./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec8_product33.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_spec8_product33.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 110ae467dd0e6a723852f1756a5d5c5e6a5ea34b8ae8b082c6ae77d9e8e89434 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 00:53:17,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 00:53:17,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 00:53:17,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 00:53:17,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 00:53:17,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 00:53:17,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 00:53:17,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 00:53:17,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 00:53:17,941 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 00:53:17,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 00:53:17,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 00:53:17,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 00:53:17,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 00:53:17,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 00:53:17,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 00:53:17,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 00:53:17,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 00:53:17,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 00:53:17,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 00:53:17,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 00:53:17,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 00:53:17,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 00:53:17,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 00:53:17,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 00:53:17,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 00:53:17,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 00:53:17,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 00:53:17,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 00:53:17,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 00:53:17,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 00:53:17,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 00:53:17,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 00:53:17,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 00:53:17,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 00:53:17,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 00:53:17,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 00:53:17,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 00:53:17,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 00:53:17,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 00:53:17,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 00:53:17,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 00:53:18,032 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 00:53:18,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 00:53:18,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 00:53:18,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 00:53:18,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 00:53:18,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 00:53:18,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 00:53:18,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 00:53:18,037 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 00:53:18,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 00:53:18,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 00:53:18,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 00:53:18,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 00:53:18,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 00:53:18,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 00:53:18,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 00:53:18,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 00:53:18,039 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 00:53:18,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 00:53:18,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 00:53:18,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 00:53:18,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 00:53:18,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 00:53:18,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 00:53:18,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:53:18,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 00:53:18,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 00:53:18,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 00:53:18,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 00:53:18,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 00:53:18,042 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 00:53:18,042 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 00:53:18,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 00:53:18,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 110ae467dd0e6a723852f1756a5d5c5e6a5ea34b8ae8b082c6ae77d9e8e89434 [2021-12-28 00:53:18,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 00:53:18,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 00:53:18,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 00:53:18,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 00:53:18,386 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 00:53:18,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec8_product33.cil.c [2021-12-28 00:53:18,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d1e28c2/3cbfbf94082c44aaa08d6fcf1bea885a/FLAG7a690514b [2021-12-28 00:53:18,977 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 00:53:18,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c [2021-12-28 00:53:19,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d1e28c2/3cbfbf94082c44aaa08d6fcf1bea885a/FLAG7a690514b [2021-12-28 00:53:19,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d1e28c2/3cbfbf94082c44aaa08d6fcf1bea885a [2021-12-28 00:53:19,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 00:53:19,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 00:53:19,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 00:53:19,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 00:53:19,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 00:53:19,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:53:19" (1/1) ... [2021-12-28 00:53:19,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d4f2736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:19, skipping insertion in model container [2021-12-28 00:53:19,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 12:53:19" (1/1) ... [2021-12-28 00:53:19,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 00:53:19,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 00:53:19,651 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_spec8_product33.cil.c[11621,11634] [2021-12-28 00:53:19,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:53:19,915 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 00:53:19,948 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_spec8_product33.cil.c[11621,11634] [2021-12-28 00:53:20,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 00:53:20,061 INFO L208 MainTranslator]: Completed translation [2021-12-28 00:53:20,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20 WrapperNode [2021-12-28 00:53:20,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 00:53:20,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 00:53:20,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 00:53:20,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 00:53:20,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20" (1/1) ... [2021-12-28 00:53:20,100 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20" (1/1) ... [2021-12-28 00:53:20,163 INFO L137 Inliner]: procedures = 135, calls = 233, calls flagged for inlining = 66, calls inlined = 61, statements flattened = 1084 [2021-12-28 00:53:20,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 00:53:20,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 00:53:20,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 00:53:20,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 00:53:20,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20" (1/1) ... [2021-12-28 00:53:20,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20" (1/1) ... [2021-12-28 00:53:20,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20" (1/1) ... [2021-12-28 00:53:20,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20" (1/1) ... [2021-12-28 00:53:20,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20" (1/1) ... [2021-12-28 00:53:20,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20" (1/1) ... [2021-12-28 00:53:20,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20" (1/1) ... [2021-12-28 00:53:20,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 00:53:20,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 00:53:20,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 00:53:20,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 00:53:20,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20" (1/1) ... [2021-12-28 00:53:20,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 00:53:20,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:53:20,281 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 00:53:20,300 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 00:53:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-28 00:53:20,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-28 00:53:20,316 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-28 00:53:20,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-28 00:53:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-28 00:53:20,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-28 00:53:20,317 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-28 00:53:20,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-28 00:53:20,319 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-28 00:53:20,320 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-28 00:53:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-28 00:53:20,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-28 00:53:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-28 00:53:20,320 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-28 00:53:20,320 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-28 00:53:20,321 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-28 00:53:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-28 00:53:20,321 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-28 00:53:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-28 00:53:20,321 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-28 00:53:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-28 00:53:20,321 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-28 00:53:20,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-28 00:53:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-28 00:53:20,322 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-28 00:53:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-28 00:53:20,322 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-28 00:53:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 00:53:20,322 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-28 00:53:20,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-28 00:53:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-28 00:53:20,323 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-28 00:53:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-28 00:53:20,323 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-28 00:53:20,323 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-28 00:53:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-28 00:53:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-28 00:53:20,324 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-28 00:53:20,324 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-28 00:53:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-28 00:53:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-28 00:53:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-28 00:53:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-28 00:53:20,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-28 00:53:20,325 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-28 00:53:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-28 00:53:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-28 00:53:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-28 00:53:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 00:53:20,326 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-28 00:53:20,326 