,975 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (37), 6 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 134 [2021-12-28 00:52:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:17,981 INFO L225 Difference]: With dead ends: 1158 [2021-12-28 00:52:17,981 INFO L226 Difference]: Without dead ends: 952 [2021-12-28 00:52:17,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:52:17,984 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 1638 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 684 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 684 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:17,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1683 Valid, 2030 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [684 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-28 00:52:17,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2021-12-28 00:52:18,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 746. [2021-12-28 00:52:18,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 585 states have (on average 1.5726495726495726) internal successors, (920), 592 states have internal predecessors, (920), 133 states have call successors, (133), 23 states have call predecessors, (133), 27 states have return successors, (154), 132 states have call predecessors, (154), 132 states have call successors, (154) [2021-12-28 00:52:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1207 transitions. [2021-12-28 00:52:18,042 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1207 transitions. Word has length 134 [2021-12-28 00:52:18,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:18,042 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 1207 transitions. [2021-12-28 00:52:18,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (37), 6 states have call predecessors, (37), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-28 00:52:18,043 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1207 transitions. [2021-12-28 00:52:18,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-28 00:52:18,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:18,047 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:18,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 00:52:18,272 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 [2021-12-28 00:52:18,273 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:18,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:18,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1782811473, now seen corresponding path program 1 times [2021-12-28 00:52:18,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:18,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636647648] [2021-12-28 00:52:18,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:18,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:52:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:52:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:52:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:52:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:52:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:52:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:52:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:52:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 00:52:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:18,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:18,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636647648] [2021-12-28 00:52:18,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636647648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:18,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:18,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:52:18,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759379760] [2021-12-28 00:52:18,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:18,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:52:18,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:18,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:52:18,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:52:18,407 INFO L87 Difference]: Start difference. First operand 746 states and 1207 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:19,663 INFO L93 Difference]: Finished difference Result 1939 states and 3188 transitions. [2021-12-28 00:52:19,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:52:19,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 140 [2021-12-28 00:52:19,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:19,670 INFO L225 Difference]: With dead ends: 1939 [2021-12-28 00:52:19,670 INFO L226 Difference]: Without dead ends: 1261 [2021-12-28 00:52:19,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:52:19,674 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 1391 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:19,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1406 Valid, 1321 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [586 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:52:19,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2021-12-28 00:52:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1071. [2021-12-28 00:52:19,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 846 states have (on average 1.5898345153664302) internal successors, (1345), 853 states have internal predecessors, (1345), 197 states have call successors, (197), 23 states have call predecessors, (197), 27 states have return successors, (228), 196 states have call predecessors, (228), 196 states have call successors, (228) [2021-12-28 00:52:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1770 transitions. [2021-12-28 00:52:19,749 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1770 transitions. Word has length 140 [2021-12-28 00:52:19,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:19,749 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 1770 transitions. [2021-12-28 00:52:19,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1770 transitions. [2021-12-28 00:52:19,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-28 00:52:19,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:19,755 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:19,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 00:52:19,756 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:19,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:19,756 INFO L85 PathProgramCache]: Analyzing trace with hash 2052921179, now seen corresponding path program 1 times [2021-12-28 00:52:19,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:19,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211261668] [2021-12-28 00:52:19,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:19,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:52:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:52:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:52:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:52:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:52:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:52:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:52:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:52:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 00:52:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:19,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:19,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211261668] [2021-12-28 00:52:19,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211261668] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:19,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:19,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:52:19,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003663407] [2021-12-28 00:52:19,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:19,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:52:19,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:52:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:52:19,881 INFO L87 Difference]: Start difference. First operand 1071 states and 1770 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:21,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:21,121 INFO L93 Difference]: Finished difference Result 2719 states and 4537 transitions. [2021-12-28 00:52:21,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:52:21,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 141 [2021-12-28 00:52:21,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:21,130 INFO L225 Difference]: With dead ends: 2719 [2021-12-28 00:52:21,131 INFO L226 Difference]: Without dead ends: 1769 [2021-12-28 00:52:21,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:52:21,135 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 1383 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:21,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1398 Valid, 1282 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:52:21,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2021-12-28 00:52:21,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1579. [2021-12-28 00:52:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1259 states have (on average 1.6012708498808579) internal successors, (2016), 1266 states have internal predecessors, (2016), 292 states have call successors, (292), 23 states have call predecessors, (292), 27 states have return successors, (323), 291 states have call predecessors, (323), 291 states have call successors, (323) [2021-12-28 00:52:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 2631 transitions. [2021-12-28 00:52:21,231 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 2631 transitions. Word has length 141 [2021-12-28 00:52:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:21,231 INFO L470 AbstractCegarLoop]: Abstraction has 1579 states and 2631 transitions. [2021-12-28 00:52:21,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 2631 transitions. [2021-12-28 00:52:21,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-28 00:52:21,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:21,240 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:21,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 00:52:21,241 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:21,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:21,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1588518801, now seen corresponding path program 1 times [2021-12-28 00:52:21,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:21,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693183380] [2021-12-28 00:52:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:21,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:21,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:52:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:52:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:52:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:52:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:52:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:52:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:52:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:52:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-28 00:52:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:21,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:21,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693183380] [2021-12-28 00:52:21,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693183380] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:21,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:21,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:52:21,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415505373] [2021-12-28 00:52:21,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:21,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:52:21,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:52:21,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:52:21,371 INFO L87 Difference]: Start difference. First operand 1579 states and 2631 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:22,604 INFO L93 Difference]: Finished difference Result 3871 states and 6546 transitions. [2021-12-28 00:52:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:52:22,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2021-12-28 00:52:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:22,617 INFO L225 Difference]: With dead ends: 3871 [2021-12-28 00:52:22,617 INFO L226 Difference]: Without dead ends: 2538 [2021-12-28 00:52:22,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:52:22,623 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1351 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1366 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:22,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1366 Valid, 1279 Invalid, 1690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:52:22,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2021-12-28 00:52:22,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2348. [2021-12-28 00:52:22,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 1905 states have (on average 1.6099737532808398) internal successors, (3067), 1912 states have internal predecessors, (3067), 415 states have call successors, (415), 23 states have call predecessors, (415), 27 states have return successors, (462), 414 states have call predecessors, (462), 414 states have call successors, (462) [2021-12-28 00:52:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 3944 transitions. [2021-12-28 00:52:22,760 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 3944 transitions. Word has length 142 [2021-12-28 00:52:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:22,760 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 3944 transitions. [2021-12-28 00:52:22,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 3944 transitions. [2021-12-28 00:52:22,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-28 00:52:22,773 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:22,773 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:22,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 00:52:22,774 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2042299878, now seen corresponding path program 1 times [2021-12-28 00:52:22,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:22,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272343325] [2021-12-28 00:52:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:22,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:22,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:52:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:52:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:52:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:52:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:52:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:52:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:52:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:52:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-28 00:52:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:22,895 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:22,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:22,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272343325] [2021-12-28 00:52:22,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272343325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:22,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:22,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:52:22,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296345491] [2021-12-28 00:52:22,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:22,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:52:22,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:22,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:52:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:52:22,898 INFO L87 Difference]: Start difference. First operand 2348 states and 3944 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:24,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:24,193 INFO L93 Difference]: Finished difference Result 5665 states and 9680 transitions. [2021-12-28 00:52:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:52:24,193 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2021-12-28 00:52:24,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:24,212 INFO L225 Difference]: With dead ends: 5665 [2021-12-28 00:52:24,213 INFO L226 Difference]: Without dead ends: 3767 [2021-12-28 00:52:24,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:52:24,219 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1359 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 576 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:24,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 1300 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [576 Valid, 1099 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:52:24,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2021-12-28 00:52:24,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3577. [2021-12-28 00:52:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 2955 states have (on average 1.6155668358714044) internal successors, (4774), 2962 states have internal predecessors, (4774), 594 states have call successors, (594), 23 states have call predecessors, (594), 27 states have return successors, (667), 593 states have call predecessors, (667), 593 states have call successors, (667) [2021-12-28 00:52:24,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 6035 transitions. [2021-12-28 00:52:24,448 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 6035 transitions. Word has length 143 [2021-12-28 00:52:24,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:24,449 INFO L470 AbstractCegarLoop]: Abstraction has 3577 states and 6035 transitions. [2021-12-28 00:52:24,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:24,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 6035 transitions. [2021-12-28 00:52:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-28 00:52:24,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:24,466 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:24,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 00:52:24,467 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:24,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:24,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1346525747, now seen corresponding path program 1 times [2021-12-28 00:52:24,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:24,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572157104] [2021-12-28 00:52:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:24,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:52:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:52:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:52:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:52:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:52:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:52:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:52:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:52:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-28 00:52:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:24,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:24,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572157104] [2021-12-28 00:52:24,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572157104] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:24,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:24,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:52:24,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860016932] [2021-12-28 00:52:24,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:24,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:52:24,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:24,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:52:24,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:52:24,586 INFO L87 Difference]: Start difference. First operand 3577 states and 6035 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:25,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:25,963 INFO L93 Difference]: Finished difference Result 8613 states and 14827 transitions. [2021-12-28 00:52:25,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:52:25,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2021-12-28 00:52:25,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:25,993 INFO L225 Difference]: With dead ends: 8613 [2021-12-28 00:52:25,993 INFO L226 Difference]: Without dead ends: 5798 [2021-12-28 00:52:26,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:52:26,004 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 1444 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:26,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1459 Valid, 1266 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:52:26,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5798 states. [2021-12-28 00:52:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5798 to 5608. [2021-12-28 00:52:26,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5608 states, 4610 states have (on average 1.6108459869848155) internal successors, (7426), 4617 states have internal predecessors, (7426), 970 states have call successors, (970), 23 states have call predecessors, (970), 27 states have return successors, (1087), 969 states have call predecessors, (1087), 969 states have call successors, (1087) [2021-12-28 00:52:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5608 states to 5608 states and 9483 transitions. [2021-12-28 00:52:26,347 INFO L78 Accepts]: Start accepts. Automaton has 5608 states and 9483 transitions. Word has length 144 [2021-12-28 00:52:26,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:26,348 INFO L470 AbstractCegarLoop]: Abstraction has 5608 states and 9483 transitions. [2021-12-28 00:52:26,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:26,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5608 states and 9483 transitions. [2021-12-28 00:52:26,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-28 00:52:26,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:26,400 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:26,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 00:52:26,401 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:26,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:26,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1103700906, now seen corresponding path program 1 times [2021-12-28 00:52:26,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:26,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457736834] [2021-12-28 00:52:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:26,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:52:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:52:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:52:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:52:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:52:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:52:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 00:52:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-28 00:52:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-28 00:52:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:26,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:26,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457736834] [2021-12-28 00:52:26,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457736834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:26,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:26,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:52:26,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749788371] [2021-12-28 00:52:26,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:26,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:52:26,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:26,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:52:26,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:52:26,510 INFO L87 Difference]: Start difference. First operand 5608 states and 9483 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:28,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:28,019 INFO L93 Difference]: Finished difference Result 13950 states and 24048 transitions. [2021-12-28 00:52:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:52:28,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2021-12-28 00:52:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:28,064 INFO L225 Difference]: With dead ends: 13950 [2021-12-28 00:52:28,064 INFO L226 Difference]: Without dead ends: 9481 [2021-12-28 00:52:28,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:52:28,081 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 1363 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:28,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1378 Valid, 1280 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:52:28,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9481 states. [2021-12-28 00:52:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9481 to 9291. [2021-12-28 00:52:28,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9291 states, 7687 states have (on average 1.6094705346689215) internal successors, (12372), 7694 states have internal predecessors, (12372), 1576 states have call successors, (1576), 23 states have call predecessors, (1576), 27 states have return successors, (1771), 1575 states have call predecessors, (1771), 1575 states have call successors, (1771) [2021-12-28 00:52:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9291 states to 9291 states and 