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-28 00:53:20,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 00:53:20,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 00:53:20,611 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 00:53:20,612 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 00:53:21,207 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 00:53:21,222 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 00:53:21,223 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 00:53:21,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:53:21 BoogieIcfgContainer [2021-12-28 00:53:21,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 00:53:21,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 00:53:21,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 00:53:21,232 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 00:53:21,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 12:53:19" (1/3) ... [2021-12-28 00:53:21,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c399f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:53:21, skipping insertion in model container [2021-12-28 00:53:21,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 12:53:20" (2/3) ... [2021-12-28 00:53:21,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c399f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 12:53:21, skipping insertion in model container [2021-12-28 00:53:21,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 12:53:21" (3/3) ... [2021-12-28 00:53:21,235 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product33.cil.c [2021-12-28 00:53:21,240 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 00:53:21,240 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 00:53:21,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 00:53:21,296 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 00:53:21,297 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 00:53:21,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 300 states have (on average 1.5) internal successors, (450), 304 states have internal predecessors, (450), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2021-12-28 00:53:21,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-28 00:53:21,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:21,342 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:21,343 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:21,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:21,348 INFO L85 PathProgramCache]: Analyzing trace with hash 827259601, now seen corresponding path program 1 times [2021-12-28 00:53:21,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:21,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688301173] [2021-12-28 00:53:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:21,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:53:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:53:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:53:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 00:53:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-28 00:53:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:53:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:53:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:53:21,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:53:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:53:21,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:53:21,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:21,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688301173] [2021-12-28 00:53:21,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688301173] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:53:21,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113006832] [2021-12-28 00:53:21,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:21,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:53:21,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:53:21,889 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 00:53:21,915 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 00:53:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:22,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 00:53:22,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:53:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:53:22,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:53:22,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113006832] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:22,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:53:22,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-28 00:53:22,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21126290] [2021-12-28 00:53:22,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:22,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 00:53:22,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 00:53:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:53:22,478 INFO L87 Difference]: Start difference. First operand has 389 states, 300 states have (on average 1.5) internal successors, (450), 304 states have internal predecessors, (450), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:22,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:22,546 INFO L93 Difference]: Finished difference Result 619 states and 898 transitions. [2021-12-28 00:53:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 00:53:22,548 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2021-12-28 00:53:22,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:22,562 INFO L225 Difference]: With dead ends: 619 [2021-12-28 00:53:22,562 INFO L226 Difference]: Without dead ends: 382 [2021-12-28 00:53:22,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:53:22,574 INFO L933 BasicCegarLoop]: 572 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, 572 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 00:53:22,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:53:22,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-12-28 00:53:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-12-28 00:53:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 294 states have (on average 1.4931972789115646) internal successors, (439), 297 states have internal predecessors, (439), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-28 00:53:22,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 564 transitions. [2021-12-28 00:53:22,673 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 564 transitions. Word has length 101 [2021-12-28 00:53:22,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:22,676 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 564 transitions. [2021-12-28 00:53:22,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 564 transitions. [2021-12-28 00:53:22,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-28 00:53:22,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:22,686 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:22,710 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 00:53:22,895 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 00:53:22,896 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:22,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:22,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1955888924, now seen corresponding path program 1 times [2021-12-28 00:53:22,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:22,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500453811] [2021-12-28 00:53:22,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:22,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:53:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:53:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:53:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-28 00:53:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-28 00:53:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:53:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:53:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:53:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:53:23,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:53:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 00:53:23,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:23,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500453811] [2021-12-28 00:53:23,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500453811] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:53:23,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341294316] [2021-12-28 00:53:23,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:23,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:53:23,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:53:23,111 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 00:53:23,113 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 00:53:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 00:53:23,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:53:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:53:23,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:53:23,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341294316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:23,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:53:23,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:53:23,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112650641] [2021-12-28 00:53:23,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:23,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:53:23,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:23,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:53:23,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:53:23,605 INFO L87 Difference]: Start difference. First operand 382 states and 564 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:23,652 INFO L93 Difference]: Finished difference Result 609 states and 879 transitions. [2021-12-28 00:53:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:53:23,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2021-12-28 00:53:23,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:23,659 INFO L225 Difference]: With dead ends: 609 [2021-12-28 00:53:23,659 INFO L226 Difference]: Without dead ends: 385 [2021-12-28 00:53:23,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 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 00:53:23,663 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1122 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 00:53:23,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1122 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:53:23,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-12-28 00:53:23,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2021-12-28 00:53:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 296 states have (on average 1.489864864864865) internal successors, (441), 299 states have internal predecessors, (441), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-28 00:53:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 566 transitions. [2021-12-28 00:53:23,692 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 566 transitions. Word has length 102 [2021-12-28 00:53:23,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:23,694 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 566 transitions. [2021-12-28 00:53:23,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 566 transitions. [2021-12-28 00:53:23,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-28 00:53:23,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:23,697 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:23,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 00:53:23,911 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 00:53:23,911 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:23,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:23,912 INFO L85 PathProgramCache]: Analyzing trace with hash -745029444, now seen corresponding path program 1 times [2021-12-28 00:53:23,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:23,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434242718] [2021-12-28 00:53:23,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:23,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:53:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:53:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:53:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 00:53:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:53:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:53:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:53:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:53:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:53:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:53:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:53:24,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:24,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434242718] [2021-12-28 00:53:24,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434242718] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:53:24,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684259699] [2021-12-28 00:53:24,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:24,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:53:24,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:53:24,078 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 00:53:24,118 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 00:53:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:53:24,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:53:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-28 00:53:24,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:53:24,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684259699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:24,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:53:24,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-28 00:53:24,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598134078] [2021-12-28 00:53:24,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:24,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 00:53:24,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:24,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 00:53:24,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:53:24,512 INFO L87 Difference]: Start difference. First operand 384 states and 566 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:24,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:24,539 INFO L93 Difference]: Finished difference Result 803 states and 1199 transitions. [2021-12-28 00:53:24,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 00:53:24,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2021-12-28 00:53:24,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:24,543 INFO L225 Difference]: With dead ends: 803 [2021-12-28 00:53:24,543 INFO L226 Difference]: Without dead ends: 446 [2021-12-28 00:53:24,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-28 00:53:24,545 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 115 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1096 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 00:53:24,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1096 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:53:24,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-12-28 00:53:24,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 438. [2021-12-28 00:53:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 339 states have (on average 1.5073746312684366) internal successors, (511), 342 states have internal predecessors, (511), 74 states have call successors, (74), 24 states have call predecessors, (74), 24 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-12-28 00:53:24,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 658 transitions. [2021-12-28 00:53:24,563 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 658 transitions. Word has length 111 [2021-12-28 00:53:24,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:24,563 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 658 transitions. [2021-12-28 00:53:24,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:24,564 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 658 transitions. [2021-12-28 00:53:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-28 00:53:24,566 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:24,566 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:24,593 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 00:53:24,779 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 00:53:24,780 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:24,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:24,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1339832561, now seen corresponding path program 1 times [2021-12-28 00:53:24,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:24,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782485422] [2021-12-28 00:53:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:24,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-28 00:53:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 00:53:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 00:53:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-28 00:53:24,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:53:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:53:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:53:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:53:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:53:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:53:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:24,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:53:24,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:24,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782485422] [2021-12-28 00:53:24,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782485422] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:53:24,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094420714] [2021-12-28 00:53:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:24,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:53:24,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:53:24,913 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 00:53:24,914 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 00:53:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 00:53:25,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:53:25,366 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 00:53:25,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:53:25,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094420714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:25,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:53:25,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-28 00:53:25,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060567589] [2021-12-28 00:53:25,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:25,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:53:25,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:25,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:53:25,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:53:25,368 INFO L87 Difference]: Start difference. First operand 438 states and 658 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:53:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:25,435 INFO L93 Difference]: Finished difference Result 867 states and 1306 transitions. [2021-12-28 00:53:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:53:25,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2021-12-28 00:53:25,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:25,439 INFO L225 Difference]: With dead ends: 867 [2021-12-28 00:53:25,439 INFO L226 Difference]: Without dead ends: 440 [2021-12-28 00:53:25,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 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 00:53:25,443 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 133 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2068 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 00:53:25,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 2068 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:53:25,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-12-28 00:53:25,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2021-12-28 00:53:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 340 states have (on average 1.5058823529411764) internal successors, (512), 344 states have internal predecessors, (512), 74 states have call successors, (74), 24 states have call predecessors, (74), 25 states have return successors, (75), 73 states have call predecessors, (75), 73 states have call successors, (75) [2021-12-28 00:53:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 661 transitions. [2021-12-28 00:53:25,462 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 661 transitions. Word has length 112 [2021-12-28 00:53:25,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:25,463 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 661 transitions. [2021-12-28 00:53:25,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:53:25,463 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 661 transitions. [2021-12-28 00:53:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 00:53:25,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:25,465 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:25,494 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 00:53:25,689 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 00:53:25,690 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:25,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:25,690 INFO L85 PathProgramCache]: Analyzing trace with hash -345346834, now seen corresponding path program 1 times [2021-12-28 00:53:25,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:25,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692400905] [2021-12-28 00:53:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:25,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-28 00:53:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 00:53:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-28 00:53:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:53:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:53:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:53:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:53:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:53:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-28 00:53:25,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:53:25,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:25,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692400905] [2021-12-28 00:53:25,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692400905] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:53:25,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274643184] [2021-12-28 00:53:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:25,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:53:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:53:25,848 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 00:53:25,850 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 00:53:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 00:53:26,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:53:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-28 00:53:26,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 00:53:26,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274643184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:26,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 00:53:26,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-28 00:53:26,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600430546] [2021-12-28 00:53:26,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:26,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 00:53:26,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:26,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 00:53:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:53:26,289 INFO L87 Difference]: Start difference. First operand 440 states and 661 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:53:26,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:26,353 INFO L93 Difference]: Finished difference Result 869 states and 1311 transitions. [2021-12-28 00:53:26,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 00:53:26,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2021-12-28 00:53:26,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:26,357 INFO L225 Difference]: With dead ends: 869 [2021-12-28 00:53:26,358 INFO L226 Difference]: Without dead ends: 442 [2021-12-28 00:53:26,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 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 00:53:26,360 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 132 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2057 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 00:53:26,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 2057 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 00:53:26,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-12-28 00:53:26,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-12-28 00:53:26,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 346 states have internal predecessors, (513), 74 states