15719 transitions. [2021-12-28 00:52:28,681 INFO L78 Accepts]: Start accepts. Automaton has 9291 states and 15719 transitions. Word has length 145 [2021-12-28 00:52:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:28,681 INFO L470 AbstractCegarLoop]: Abstraction has 9291 states and 15719 transitions. [2021-12-28 00:52:28,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:28,682 INFO L276 IsEmpty]: Start isEmpty. Operand 9291 states and 15719 transitions. [2021-12-28 00:52:28,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-28 00:52:28,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:28,717 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:28,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 00:52:28,717 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:28,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:28,719 INFO L85 PathProgramCache]: Analyzing trace with hash 97277061, now seen corresponding path program 1 times [2021-12-28 00:52:28,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:28,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944174685] [2021-12-28 00:52:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:28,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:52:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:52:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:52:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:52:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:52:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:52:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:52:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-28 00:52:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 00:52:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:28,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:28,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944174685] [2021-12-28 00:52:28,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944174685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:28,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:28,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:52:28,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720017075] [2021-12-28 00:52:28,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:28,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:52:28,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:28,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:52:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:52:28,837 INFO L87 Difference]: Start difference. First operand 9291 states and 15719 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:30,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:30,453 INFO L93 Difference]: Finished difference Result 24134 states and 41594 transitions. [2021-12-28 00:52:30,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:52:30,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2021-12-28 00:52:30,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:30,528 INFO L225 Difference]: With dead ends: 24134 [2021-12-28 00:52:30,528 INFO L226 Difference]: Without dead ends: 16434 [2021-12-28 00:52:30,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:52:30,562 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 1373 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 588 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 588 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:30,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1388 Valid, 1298 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [588 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 00:52:30,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16434 states. [2021-12-28 00:52:31,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16434 to 16244. [2021-12-28 00:52:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16244 states, 13437 states have (on average 1.6011014363325147) internal successors, (21514), 13444 states have internal predecessors, (21514), 2779 states have call successors, (2779), 23 states have call predecessors, (2779), 27 states have return successors, (3118), 2778 states have call predecessors, (3118), 2778 states have call successors, (3118) [2021-12-28 00:52:31,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16244 states to 16244 states and 27411 transitions. [2021-12-28 00:52:31,535 INFO L78 Accepts]: Start accepts. Automaton has 16244 states and 27411 transitions. Word has length 146 [2021-12-28 00:52:31,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:31,536 INFO L470 AbstractCegarLoop]: Abstraction has 16244 states and 27411 transitions. [2021-12-28 00:52:31,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 16244 states and 27411 transitions. [2021-12-28 00:52:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-28 00:52:31,573 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:31,573 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:31,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 00:52:31,573 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:31,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:31,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1006410229, now seen corresponding path program 1 times [2021-12-28 00:52:31,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:31,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232638119] [2021-12-28 00:52:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:31,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:52:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:52:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:52:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:52:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:52:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:52:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:52:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-28 00:52:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-28 00:52:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:31,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:31,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232638119] [2021-12-28 00:52:31,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232638119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:31,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:31,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:52:31,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392831812] [2021-12-28 00:52:31,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:31,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:52:31,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:31,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:52:31,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:52:31,672 INFO L87 Difference]: Start difference. First operand 16244 states and 27411 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:33,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:33,875 INFO L93 Difference]: Finished difference Result 43100 states and 74193 transitions. [2021-12-28 00:52:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:52:33,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2021-12-28 00:52:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:33,998 INFO L225 Difference]: With dead ends: 43100 [2021-12-28 00:52:33,998 INFO L226 Difference]: Without dead ends: 29089 [2021-12-28 00:52:34,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:52:34,037 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1401 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1107 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1416 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 1107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:34,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1416 Valid, 1252 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 1107 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:52:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29089 states. [2021-12-28 00:52:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29089 to 28899. [2021-12-28 00:52:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28899 states, 24053 states have (on average 1.5972227996507713) internal successors, (38418), 24060 states have internal predecessors, (38418), 4818 states have call successors, (4818), 23 states have call predecessors, (4818), 27 states have return successors, (5431), 4817 states have call predecessors, (5431), 4817 states have call successors, (5431) [2021-12-28 00:52:35,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28899 