have call successors, (74), 24 states have call predecessors, (74), 26 states have return successors, (80), 73 states have call predecessors, (80), 73 states have call successors, (80) [2021-12-28 00:53:26,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 667 transitions. [2021-12-28 00:53:26,381 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 667 transitions. Word has length 113 [2021-12-28 00:53:26,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:26,381 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 667 transitions. [2021-12-28 00:53:26,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:53:26,382 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 667 transitions. [2021-12-28 00:53:26,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-28 00:53:26,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:26,384 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:26,412 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 00:53:26,599 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 00:53:26,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1612890018, now seen corresponding path program 1 times [2021-12-28 00:53:26,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:26,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541069514] [2021-12-28 00:53:26,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:26,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-28 00:53:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 00:53:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-28 00:53:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:53:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:53:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:53:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:53:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:53:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:53:26,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:26,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541069514] [2021-12-28 00:53:26,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541069514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:26,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:26,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:53:26,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692719130] [2021-12-28 00:53:26,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:26,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:53:26,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:26,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:53:26,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:53:26,724 INFO L87 Difference]: Start difference. First operand 442 states and 667 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:53:28,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:28,848 INFO L93 Difference]: Finished difference Result 1076 states and 1633 transitions. [2021-12-28 00:53:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:53:28,849 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2021-12-28 00:53:28,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:28,853 INFO L225 Difference]: With dead ends: 1076 [2021-12-28 00:53:28,853 INFO L226 Difference]: Without dead ends: 657 [2021-12-28 00:53:28,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-28 00:53:28,856 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 1475 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:28,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 1553 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-28 00:53:28,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-12-28 00:53:28,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 442. [2021-12-28 00:53:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 346 states have internal predecessors, (513), 74 states have call successors, (74), 24 states have call predecessors, (74), 26 states have return successors, (79), 73 states have call predecessors, (79), 73 states have call successors, (79) [2021-12-28 00:53:28,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 666 transitions. [2021-12-28 00:53:28,889 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 666 transitions. Word has length 114 [2021-12-28 00:53:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:28,890 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 666 transitions. [2021-12-28 00:53:28,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:53:28,890 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 666 transitions. [2021-12-28 00:53:28,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-28 00:53:28,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:28,892 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:28,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 00:53:28,893 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:28,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:28,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1193438081, now seen corresponding path program 2 times [2021-12-28 00:53:28,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:28,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449135271] [2021-12-28 00:53:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:28,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:28,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:28,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:28,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:28,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:28,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:28,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-28 00:53:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:28,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 00:53:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 00:53:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:28,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:53:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:29,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:53:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:29,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:53:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:29,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:53:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:53:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-28 00:53:29,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:29,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449135271] [2021-12-28 00:53:29,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449135271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:29,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:29,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 00:53:29,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445712086] [2021-12-28 00:53:29,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:29,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 00:53:29,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:29,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 00:53:29,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-28 00:53:29,013 INFO L87 Difference]: Start difference. First operand 442 states and 666 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:53:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:31,005 INFO L93 Difference]: Finished difference Result 1078 states and 1636 transitions. [2021-12-28 00:53:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 00:53:31,006 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2021-12-28 00:53:31,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:31,028 INFO L225 Difference]: With dead ends: 1078 [2021-12-28 00:53:31,029 INFO L226 Difference]: Without dead ends: 659 [2021-12-28 00:53:31,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 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 00:53:31,035 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 1457 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:31,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1474 Valid, 1546 Invalid, 3105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-28 00:53:31,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-28 00:53:31,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 444. [2021-12-28 00:53:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 348 states have internal predecessors, (514), 74 states have call successors, (74), 24 states have call predecessors, (74), 27 states have return successors, (81), 73 states have call predecessors, (81), 73 states have call successors, (81) [2021-12-28 00:53:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 669 transitions. [2021-12-28 00:53:31,074 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 669 transitions. Word has length 115 [2021-12-28 00:53:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:31,074 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 669 transitions. [2021-12-28 00:53:31,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-28 00:53:31,074 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 669 transitions. [2021-12-28 00:53:31,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-28 00:53:31,076 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:31,076 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:31,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 00:53:31,077 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:31,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:31,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1780926243, now seen corresponding path program 1 times [2021-12-28 00:53:31,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:31,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134772853] [2021-12-28 00:53:31,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:31,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:53:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-28 00:53:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:53:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:53:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:53:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:53:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:53:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:53:31,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:53:31,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:31,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134772853] [2021-12-28 00:53:31,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134772853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:31,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:31,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:53:31,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610790736] [2021-12-28 00:53:31,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:31,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:53:31,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:31,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:53:31,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:53:31,263 INFO L87 Difference]: Start difference. First operand 444 states and 669 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-28 00:53:34,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:34,083 INFO L93 Difference]: Finished difference Result 1076 states and 1631 transitions. [2021-12-28 00:53:34,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:53:34,083 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2021-12-28 00:53:34,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:34,088 INFO L225 Difference]: With dead ends: 1076 [2021-12-28 00:53:34,088 INFO L226 Difference]: Without dead ends: 659 [2021-12-28 00:53:34,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 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 00:53:34,090 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 1530 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 4570 mSolverCounterSat, 661 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 5231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 661 IncrementalHoareTripleChecker+Valid, 4570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:34,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 1881 Invalid, 5231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [661 Valid, 4570 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-28 00:53:34,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-12-28 00:53:34,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 444. [2021-12-28 00:53:34,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 348 states have internal predecessors, (514), 74 states have call successors, (74), 24 states have call predecessors, (74), 27 states have return successors, (80), 73 states have call predecessors, (80), 73 states have call successors, (80) [2021-12-28 00:53:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 668 transitions. [2021-12-28 00:53:34,123 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 668 transitions. Word has length 116 [2021-12-28 00:53:34,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:34,123 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 668 transitions. [2021-12-28 00:53:34,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-28 00:53:34,124 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 668 transitions. [2021-12-28 00:53:34,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-28 00:53:34,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:34,126 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:34,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 00:53:34,126 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:34,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:34,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1953819643, now seen corresponding path program 2 times [2021-12-28 00:53:34,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:34,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525233669] [2021-12-28 00:53:34,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:34,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:53:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-28 00:53:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:53:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:53:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:53:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:53:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:53:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:53:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:34,269 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-28 00:53:34,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:34,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525233669] [2021-12-28 00:53:34,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525233669] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:34,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:34,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 00:53:34,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753798005] [2021-12-28 00:53:34,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:34,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 00:53:34,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:34,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 00:53:34,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-28 00:53:34,271 INFO L87 Difference]: Start difference. First operand 444 states and 668 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-28 00:53:36,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:36,859 INFO L93 Difference]: Finished difference Result 1078 states and 1637 transitions. [2021-12-28 00:53:36,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 00:53:36,860 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2021-12-28 00:53:36,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:36,866 INFO L225 Difference]: With dead ends: 1078 [2021-12-28 00:53:36,866 INFO L226 Difference]: Without dead ends: 661 [2021-12-28 00:53:36,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 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 00:53:36,871 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 1623 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 4369 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 5042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 4369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:36,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1623 Valid, 1847 Invalid, 5042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 4369 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-28 00:53:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-12-28 00:53:36,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 446. [2021-12-28 00:53:36,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 343 states have (on average 1.501457725947522) internal successors, (515), 350 states have internal predecessors, (515), 74 states have call successors, (74), 24 states have call predecessors, (74), 28 states have return successors, (85), 73 states have call predecessors, (85), 73 states have call successors, (85) [2021-12-28 00:53:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 674 transitions. [2021-12-28 00:53:36,913 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 674 transitions. Word has length 117 [2021-12-28 00:53:36,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:36,915 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 674 transitions. [2021-12-28 00:53:36,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-28 00:53:36,915 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 674 transitions. [2021-12-28 00:53:36,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-28 00:53:36,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:36,918 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:36,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 00:53:36,918 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:36,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:36,918 INFO L85 PathProgramCache]: Analyzing trace with hash -310085064, now seen corresponding path program 1 times [2021-12-28 00:53:36,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:36,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477526022] [2021-12-28 00:53:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:36,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:36,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:36,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:53:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-28 00:53:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:53:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:53:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:53:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:53:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:53:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:53:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,052 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-28 00:53:37,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:37,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477526022] [2021-12-28 00:53:37,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477526022] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 00:53:37,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860159359] [2021-12-28 00:53:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:37,053 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:53:37,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 00:53:37,056 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 00:53:37,074 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 00:53:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:37,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 00:53:37,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 00:53:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:53:37,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 00:53:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:53:37,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860159359] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 00:53:37,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 00:53:37,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-28 00:53:37,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515690126] [2021-12-28 00:53:37,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 00:53:37,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 00:53:37,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 00:53:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-28 00:53:37,652 INFO L87 Difference]: Start difference. First operand 446 states and 674 transitions. Second operand has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-28 00:53:41,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:41,178 INFO L93 Difference]: Finished difference Result 1807 states and 2945 transitions. [2021-12-28 00:53:41,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 00:53:41,178 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 118 [2021-12-28 00:53:41,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:41,187 INFO L225 Difference]: With dead ends: 1807 [2021-12-28 00:53:41,187 INFO L226 Difference]: Without dead ends: 1392 [2021-12-28 00:53:41,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-28 00:53:41,192 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 3823 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 5507 mSolverCounterSat, 1554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3825 SdHoareTripleChecker+Valid, 3619 SdHoareTripleChecker+Invalid, 7061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1554 IncrementalHoareTripleChecker+Valid, 5507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:41,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3825 Valid, 3619 Invalid, 7061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1554 Valid, 5507 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-28 00:53:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-12-28 00:53:41,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 799. [2021-12-28 00:53:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 632 states have (on average 1.5601265822784811) internal successors, (986), 639 states have internal predecessors, (986), 138 states have call successors, (138), 24 states have call predecessors, (138), 28 states have return successors, (159), 137 states have call predecessors, (159), 137 states have call successors, (159) [2021-12-28 00:53:41,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1283 transitions. [2021-12-28 00:53:41,257 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1283 transitions. Word has length 118 [2021-12-28 00:53:41,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:41,258 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1283 transitions. [2021-12-28 00:53:41,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-28 00:53:41,258 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1283 transitions. [2021-12-28 00:53:41,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-28 00:53:41,268 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:41,268 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:41,288 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 00:53:41,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 00:53:41,480 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:41,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:41,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1558417906, now seen corresponding path program 1 times [2021-12-28 00:53:41,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:41,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382882347] [2021-12-28 00:53:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:41,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:53:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-28 00:53:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:53:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:53:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:53:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:53:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-28 00:53:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:53:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:41,622 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:53:41,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:41,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382882347] [2021-12-28 00:53:41,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382882347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:41,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:41,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:53:41,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140078906] [2021-12-28 00:53:41,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:41,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:53:41,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:41,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:53:41,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:53:41,625 INFO L87 Difference]: Start difference. First operand 799 states and 1283 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:43,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:43,085 INFO L93 Difference]: Finished difference