states to 28899 states and 48667 transitions. [2021-12-28 00:52:35,492 INFO L78 Accepts]: Start accepts. Automaton has 28899 states and 48667 transitions. Word has length 147 [2021-12-28 00:52:35,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:35,492 INFO L470 AbstractCegarLoop]: Abstraction has 28899 states and 48667 transitions. [2021-12-28 00:52:35,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:35,493 INFO L276 IsEmpty]: Start isEmpty. Operand 28899 states and 48667 transitions. [2021-12-28 00:52:35,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-28 00:52:35,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:35,544 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:35,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 00:52:35,545 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:35,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:35,545 INFO L85 PathProgramCache]: Analyzing trace with hash -875768605, now seen corresponding path program 1 times [2021-12-28 00:52:35,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:35,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796428414] [2021-12-28 00:52:35,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:35,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:35,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:52:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:52:35,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:52:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:52:35,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:52:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:52:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:52:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-28 00:52:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-28 00:52:35,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:35,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:35,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796428414] [2021-12-28 00:52:35,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796428414] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:35,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:35,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:52:35,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16554564] [2021-12-28 00:52:35,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:35,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:52:35,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:35,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:52:35,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:52:35,662 INFO L87 Difference]: Start difference. First operand 28899 states and 48667 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:38,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:38,627 INFO L93 Difference]: Finished difference Result 78862 states and 134952 transitions. [2021-12-28 00:52:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:52:38,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2021-12-28 00:52:38,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:39,018 INFO L225 Difference]: With dead ends: 78862 [2021-12-28 00:52:39,019 INFO L226 Difference]: Without dead ends: 52968 [2021-12-28 00:52:39,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:52:39,083 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 1427 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1442 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:39,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1442 Valid, 1282 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 00:52:39,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52968 states. [2021-12-28 00:52:41,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52968 to 52778. [2021-12-28 00:52:41,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52778 states, 44217 states have (on average 1.5918538118823078) internal successors, (70387), 44224 states have internal predecessors, (70387), 8533 states have call successors, (8533), 23 states have call predecessors, (8533), 27 states have return successors, (9678), 8532 states have call predecessors, (9678), 8532 states have call successors, (9678) [2021-12-28 00:52:41,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52778 states to 52778 states and 88598 transitions. [2021-12-28 00:52:41,755 INFO L78 Accepts]: Start accepts. Automaton has 52778 states and 88598 transitions. Word has length 148 [2021-12-28 00:52:41,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:52:41,756 INFO L470 AbstractCegarLoop]: Abstraction has 52778 states and 88598 transitions. [2021-12-28 00:52:41,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:41,756 INFO L276 IsEmpty]: Start isEmpty. Operand 52778 states and 88598 transitions. [2021-12-28 00:52:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-28 00:52:41,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:52:41,814 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-28 00:52:41,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 00:52:41,815 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:52:41,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:52:41,815 INFO L85 PathProgramCache]: Analyzing trace with hash -929026731, now seen corresponding path program 1 times [2021-12-28 00:52:41,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:52:41,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586793019] [2021-12-28 00:52:41,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:52:41,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:52:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:52:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:52:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:52:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:52:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:52:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:52:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:52:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:52:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:52:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:52:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:52:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:52:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:52:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-28 00:52:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-28 00:52:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 00:52:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:52:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-28 00:52:41,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:52:41,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586793019] [2021-12-28 00:52:41,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586793019] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:52:41,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:52:41,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:52:41,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111446492] [2021-12-28 00:52:41,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:52:41,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:52:41,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:52:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:52:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:52:41,911 INFO L87 Difference]: Start difference. First operand 52778 states and 88598 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 00:52:46,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:52:46,350 INFO L93 Difference]: Finished difference Result 98633 states and 169139 transitions. [2021-12-28 00:52:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:52:46,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 149 [2021-12-28 00:52:46,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:52:46,712 INFO L225 Difference]: With dead ends: 98633 [2021-12-28 00:52:46,712 INFO L226 Difference]: Without dead ends: 98427 [2021-12-28 00:52:46,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-28 00:52:46,755 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1348 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 582 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 582 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-28 00:52:46,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1363 Valid, 1301 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [582 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-28 00:52:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98427 states.