Result 2068 states and 3388 transitions. [2021-12-28 00:53:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:53:43,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2021-12-28 00:53:43,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:43,093 INFO L225 Difference]: With dead ends: 2068 [2021-12-28 00:53:43,094 INFO L226 Difference]: Without dead ends: 1347 [2021-12-28 00:53:43,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 00:53:43,098 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 1446 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:43,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 1391 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 00:53:43,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2021-12-28 00:53:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1124. [2021-12-28 00:53:43,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 893 states have (on average 1.58006718924972) internal successors, (1411), 900 states have internal predecessors, (1411), 202 states have call successors, (202), 24 states have call predecessors, (202), 28 states have return successors, (233), 201 states have call predecessors, (233), 201 states have call successors, (233) [2021-12-28 00:53:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1846 transitions. [2021-12-28 00:53:43,200 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1846 transitions. Word has length 121 [2021-12-28 00:53:43,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:43,201 INFO L470 AbstractCegarLoop]: Abstraction has 1124 states and 1846 transitions. [2021-12-28 00:53:43,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:43,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1846 transitions. [2021-12-28 00:53:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-28 00:53:43,207 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:43,207 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:43,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 00:53:43,208 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:43,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:43,208 INFO L85 PathProgramCache]: Analyzing trace with hash -783601292, now seen corresponding path program 1 times [2021-12-28 00:53:43,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:43,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877074803] [2021-12-28 00:53:43,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:43,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:53:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 00:53:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:53:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 00:53:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:53:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:53:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-28 00:53:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:53:43,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:53:43,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:43,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877074803] [2021-12-28 00:53:43,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877074803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:43,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:43,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:53:43,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897189790] [2021-12-28 00:53:43,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:43,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:53:43,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:43,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:53:43,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:53:43,337 INFO L87 Difference]: Start difference. First operand 1124 states and 1846 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:44,795 INFO L93 Difference]: Finished difference Result 2873 states and 4772 transitions. [2021-12-28 00:53:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:53:44,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2021-12-28 00:53:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:44,806 INFO L225 Difference]: With dead ends: 2873 [2021-12-28 00:53:44,807 INFO L226 Difference]: Without dead ends: 1880 [2021-12-28 00:53:44,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 00:53:44,811 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1419 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:44,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1434 Valid, 1383 Invalid, 1936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 00:53:44,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-12-28 00:53:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1657. [2021-12-28 00:53:44,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1331 states have (on average 1.59053343350864) internal successors, (2117), 1338 states have internal predecessors, (2117), 297 states have call successors, (297), 24 states have call predecessors, (297), 28 states have return successors, (328), 296 states have call predecessors, (328), 296 states have call successors, (328) [2021-12-28 00:53:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2742 transitions. [2021-12-28 00:53:44,944 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2742 transitions. Word has length 122 [2021-12-28 00:53:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:44,944 INFO L470 AbstractCegarLoop]: Abstraction has 1657 states and 2742 transitions. [2021-12-28 00:53:44,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:44,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2742 transitions. [2021-12-28 00:53:44,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-28 00:53:44,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:44,952 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:44,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 00:53:44,953 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:44,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:44,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1220034332, now seen corresponding path program 1 times [2021-12-28 00:53:44,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:44,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700798585] [2021-12-28 00:53:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:44,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:44,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:45,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:53:45,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-28 00:53:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:53:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-28 00:53:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-28 00:53:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:53:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-28 00:53:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:53:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:45,045 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:53:45,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:45,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700798585] [2021-12-28 00:53:45,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700798585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:45,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:45,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:53:45,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338177718] [2021-12-28 00:53:45,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:45,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:53:45,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:45,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:53:45,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:53:45,047 INFO L87 Difference]: Start difference. First operand 1657 states and 2742 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:46,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:46,456 INFO L93 Difference]: Finished difference Result 4080 states and 6858 transitions. [2021-12-28 00:53:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:53:46,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2021-12-28 00:53:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:46,474 INFO L225 Difference]: With dead ends: 4080 [2021-12-28 00:53:46,474 INFO L226 Difference]: Without dead ends: 2689 [2021-12-28 00:53:46,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 00:53:46,479 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1428 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:46,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1443 Valid, 1376 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 00:53:46,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2021-12-28 00:53:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2466. [2021-12-28 00:53:46,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2017 states have (on average 1.5984134853743184) internal successors, (3224), 2024 states have internal predecessors, (3224), 420 states have call successors, (420), 24 states have call predecessors, (420), 28 states have return successors, (467), 419 states have call predecessors, (467), 419 states have call successors, (467) [2021-12-28 00:53:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4111 transitions. [2021-12-28 00:53:46,667 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4111 transitions. Word has length 123 [2021-12-28 00:53:46,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:46,669 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4111 transitions. [2021-12-28 00:53:46,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:46,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4111 transitions. [2021-12-28 00:53:46,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-28 00:53:46,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:46,681 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:46,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 00:53:46,682 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:46,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash 776702101, now seen corresponding path program 1 times [2021-12-28 00:53:46,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:46,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667343057] [2021-12-28 00:53:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:46,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:53:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-28 00:53:46,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:53:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-28 00:53:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-28 00:53:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:53:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-28 00:53:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-28 00:53:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:53:46,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:46,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667343057] [2021-12-28 00:53:46,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667343057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:46,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:46,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:53:46,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150741496] [2021-12-28 00:53:46,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:46,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:53:46,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:53:46,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:53:46,792 INFO L87 Difference]: Start difference. First operand 2466 states and 4111 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:48,317 INFO L93 Difference]: Finished difference Result 5964 states and 10118 transitions. [2021-12-28 00:53:48,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:53:48,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2021-12-28 00:53:48,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:48,338 INFO L225 Difference]: With dead ends: 5964 [2021-12-28 00:53:48,339 INFO L226 Difference]: Without dead ends: 3983 [2021-12-28 00:53:48,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 00:53:48,346 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1408 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1290 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:48,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 1380 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 1290 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 00:53:48,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2021-12-28 00:53:48,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3760. [2021-12-28 00:53:48,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3132 states have (on average 1.603448275862069) internal successors, (5022), 3139 states have internal predecessors, (5022), 599 states have call successors, (599), 24 states have call predecessors, (599), 28 states have return successors, (672), 598 states have call predecessors, (672), 598 states have call successors, (672) [2021-12-28 00:53:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 6293 transitions. [2021-12-28 00:53:48,618 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 6293 transitions. Word has length 124 [2021-12-28 00:53:48,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:48,619 INFO L470 AbstractCegarLoop]: Abstraction has 3760 states and 6293 transitions. [2021-12-28 00:53:48,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 6293 transitions. [2021-12-28 00:53:48,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-28 00:53:48,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:48,631 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:48,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 00:53:48,632 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:48,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1859394648, now seen corresponding path program 1 times [2021-12-28 00:53:48,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:48,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290345285] [2021-12-28 00:53:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:48,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:48,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:53:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 00:53:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:53:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 00:53:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-28 00:53:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 00:53:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 00:53:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-28 00:53:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:53:48,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:48,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290345285] [2021-12-28 00:53:48,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290345285] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:48,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:48,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:53:48,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892227211] [2021-12-28 00:53:48,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:48,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:53:48,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:48,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:53:48,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:53:48,748 INFO L87 Difference]: Start difference. First operand 3760 states and 6293 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:50,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:50,395 INFO L93 Difference]: Finished difference Result 9067 states and 15482 transitions. [2021-12-28 00:53:50,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:53:50,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2021-12-28 00:53:50,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:50,423 INFO L225 Difference]: With dead ends: 9067 [2021-12-28 00:53:50,423 INFO L226 Difference]: Without dead ends: 6124 [2021-12-28 00:53:50,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 00:53:50,432 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1407 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 1956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:50,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1422 Valid, 1416 Invalid, 1956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 00:53:50,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2021-12-28 00:53:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 5901. [2021-12-28 00:53:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5901 states, 4897 states have (on average 1.5985297120686135) internal successors, (7828), 4904 states have internal predecessors, (7828), 975 states have call successors, (975), 24 states have call predecessors, (975), 28 states have return successors, (1092), 974 states have call predecessors, (1092), 974 states have call successors, (1092) [2021-12-28 00:53:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5901 states to 5901 states and 9895 transitions. [2021-12-28 00:53:50,883 INFO L78 Accepts]: Start accepts. Automaton has 5901 states and 9895 transitions. Word has length 125 [2021-12-28 00:53:50,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:50,883 INFO L470 AbstractCegarLoop]: Abstraction has 5901 states and 9895 transitions. [2021-12-28 00:53:50,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:50,884 INFO L276 IsEmpty]: Start isEmpty. Operand 5901 states and 9895 transitions. [2021-12-28 00:53:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-28 00:53:50,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:50,900 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:50,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 00:53:50,901 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash 433004377, now seen corresponding path program 1 times [2021-12-28 00:53:50,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:50,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818295761] [2021-12-28 00:53:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:50,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:53:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-28 00:53:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-28 00:53:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-28 00:53:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-28 00:53:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-28 00:53:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-28 00:53:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-28 00:53:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:53:50,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:50,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818295761] [2021-12-28 00:53:50,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818295761] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:50,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:50,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:53:50,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214206053] [2021-12-28 00:53:50,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:51,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:53:51,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:51,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:53:51,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:53:51,000 INFO L87 Difference]: Start difference. First operand 5901 states and 9895 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:52,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:52,889 INFO L93 Difference]: Finished difference Result 14684 states and 25095 transitions. [2021-12-28 00:53:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:53:52,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2021-12-28 00:53:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:52,929 INFO L225 Difference]: With dead ends: 14684 [2021-12-28 00:53:52,929 INFO L226 Difference]: Without dead ends: 10002 [2021-12-28 00:53:52,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 00:53:52,944 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 1573 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:52,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 1360 Invalid, 1887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 00:53:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10002 states. [2021-12-28 00:53:53,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10002 to 9779. [2021-12-28 00:53:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9779 states, 8169 states have (on average 1.5971355123026074) internal successors, (13047), 8176 states have internal predecessors, (13047), 1581 states have call successors, (1581), 24 states have call predecessors, (1581), 28 states have return successors, (1776), 1580 states have call predecessors, (1776), 1580 states have call successors, (1776) [2021-12-28 00:53:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9779 states to 9779 states and 16404 transitions. [2021-12-28 00:53:53,630 INFO L78 Accepts]: Start accepts. Automaton has 9779 states and 16404 transitions. Word has length 126 [2021-12-28 00:53:53,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:53,631 INFO L470 AbstractCegarLoop]: Abstraction has 9779 states and 16404 transitions. [2021-12-28 00:53:53,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:53,631 INFO L276 IsEmpty]: Start isEmpty. Operand 9779 states and 16404 transitions. [2021-12-28 00:53:53,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-28 00:53:53,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:53,653 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:53,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 00:53:53,653 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:53,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:53,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1929234490, now seen corresponding path program 1 times [2021-12-28 00:53:53,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:53,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148278181] [2021-12-28 00:53:53,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:53,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:53:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 00:53:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-28 00:53:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-28 00:53:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-28 00:53:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-28 00:53:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-28 00:53:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 00:53:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:53:53,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:53,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148278181] [2021-12-28 00:53:53,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148278181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:53,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:53,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:53:53,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969167870] [2021-12-28 00:53:53,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:53,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:53:53,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:53,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:53:53,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:53:53,752 INFO L87 Difference]: Start difference. First operand 9779 states and 16404 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:55,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:55,902 INFO L93 Difference]: Finished difference Result 25393 states and 43376 transitions. [2021-12-28 00:53:55,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:53:55,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2021-12-28 00:53:55,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:55,962 INFO L225 Difference]: With dead ends: 25393 [2021-12-28 00:53:55,963 INFO L226 Difference]: Without dead ends: 17315 [2021-12-28 00:53:55,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 00:53:55,988 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 1426 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:55,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1441 Valid, 1433 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 00:53:56,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17315 states. [2021-12-28 00:53:56,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17315 to 17092. [2021-12-28 00:53:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17092 states, 14279 states have (on average 1.5892569507668604) internal successors, (22693), 14286 states have internal predecessors, (22693), 2784 states have call successors, (2784), 24 states have call predecessors, (2784), 28 states have return successors, (3123), 2783 states have call predecessors, (3123), 2783 states have call successors, (3123) [2021-12-28 00:53:56,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17092 states to 17092 states and 28600 transitions. [2021-12-28 00:53:56,909 INFO L78 Accepts]: Start accepts. Automaton has 17092 states and 28600 transitions. Word has length 127 [2021-12-28 00:53:56,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:53:56,909 INFO L470 AbstractCegarLoop]: Abstraction has 17092 states and 28600 transitions. [2021-12-28 00:53:56,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 17092 states and 28600 transitions. [2021-12-28 00:53:56,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-28 00:53:56,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:53:56,935 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:53:56,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 00:53:56,935 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:53:56,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:53:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash -709818470, now seen corresponding path program 1 times [2021-12-28 00:53:56,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:53:56,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356582271] [2021-12-28 00:53:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:53:56,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:53:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:56,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:53:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:56,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:53:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:53:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:53:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:56,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:53:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:53:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-28 00:53:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-28 00:53:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 00:53:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:57,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-28 00:53:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:57,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 00:53:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-28 00:53:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:57,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-28 00:53:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:53:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:53:57,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:53:57,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356582271] [2021-12-28 00:53:57,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356582271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:53:57,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:53:57,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:53:57,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902801903] [2021-12-28 00:53:57,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:53:57,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:53:57,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:53:57,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:53:57,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:53:57,027 INFO L87 Difference]: Start difference. First operand 17092 states and 28600 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:53:59,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:53:59,674 INFO L93 Difference]: Finished difference Result 45369 states and 77389 transitions. [2021-12-28 00:53:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:53:59,675 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2021-12-28 00:53:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:53:59,816 INFO L225 Difference]: With dead ends: 45369 [2021-12-28 00:53:59,817 INFO L226 Difference]: Without dead ends: 30655 [2021-12-28 00:53:59,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 00:53:59,860 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 1436 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 1931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 00:53:59,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 1370 Invalid, 1931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 00:53:59,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30655 states. [2021-12-28 00:54:01,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30655 to 30432. [2021-12-28 00:54:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30432 states, 25580 states have (on average 1.585457388584832) internal successors, (40556), 25587 states have internal predecessors, (40556), 4823 states have call successors, (4823), 24 states have call predecessors, (4823), 28 states have return successors, (5436), 4822 states have call predecessors, (5436), 4822 states have call successors, (5436) [2021-12-28 00:54:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30432 states to 30432 states and 50815 transitions. [2021-12-28 00:54:01,962 INFO L78 Accepts]: Start accepts. Automaton has 30432 states and 50815 transitions. Word has length 128 [2021-12-28 00:54:01,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:54:01,963 INFO L470 AbstractCegarLoop]: Abstraction has 30432 states and 50815 transitions. [2021-12-28 00:54:01,963 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:54:01,963 INFO L276 IsEmpty]: Start isEmpty. Operand 30432 states and 50815 transitions. [2021-12-28 00:54:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-28 00:54:01,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:54:01,992 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:54:01,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 00:54:01,992 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:54:01,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:54:01,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1274785960, now seen corresponding path program 1 times [2021-12-28 00:54:01,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:54:01,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906633462] [2021-12-28 00:54:01,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:54:01,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:54:02,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:54:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:54:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:54:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:54:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:54:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:54:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-28 00:54:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-28 00:54:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-28 00:54:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-28 00:54:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-28 00:54:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-28 00:54:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 00:54:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:54:02,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:54:02,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906633462] [2021-12-28 00:54:02,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906633462] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:54:02,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:54:02,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:54:02,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169237657] [2021-12-28 00:54:02,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:54:02,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:54:02,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:54:02,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:54:02,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:54:02,120 INFO L87 Difference]: Start difference. First operand 30432 states and 50815 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:54:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 00:54:05,872 INFO L93 Difference]: Finished difference Result 83106 states and 140913 transitions. [2021-12-28 00:54:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 00:54:05,873 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2021-12-28 00:54:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 00:54:06,122 INFO L225 Difference]: With dead ends: 83106 [2021-12-28 00:54:06,122 INFO L226 Difference]: Without dead ends: 55864 [2021-12-28 00:54:06,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 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 00:54:06,211 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 1499 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1248 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 1248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-28 00:54:06,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1514 Valid, 1345 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 1248 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-28 00:54:06,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55864 states. [2021-12-28 00:54:09,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55864 to 55641. [2021-12-28 00:54:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55641 states, 47074 states have (on average 1.5802141309427709) internal successors, (74387), 47081 states have internal predecessors, (74387), 8538 states have call successors, (8538), 24 states have call predecessors, (8538), 28 states have return successors, (9683), 8537 states have call predecessors, (9683), 8537 states have call successors, (9683) [2021-12-28 00:54:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55641 states to 55641 states and 92608 transitions. [2021-12-28 00:54:09,559 INFO L78 Accepts]: Start accepts. Automaton has 55641 states and 92608 transitions. Word has length 129 [2021-12-28 00:54:09,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 00:54:09,560 INFO L470 AbstractCegarLoop]: Abstraction has 55641 states and 92608 transitions. [2021-12-28 00:54:09,560 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-28 00:54:09,560 INFO L276 IsEmpty]: Start isEmpty. Operand 55641 states and 92608 transitions. [2021-12-28 00:54:09,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-28 00:54:09,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 00:54:09,592 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 00:54:09,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 00:54:09,592 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 00:54:09,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 00:54:09,593 INFO L85 PathProgramCache]: Analyzing trace with hash -543713350, now seen corresponding path program 1 times [2021-12-28 00:54:09,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 00:54:09,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636381400] [2021-12-28 00:54:09,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 00:54:09,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 00:54:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 00:54:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 00:54:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 00:54:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-28 00:54:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-28 00:54:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-28 00:54:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-28 00:54:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-28 00:54:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-28 00:54:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-28 00:54:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-28 00:54:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-28 00:54:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-28 00:54:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 00:54:09,692 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-28 00:54:09,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 00:54:09,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636381400] [2021-12-28 00:54:09,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636381400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 00:54:09,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 00:54:09,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 00:54:09,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220539273] [2021-12-28 00:54:09,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 00:54:09,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 00:54:09,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 00:54:09,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 00:54:09,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 00:54:09,694 INFO L87 Difference]: Start difference. First operand 55641 states and 92608 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, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13)